A NEW TREATISE OF Natural Philosophy Free'd from the INTRICACIES OF THE SCHOOLS Adorned with many Curious Experiments both Medicinal and Chymical AS ALSO With Several Observations useful for the Health of the Body LONDON Printed by R. E. for J. Hindmarsh at the Golden-Ball over against the Royal. Exchange in Cornhill 1687. LICENSED October 28. 1686. ROBERT MIDGLEY INDEX THe First Part of Physick wherein is treated of the Causes and Principles of Nature CHAP. I. Of the Efficient Cause and of its Essence and Differences CHAP. II. Of the First Cause CHAP. III. The Perfections of the First Cause CHAP. IV. Of Second Causes and their Actions CHAP. V. Of Accidental Causes CHAP. VI. Of Sympathy Antipathy and the Effects depending thereupon CHAP. VII Experiments about Iron and the Loadstone CHAP. VIII An Explication of many other Effects which are commonly attributed to Sympathy CHAP. IX Of Portative Remedies commonly called Amulets of Quick-Silver Gold Silver and Copper CHAP. X. Of Natural Phoenomenas which are attributed to Antipathy CHAP. XI Of Emeticks Sudorificks and Specificks CHAP. XII Of Poysons and Toxicks CHAP. XIII Of Sublimate Arsenick and other kinds of Poysons and their deadly Effects CHAP. XIV Of Antidotes CHAP. XV. Of the true Causes of our Diseases CHAP. XVI Of the Causes of our Health CHAP. XVII Of Formal Exemplary and Material Causes CHAP. XVIII Of the First Matter CHAP. XIX Of Atoms and their Nature CHAP. XX. The Properties Magnitude Figure Weight and Motion of Atoms CHAP. XXI The Difficulties arising from the Doctrine of Atoms CHAP. XXII Of a Disseminate Congregate and Separate Vacuum according to Gassendus CHAP. XXIII Of a Congregate Vacuum against Aristotle and Cartesius The Second Part of Physick wherein is treated of the Coelestial World and of those things which are above Man. CHAP. I. Of the immense Spaces which are without the Heavens CHAP. II. Of the Heavens and their Nature CHAP. III. Of Stars and their Substance CHAP. IV. Of the Figures and Magnitude of Stars CHAP. V. Of the Motion of the Stars CHAP. VI. The System of the World according to Ptolomy Examined CHAP. VII The System of the World according to Copernicus Examined CHAP. VIII Of the Motion of the Earth CHAP. IX Of the Sun the true Centre and Heart of the World. CHAP. X. Of the Moon and its Changes CHAP. XI Of Planets Comets and the Fixed Stars CHAP. XII Of Meteors in the Air. CHAP. XIII Of Winds Tempests and Whirl-winds CHAP. XIV Of Thunder Lightning and the Thunderbolt CHAP. XV. Of Aurum-Fulminans which imitates Thunder CHAP. XVI Of Hail Snow Frost c. CHAP. XVII Of the Rainbow Halones and Parrhelis CHAP. XVIII Of the Air its Substance and Qualities The Third Part of Physick of those things which are beneath Man viz. of the Earth and Terrestrial Things which are called Inanimate CHAP. I. Of the Earth and Water in General CHAP. II. Of Terrestrial Inanimate Bodies in General CHAP. III. Of the various Qualities observed in Compound Bodies CHAP. IV. Of Special Qualities which arise from the Composition of Bodies CHAP. V. Of the Quantity Weight and Figure of Compound Bodies CHAP. VI. The Difference betwixt Natural Artificial and Compound Bodies CHAP. VII Of Mettals and their Formation CHAP. VIII Of Gold the King of Mettals CHAP. IX Of Silver Copper and other imperfect Mettals CHAP. X. Of Lead Tin and Iron CHAP. XI Of Quick-Silver Arbor Diana or the Silver Tree CHAP. XII Of Minerals CHAP. XIII Of Salts CHAP. XIV Of Subterranean Fires aend Earthquakes CHAP. XV. Of Waters and their Differences CHAP. XVI Of the Sea its Ebbing and Flowing and of the Saltness of the Sea-Water CHAP. XVII Of Springs and Rivers The Fourth Part of Physick Of those things which are in Man and of Man himself as he is a Compound Physical and Animate Body CHAP. I. Of Life in General CHAP. II. Of the difference of Lives CHAP. III. Of the Vegetative Life common to Man and Plants CHAP. IV. Of the Nature of Seeds and their Propagation CHAP. V. Of Nutrition which is common to Plants and Brutes as well as Man. CHAP. VI. How and with what Food an Embryo is nourished in the Womb 'till the time of its Nativity CHAP. VII How a Man is nourished after he is Born. CHAP. VIII The Sensitive Life of Man and other Animals CHAP. IX Of Seeing its Organ and Object viz. Light. CHAP. X. How illustrated Objects are visible CHAP. XI Of Hearing its Organ and Object CHAP. XII Particular Questions about Hearing CHAP. XIII Smelling its Organ and Object CHAP. XIV Of Tast and its Object CHAP. XV. Of Feeling CHAP. XVI Of Speech the Pulse and Breathing of Man. CHAP. XVII Of the Motion of the Heart CHAP. XVIII Of the irregular motion of the Heart in Animals and in Feavers CHAP. XIX Of the Circulation of the Blood. CHAP. XX. Of the inward Senses and the inferiour Appetite CHAP. XXI Of Sleep want of Rest and Death CHAP. XXII Of the Death of Brutes Plants and Mettals CHAP. XXIII Of the Rational Soul and its Powers NATURAL PHILOSOPHY OR Natural Science FREED FROM The Intricacies of the Schools THE desire of Knowledge is natural to Man Curiosity is inseparable from his Spirit neither is he ever at rest until he hath attained to the perfect knowledge of things that is until he becomes a Wise Man. Science is the Knowledge of things by their Causes therefore there is no Man Wise who is ignorant of the Original Principles and Causes of all things occurring to him and since it is impossible for any Man in this Life to attain to a clear distinct and an undubitable knowledge of all things therefore there is no Man that is absolutely Wise Those who have the Reputation of being Wise and Excellent Philosophers have obtained that preheminence in regard they are less ignorant than others Sciences differ according to the diversity of Mens Conditions and Professions The Noble Man is conversant and wise in the Art of War the Physitian in the Precepts of Medicine and the Advocate in matters of Law and Right but all these Sciences nay Theology it self cannot subsist without Philosophy especially without that part of it which we call Physick or natural Science The First Part of Physick wherein is Treated of the Causes and Principles of Nature BY Nature is understood the Universe composed of Heaven and Earth and all that is found between both this is the Object of Physick this every natural Philosopher ought to know and because this Knowledge cannot be obtained without knowing the principles and causes of things hence it is evident that a Natural Philosopher ought to use his utmost endeavour to enquire into the principles and causes of Nature and of all things which happen in this World. I shall not examine here whether there be any difference betwixt a Cause and a Principle for every principle after its manner I conceive to be a cause of that thing whereof it is the principle and no Man
That is the First matter out of which all bodies are composed and into which by an Universal Division they may be reduced the Second is nothing else but Bodies made of the first and upon which the efficient Causes do exercise their activities Therefore it is apparent That there is nothing in the World but what is a Compound and that there is no Compound without matter It is also certain That there is nothing made without an Efficient Cause which acts upon Compounds and destroys them that of them others may be made because the matter of the first serves for the composition of the second the Matter which goes to the composition of the first and second is the first Matter or Material Cause of the Compound and that Matter which serves the Efficient Cause for a Subject and Patient is called the Second Matter Both of them may be an efficient cause for Compounds do act upon one another as the Elements which drive one another backwards and forwards that which drives another is called the Agent as that which is driven is called the Patient and if there be any thing which resists it and drives back another this regress of the motion is called a reaction so one and the same thing may be the Subject and cause of Motion and that to give and receive being the Principle of Agent and Patient may Be at the same time but in divers respects CHAP. XVIII Of the first Matter ALL Philosophers do unanimously agree That there is a first Matter in the World which was produced from the beginning and tho' it can never be altered by any Change yet it is to be seen in all the Generations and Corruptions which are in Nature this doth suppose that the first Matter did exist before the Generation of the Compound wherein it is found and that it still remains and survives the Corruption of it as fire is made of Chips the Matter of the Fire was in the Chips and it is found partly in the Fire partly in the Smoak and partly also in the Ashes It is agreed by all Men That nothing is made out of nothing and that there is nothing in Nature which can be reduced into nothing so that the first remains one and the same in all the Revolutions which do happen Therefore in respect of Matter we may justly say that there is nothing new in the World since the Creation of it and that this Matter in its Nature is incorruptible so that to explain the Essence of this first Matter is all and the one only difficulty If we hearken to Aristotle he makes It the Subject of all Forms and that It is nothing but a passive Power or a meer Capacity of producing and receiving them in its Bosom He says in another place that Matter in it self hath neither quality nor quantity nor any Essence beside that which it received from that Form which perfected it But this explication gives us no Idea of Matter neither doth it teach us any thing of the nature of it on the other hand according to this Doctrine we may say that Matter is something and we may say at the same time that it is nothing and that it gives that Being to Form and receives the same from it and lastly that it hath distinct parts without any quantity which seems to be impossible They were more in the right who said That the first Matter was nothing else but the first Elements into which Compounds by a total dissolution are reduced also these Elements ought to be simple and indivisible for otherwise the first Elements are not such as we suppose them to be It follows from this Doctrine that neither Water nor Air nor Earth nor Fire are the first Elements of things because they are Compounds Therefore we must look out for other Elements which are simple and indivisible those things which the Chymists would fain establish that is Salt Sulphur and Mercury cannot be taken for the First Elements of Bodies since they are but Compounds of many other Bodies I am of the same Opinion concerning Descartes his three Elements which he would have to be the principles of things which is impossible because they are divisible Therefore we must acknowledge that only simple and indivisible Atoms are the first Matter and first Principles and Elements whereof Bodies are composed Out of these Atoms are Corpuscles made out of these Corpuscles small Masses out of Masses greater parts then of these parts greater Bodies whereof the Universe doth consist In the same manner going backward in an analytical method the World is divided into great Bodies those into parts parts into small Masses Masses into Corpuscles and lastly these Corpuscles are divided into Atoms CHAP. XIX Of Atoms and their Nature THat we may solidly evince the existency of Atoms we must suppose that every compound may be divided into so many parts as there are which make the compound Therefore division ought necessarily to cease when there is a failure of parts to be divided on the other side there is no end of it as long as there are Particles to be divided one of the two we must allow that is either that a body cannot be so exactly divided but that there always remain divisible parts in infinitum or that there are parts after a certain number of Divisions which will not admit any further division Aristotle stands for the former but Gassendus and the Ancient Philosophers do defend the latter and according to this last Doctrine after all the Divisions are made nothing can remain besides Atoms that is indivisible Beings which are the first Elements of Natural Bodies I confess it is hard to imagin a corporeal thing to be indivisible because we see nothing in this World which is not divisible but this makes nothing against Atoms which are Corporeal because they compose Bodies and are Indivisible because they are the first and most simple Elements of Bodies Hence arises another difficulty because it cannot be easily explained after what manner a thing that is divisible is composed of parts which are indivisible Impartial minds do not find so much difficulty in conceiving this matter as those do who follow the prejudices which they have received First these Men who are thus so prepossessed do not consider that there are many things which escape our Senses and yet are most real Secondly they do not consider that that which composes a Body is not a compound as we see that Unity makes number tho' it self be not a number Letters whereof Nouns and words are framed yet are neither the one nor the other The drops of Water whereof Rivers do consist are not Rivers so Atoms though they are invisible and indivisible yet they compose Bodies which are visible and divisible Aristotle and his Followers do teach us That a small body as for Example a Millet Seed is divisible in infinitum and that it contains an infinite number of Parts which being supposed
as the Air in the Vial is condensed and gives way From this Experiment I conclude two things in defence of a Vacuum Whereof the first is That the air is before rarified in the Vial and that the parts of it are more dilated But this rarefaction of the air cannot be done but by the help of the great and more copious Vacuums The other is That the Water could not ascend in the Vial unless the air did give way and was condensed But air cannot be condensed unless the parts of it close nearer together and that they could not do without a Vacuum therefore we must conclude that air is condensed by the help of Vacuums which are partly taken away and lessened as well in Quality as in Number as it happens in a Bushel full of Corn or Salt when it is moved by which motion it is not a little condensed and the Atoms of Fire beget a dilating Motion to the air in the Glass but Cold produces a condensing Motion and as it is condensed and becomes more gross the aiery Atoms do also draw the Water as it were with small hooks or the external air lying upon the Water makes it ascend by Reason of the Vacuum which gives place or at least does not resist the weight of the Air. But perhaps they will say that there is no Vacuum in the air but that many Particles of subtile matter do go out from the Vial and give place to the ascending Water But this answer gives no manner of satisfaction because there is no body to force this subtile Matter neither is there any way through which it may pass as also there is no Cause assigned why the Water is forced upwards As to this we must have recourse to the small empty spaces which are found in all Bodies which Bodies are more or less fluid or solid as they have more or less of Matter or Renitency as there is the greater or lesser number of those Vacuums whereof we speak dispersed through them CHAP. XXIII Of a Congregate Vacuum against Aristotle and Cartesius GASSENDUS is not only against these two Philosophers concerning a Dispersed Vacuum but also about a Congregate one which is very remarkable and is to be found about divers Compound Bodies Aristotle who fights for Quality or Accidents distinct from Substance rejects a Vacuum as a thing which Nature can no ways endure But Cartesius speaks yet more hardly of it for he affirms that the Production of it in the World does not only exceed the power of Second Causes but even of the First Cause it self Aristotle endeavours to prove his Doctrine after this manner to wit That in his Opinion a Vacuum would interrupt and hinder the Motion and Action of Natural Causes For if indeed Light and Heat be Accidents the Sun could not produce either of them in a Vacuum or through it though there was never so little of it in the Air equal to the least imaginable point for according to this Opinion they are Accidents and have need of a Subject which a Vacuum does not afford them Descartes Builds upon another Foundation for he acknowledges no difference between Extention and Matter extended and therefore he affirms that there is no distance between two Walls betwixt which there is no air nor Matter but that they would fall close together Which how ridiculous it is we shall see by what follows I affirm therefore That Nature doth not abhor a Vacuum nor that it is impossible that there should be a Vacuum in Nature for indeed there is no ground for this imaginary fear and the Experiment which I bring will most solidly demonstrate the Existence of a Vacuum This Experiment was made at Clermont by the late Mr. Paschall a Man well esteemed by all that knew him he took a Glass Tube four Foot long divided into Inches and Lines open at one end only through which being filled with Quick-Silver and then put into an Earthen Vessel full of Water and Quick-Silver immediately the Quick-Silver that was in the Tube did descend and stuck at the height of Twenty five Inches and Five Lines and a half and remained visibly in that State for the space of Five Hours This Experiment was afterwards made in several places two or three times I and several persons of Quality and Learning being present and indeed every time it did more or less sink down according to the highness or lowness of the place where the Experiment was made without any visible alteration in one and the same place I conclude that the space which remains above the Quick-silver is a Vacuum and that nothing but Light is contained within it we must therefore say either that Light is not an accident but a body which fills the space or else that this space is a Vacuum and that Light is in it without its subject It may be said that the Glass being porous the Air or some other Body more subtile might enter into the Tube and replenish the space left by the descending Quick-silver but that cannot be because the Quick-silver descends on a sudden and the Air could not so suddenly enter in without breaking of the Glass But if it did enter why does not the Quick-silver descend to the very bottom but remain suspended at a Certain height From this Experiment it appears That a Vacuum according to the conception which Aristotle hath left us of it is not impossible to be in Nature Secondly that the external Air by its weight presses upon the Water and Quick-silver in the Earthen Vessel for otherwise all the Quick-silver contained in the Tube would fall down to the very bottom Thirdly that the same Air hath a greater pressure in Vallies than in Mountains especially upon those that are very high because here it is more subtile and rare and more dilated by disseminated Vacuums whereby its weight is lessened together with its strength and resistency The Opinion of Cartesius is yet more ridiculous who affirms That a Vacuum is impossible even in respect of the Divine Power which Opinion is no less impious than it is rash for no Man can deny but that God is able to reduce into nothing the Air that is contained in the Vial and also to hinder any other body from coming into its place Descartes says that this Hypothesis is impossible and that if this Air was annihilated the sides of the Viol would immediately touch one another because says he things betwixt which nothing interposes do touch one another That is true that when nothing was there nothing could be there or when things come together to be joined But we suppose here that the parts of the Vial remain in their first State as indeed they do if they are not any ways moved which they do not God Almighty hindring and whosoever denys that God Almighty is able to hinder this Motion and this Contiguity in so supposing is ridiculous and rash prescribing Limits to God Almighty's Power There is
and the three others much greater although according to their Opinion the Diameter of the Earth is three thousand five hundred Miles but its circumference seven thousand Miles including the water which together with the Earth make up one Globe Comets according to Aristotle are Planets or Stars produced De Novo from Exhalations By which saying this Philosopher is compelled to place all Comets under the Moon which is found to be an Error by the experience of a great many Comets which have appeared above the Moon and the Sun too whither Exhalations from the Earth can never reach All the time of their continuance they have a regular motion for the explication of which Aristotle could never assign them an Intelligence to guide them Seneca the Antients and Copernicus teach that Comets have been produced from the beginning of the World and the reason why we do not see them so often as we do the Planets is because they are elevated too high above us and since they have an excentrick motion according to this Opinion they sometimes and for some continnuance of time appear that is to say then when they descend into the Heaven of the Planets But all these Opinions are very uncertain This is my Opinion that if the Sun is Gold melted in the Cupel as I really believe and that from thence Fumes and Vapours arise it is no hard matter to conceive that in the Solar Vortex and in the Corpuscles exhaling from the Sun a great part of them are very gross thick and inflammable which taking Fire make these Comets we speak of whose motion is regularly directed by the Vortex of the Sun yet nevertheless this does not hinder but that some Comets may be generated nearer us from Terrestrial Exhalation The fixed Stars are fastned to the Firmament as so many little Suns they are as immoveable as the Heaven in which they are included nevertheless like the Sun they move about their Centres although this motion be neither useful profitable nor necessary And so nothing compels us to say that they are actually moved They are all said to be bigger than the Earth and to be in number 1022 the Heaven in which they are is said to be solid clear and transparent like Ice and this is that Heaven which was made in the midst of the Waters and which any one may represent to himself like a great Circle of Water congealed in the form of Chrystal But according to my foregoing Hypotehsis I had rather say that the fix'd Stars are like so many round holes or Rings furnished with so many large Diamonds or Carbuncles which serve as a Medium or Vehicle to the light and heat of the Empyrial Heaven as we have said already CHAP. XII Of Meteors in the Air. ARISTOTLE hath constituted two sorts of Bodies to wit Simple and Mixt he placeth Meteors under these latter but he calls them imperfect mixt Bodies because he did believe them not to have a substantial form as perfect Bodies have nor to be produced by the ordinary way of Generation This Doctrine is contrary to our Principles for we say that those Meteors which we see in the Air are in their kind and condition perfect Bodies not differing from others neither in respect of Matter which is one and the same to them all nor in respect of substantial form produced in the formation of them for we acknowledge no such forms but as unprofitable and Chimerical All the difference which we take notice of betwixt them ought to be taken upon the account of their formation and different conditions under which one and the same Matter that is to say Atoms do meet together by a disposition of their parts by an addition of strange Bodies by an introduction of Vacuities and by a conversion of their Figures After this manner are formed Clouds which are the Meteors of the middle Region of the Air and which have Water Air and Earth for their Matter for from the Vapours of Water and the subtile particles of Earth together with the Air with which they are carried up Clouds are formed which are sometimes so thick that they rob us of the Suns Light which happens when more of Earth than of Air or Water goes into their composition On the other hand sometimes they are so subtile that they can hardly or not at all be seen by us which happens when air obtains the chief place in their composition for in a word Clouds are nothing else but a congregation and mixture of Corpuscles or little Bodies of Earth Water and Air which are the proximate Matter of them the Vortex of the Sun the Motion of the Earth and the Winds are the three concurring Causes of their mixtion and elevation into the upper Region of the Air. Other sorts of Meteors are Rains descending from the middle Region of the Air and generated from the solution of Clouds that is to say when Water which hath the greatest share in their formation freeing it self from the particles of Earth and parts of Air thence forward distill as it were by an Alembick which happens because its particles being incrassated by the coldness of the Air the water is separated from the Air and falls down again to the place from whence it came in the form of little drops From this Rain proceeds the Earths Fruitfulness for it never descends but it brings some portion of the little seminal Bodies flowing along with it In Rains therefore is contained Salt and the Balsom of the Stars which Basilius Valentinus speaks of and from hence all Vegetables bud and increase The Curious enquirers into Nature may try whether I speak truth or no and whether they may not find a Salt as white as Sugar if they take away by Distillation the unprofitable parts with which it is involved Dew is almost of the same nature with Rain only it is more pure more subtile and more fruitful by reason of the Seasons of the Year which chiefly enjoy it viz. at the time of the Aequinoxes when the Sun and the Earth are nearest to each other which happens when the Earth passes the Aequator wherefore at that time it receives and carries along with it a greater number of solar Corpuscles depurated by his motion than Rain or Dew it self that falls at other times Dew falls down in round drops because its Corpuscles are round and its Atoms are of the same Figure with the Sun whether whole or in parts Dew penetrates the Earth and moistens those places where there are seldom Rains But the Sun's shining Beams presently carry it away along with them into the Vortex in the mean time part of this Salt or Balsom of the Stars contained in the Dew remains upon the Herbs and Flowers where we observe a kind of Viscousness like Sugar or Honey thus Bees gathering this Dew lade themselves with it and make Honey of it This Dew in the Hot Countries of Palestine Aegypt Arabia and Calabria is condensed into
the Creator and necessity of Nature and some only by accident and the power and plenty of Matter encompassing them So the Atoms shut up in the Heart that they may give motion to it and to the whole Body were incarcerated at the beginning of its formation or rather being cast into seminal Bands when God created it afterwards they are translated out of this first Prison where they had little or no motion into another where they enjoy a more free and wandring motion as shall be more fully discoursed of in the following Chapters The third thing that flows from this Principle is That these same Atoms are the Cause of Motion and Life and that there is more of action and more of Life where these are in greater plenty and number provided the Corporeal Machine be disposed to motion For one of the principal Springs being broke the vital Atoms lose their action the greatest part of them exhale and withdraw themselves and others wandring about continue Vagabonds without any order or method So that it is necessary that the parts of a Compound Body should be disposed in some Order which when wanting the vital Atoms exert no motion but this order of parts would be to no purpose unless the vital Atoms were present to give them motion The same thing we observe in a Clock where an integrity and just disposition of the Wheels are required together with the force of a Spring to set all the Wheels in motion Although there be a great proportion and likeness between living Natural Bodies and these artificial Machines yet nevertheless there is a great difference between them for Atoms are Natural Springs and exist Originally in the seed out of which the Body is produced and they themselves are the Artificers of the Machines which give encrease to it and dispose the Parts of it in such manner that they may there exercise their motions and this is that great Artifice of Nature which operates by seeds produced from God which exceeds all that ever Art can devise CHAP. II. Of the Differences of Lives THe difference of Lives are only known by the difference of Vital Actions of which there are four kinds to wit the Mettallick Vegetative Sensitive and Rational Man the little World enjoys a Life under which all others are comprehended and chiefly in him we observe a vegetative Life as in Plants and a sensitive as in Brutes besides which two kinds of life He possesseth a third of his own which is a rational Life He is nourished that is and grows like Plants he is begotten of another he is sensible as an Animal and he speaketh and reasoneth as a Man all these different operations which we see in Man perswades us to consider him especially and to begin with the life of Plants which seems less considerable than the sensitive and rational and which comprehends under it their generation growth and nourishing which three are equally conspicuous in Man as in Plants though in a more noble and more eminent manner CHAP. III. Of the Vegetative Life common to Man and Plants THe Life of Plants appears from their growth which supposeth Nutrition and both these suppose a Birth and this implies a Generation For whatsoever grows in a vital manner and by Nature is nourished so likewise whatsoever is nourished hath a birth and every thing that is born is begotten We will therefore begin to speak of Man's generation and of the first forming of him The Generation we here speak of is the production of a thing out of Seed under this generation are comprehended Conception and Birth as Separation and Death are included in the Corruption of things This is that which is not found in the Works of Nature whose conception is made in the mind of the Artificer and its Formation depends upon his hand but all that is external to the work which may be afterwards broken and divided when in the mean time it cannot be said that we take away Life from it or bring Death upon it So that whatsoever is Begotten to speak properly Lives and whatsoever lives is produced out of Seed Now Seeds are created from the beginning and by the Author of Nature ingrafted into every Plant and kind of Tree bearing fruitful Seed So we see that there is a perpetual propagation and encrease of individuals in every Species in the Earth as well as in the Waters and in the Air. All and the only difficulty remains in explaining the Nature of this Seed and the manner of its propagation These two are Mysteries in Nature which seem to surpass all humane reason Nevertheless I will give you my meditations of them And first of all I suppose we may consider Seed in general and as it is to be found as we have said in Mettals Plants Animals and Man. For after this manner being looked upon in general it is nothing else but a Medium disposed by God to the propagation of these four several kinds in the World so that one Substance as to its kind produces its like in the same kind as Mettal is produced from Mettal and a Plant from another Plant c. From whence appears the fanciful Folly of Chymists who strive to multiply Mettals without a Mettallick Seed and to produce Gold without its peculiar Seed For the same thing that in general Seed is in respect of the four named generals the same in special is Seed in respect of the individuals which are produced of it For indeed to produce Plants the Seed is only to be sought for in the vegetable Kingdom So in like manner to produce Corn Seed is required that is a grain of Corn to produce an Apple there is need of the kernel of an Apple or at least a Sien of it which contains in it part of the Spirits and seminal Corpuscles which insinuate themselves into the wild Stock of the Tree in which they are ingraffed or inoculated and produce the same effect that a grain does which is thrown into Earth fit to receive it This is that vegetative Seed which we here speak of and in this regard we consider Man as he is partaker of the life of this Species and begotten out of Seed Nevertheless we are to distinguish the two substances in Man viz. the material part which is his Body and his spiritual part which is his Soul Created by God whereas the other is begotten So that we here speak of Man onely as he is a material Compound without medling with his Soul which is immortal These things being supposed I turn me to the two difficulties which I have obliged my self to explain and I design them a peculiar Chapter CHAP IV. Of the Nature of Seeds and of their Propagation THe Learned Fernelius affirms that Seeds contain an Astral and Coelestial Spirit but Galen that they contain something Divine These great Wits have spoken most wisely and have considered the seminal Spirit as a thing surpassing the Capacity of our Spirits
the Eyes are of that Figure that they cannot be placed elsewhere without a violent concussion of these mutually self impelling Atoms and these concussions are sometimes the cause why when the Women are hurt the Child is not at all formed and that by reason of the sole inordinate motion of one Corpuscle which either does not or being hindred by others which cause this motion cannot find a place due to its Figure It is plain therefore that seminal Corpuscles have the Figure of that part from whence they are derived and the whole humane Body is no otherwise shut up in a small part of Matter than an whole Oak in an Acorn and an Apple in a Kernel The example brought by me above concerning the divers kinds of Salt dissolved in water which in evaporating part asunder from each other and each possesseth his place not without a difference of Figures will give some light to this my Doctrine CHAP. V. Of Nutrition which Plants and Brute Beasts have common with Man. NUtrition is a vital action and so proper to Living Creatures that as there is nothing nourished that is not Living so there is no Living thing that is not nourished All the difficulty lies in the manner of Nutrition for no Man doubts but Animals and Plants at the beginning of their existence are nourished and grow which could not be without the addition of new Matter which is changed into the substance of the thing Living This addition of Matter takes in its attraction preparation digestion and its distribution through all the Parts of the Body nourished These opperations appear in Plants wherein it is amiss to attribute that to Nutritive Attractive Digestive and Distributive Qualities which may be explicated by the motion of the Atoms or seminal Corpuscles contained in the Seed But because Nutrition is much more conspicuous in Living Creatures and especially in Man it will be necessary to explain the Reason how that is performed in him in the first State after Conception and afterwards when the Organs are formed For there is need of Aliment that the Organs which are just formed and tenderer then to be sufficient to undergo their Operations may grow and be encreased So that at the very moment he begins to live there is a necessity that he should be nourished CHAP. VI. How and with what Aliment an Embryo is nourished 'till the time of his Birth THe first thing that is done after the laying together of the parts of the Embryo and the disposition of its Organs is the infusion of the Rational Soul which God in one and the same moment Creates and gives to this little Body as its Lodging Forty or sometimes more days after its Conception what is done before the infusion of this Soul to speak properly is nothing else but a disposition of the Organs to receive it This admirable Structure begins from the Heart Head Bones and other particular Fundamentals and when it is already compleated and the Soul infused the seminal Atoms Presidents of the formation of the Body persevere in performing their works taking as Companions of their Office these Particles of the Mothers Blood which may serve to nourish the Infant being sensibly solicitous for its increase 'till the time of its Nativity Yet nevertheless it is very difficult throughly to declare the true Reason of the Nutrition and Life of the Infant for seven or eight Months together Gassendus recounts three Opinions of the Antients concerning this thing the first is of Alcmaeon in Plutarch affirming the Infant to be nourished by all parts of the Body drawing in by the help of the Pores a necessary Aliment The second Opinion is by the same Plutarch attributed to Democritus this Philosopher teaches that the Infant is nourished in the Mothers Womb in the same manner as it is nourished when born to wit by the Mouth and this is the Cause he says why the newly born seek the Breast with open Mouth The third is Aristotle's Galen's and many others who conclude that the Infant takes no nourishment in the Womb but by the Umbilical Veins which taking their Original from the bottom of the Matrix insinuate themselves into the middle of the Abdomen or Belly where being collected into one Trunk they lead on the Mothers Blood into the hollow part of the Liver where part of it is carried into a Branch of Vena-Cava and part into a Branch of the Vena-Porta and the two Arteries which accompany the Umbilical Veins having passed the Liver each of them apart go to the two Branches of the Aorta or great Artery and carry the Arterial Blood which they bring thither that it may all be distributed through the whole Body of the Infant and changed into a substance fit for its Nutrition This Opinion is confirmed by the refutation of the two former For the first is false For if the Infant was like a Sponge it would not be nourished but swelled by the Water or serous humour in which it swims and which is contained in the Amnion The second Opinion is not probable For the Infants head is placed betwixt both knees nor can it suck the Caruncles which are covered with a Skin as is supposed unless at one and the same time it should attract the water wherein it lies hid or penetrate the Membrane in which it is involved The third Opinion standing firm which I believe rests upon a better foundation nor does the Infants Stomach generate Chyle nor its Liver Blood the Mothers Blood subministring all those things And from hence it is that a Woman with Child communicates to the fruit of her Womb the purity or impurity of her Blood her good or ill nourishment as also her Health and Diseases and these Diseases are hereditary not but that there are some which proceed from the Fathers whose impure Blood licentious living ill nourishment and frequent excesses afford matter to these evils Besides we may say that the Infant in the Mothers Womb does neither live nor breath but by the Mouth Heart and Lungs of the Mother from whence it comes to pass that the Infant for the most part follows the Mothers affections and inclinations and seeing that in the state wherein it is in the Womb it is tyed to its Mother in so strict a bond of Union it is impossible that she alone should be feaverish nor that the big-bellied Woman should dye the Child remaining alive and healthful CHAP. VII How Man is Nourished after he is Born. AMan Born hath need of Nourishment now nothing can nourish him which hath not some Spirit of Life So Roots Plants Corn Pulse Flesh serve to the nourishing of a Man and all this business is performed by the benefit of Atoms and vital Corpuscles passing from one Compound Body to another This Nutrition is necessary to encrease the substance of the born Infant and so there is need of a new Compound Body to serve it for Aliment And this Compound Body must of
Tyrants as persecuted the Church and thereby procured Glory to Martyrs and as those who were the death of our Lord Jesus Christ obtained us Life destroyed the Synagogue built the Church they fulfilled the Prophecies and laid the foundation of the Gospel In the fourth and last place That is an accidental cause which produces a particular effect not foreseen and according to the course of Nature unavoidable if it hath respect to an intelligent cause and the effect be agreeable to wish the Heathens did point at this by the name of Fortune and according to their way of speaking we say such a thing is the effect of Fortune as when a Man is digging up the Foundation of a house and by chance finds a Treasure but if the effect be otherwise than prosperous then it is misfortune or the chance of Fortune As when a Tile falls from the top of a House upon a Mans Head that is passing by and Kills him here the Tile is the Physical and accidental cause of this Mans death which was inevitable according to the course of second causes having either their free or necessary motions These accidental causes gave the Heathens occasion to frame to themselves a Blind Goddess which they called Fortune to whom they did attribute an unconstant an uncertain and a various disposition of good and evil to this Man 's good to that Man's prejudice Of all errors this is not the least neither was it entertained by any but the ignorant and the meaner sort of People The wiser sort in that age did aim at a cause of all the effects which happen in the World that was less feigned and more solid this they would have to be Fate and that what without any reason was ordained by this universal and chief cause was inevitable so when any great misfortune happened as the loss of a Battel the defeat of an Army the change of State the subversion of a Common Wealth or the sudden death of some Illustrious Person all this was ascribed to Fate and they did commonly say Sic erat in Fatis this was the inevitable will of Fate so the Fates would have it And when any person undertook any great Enterprise as it was said of Aeneas being in search of the Golden Fleece if the Fates call thee that is if the Fates favour thee thou shalt attain thy end The great Wits of our Age are almost of the same Opinion concerning all the various successes of Prosperity and Adversity and all things which come to pass in this Life as if humane Prudence had been of no use and Divine Providence without any care had been idle But that we may speak like a Christian Philosopher supposing the existence of the First Cause and having demonstrated that it hath all the perfections of the Chief Cause since Wisdom and Power are the two inseparable perfections of the Supream Being and indeed so necessary for the conservation and government of humane affairs we ought to conclude that nothing happens in this World which is not decreed foreseen directed and perfected by the wisdom and strong hand of some Supream Cause which so exactly directs all things that they come to pass according to the end that was proposed in the production of them and indeed all those things by means unknown to humane Wisdom yet notwithstanding in respect of God who is the first cause they are certain and infallible who established the infallibility of effects in such manner that causes in their motion should be neither forced nor too violent There is nothing but what God soresees nothing but what is absolutely inevitable and free causes act always freely in actions which ought to be free CHAP. VI. Of Sympathy and Antipathy and the effects depending upon them THe wonderful effects which we see in Nature whose true and natural causes are not easily found out obliges Philosophers to have recourse to Occult Causes and to attribute all these effects to natural Sympathy and Antipathy which happens amongst the several Bodies whereof the World is compounded but if you press these Philosophers to tell you and to explain wherein this Sympathy and Antipathy doth consist they will give you no other reason but onely tell you they are done by certain occult and unknown causes to which they ascribe all those effects whose true causes they do not at all know But they would do much better plainly to confess their ignorance and say they know nothing of the matter That we may the better understand what may be said upon a subject so nice and delicate and give a reason of those wonderful effects which are attributed to Simpathy and Antipathy without the help of occult causes in the first place I suppose that the difficulty which occurs in explaining an Effect of this nature doth arise from this That the Mind is not able to know the truth of things but by the Senses which are the gates through which the Objects enter and form their Ideas in our understanding but because there are abundance of things which escape our senses it is no wonder that it is so hard to give a reason of things which are so remote from the reach of our senses as for example Iron moves it self and that by way of local motion and joins it self to the Load-stone we do not see that which draws the Iron to it though we see it attracted but we know not by what ways or means it is done but if we explicate this and such like Effects by saying they are wrought by Sympathy obscure and occult causes we deceive our selves for that is only a shelter and the true way of hiding our ignorance which we are loath to discover for there is no man in nature so blockish but after this manner can resolve all the Phoenomena in the Universe If it be asked why the Needle turns always to the North Pole is it enough to say that there is a Sympathy betwixt this Needle which is touched with the Load-stone and the Pole and that the cause of this Sympathy is obscure unsearchable and past finding out But if this be the way of Philosophising I refer it to those who are competent Judges of the matter Therefore that we may give a more ingenuous and solid Reason in the second place I suppose that there are no Bodies but that continually emit certain subtile particles and imperceptible corpuscles which are dispersed through the air and are at sometimes carried at a great distance unless they justle with other Bodies in their way By the help of this principle we find the reason why a Dog follows the foot-steps of a Hare or from a heap of a thousand stones he readily knows that stone which his Master threw and picks it out and by his command brings it to him From this dispersion of corpuscles we find the reason how the contagion of the Plague either from the person infected or from the wind blowing from that Region is carried a
Pole repels it because the Spirit of the North Pole enters in at the Pores of the Iron but the Southern cannot for it strikes against the Iron and drives back too much its Elastick Particles This Explication presupposes the Being of Spirits and Atoms and their Figures and Motions and as also small occult vacuities which are dispersed through all Bodies as we shall shew hereafter CHAP. VIII An Explication of many other Effects which we endeavour to attribute to Sympathy I Do not design in this place to shew all the Effects which do proceed from Sympathy and to give the reason of every one of them in particular I conceive such a Labour besides that it is very difficult is moreover useless for an Explication of one will serve to explain the rest therefore instead of all it will be sufficient to Explain some few of them That which first presents it self to our consideration is the Sympathetick Powder the Sympathetick Wood and the Sympathetick Ointment an Amulet and the Medalls which are of the same Nature which they call Talisman Sir Kenelm Digby Reports that the Sympathetick Powder will cure a wound when the person wounded is distant a hundred nay two hundred Miles so that the Cloath be dressed to which the Matter or Blood sticks which proceeded from the wound but principally there must be care taken that the wound be kept clean and that the Cloath be kept in a temperate place for if it be thrown into a place which is too warm it will cause an inflammation in the wound no solid reason can be given of this Phaenomenon so wonderful in it self but that it is by a continual entercourse of the Spirits proceeding from the Bodies which by continual motion are coming and going and keeping a tye or bond betwixt the Bodies and though our Senses are too gross to perceive them it doth not therefore follow that there are not such things as it appears by the example of the Spider descending or ascending and drawing after him an invisible Thread which proceeds from his Body so that he being in one end of the Chamber remains firm and fixed to the other end by the same thread by which he bears himself up and is moved from one part to the other I confess it is hard to conceive that there should be a Thread of Communication betwixt the Wound and the Blood which issued from it But that is neither impossible nor incomprehensible though the Phenomenon is not plainly infallible because this Thread being broke or interrupted the wound cannot be cured unless we take again fresh Blood and excite it by the means of this Powder whose Spirits do drive those which are in the Blood and mixing themselves by the strength of the Powder do carry and communicate its vertue to the wound and that at a considerable distance but not indifferently not at the distance of a hundred Miles as it is conmonly believed it is certain if that were done by Sympathy the Effect would be the same at any distance neither would it ever deceive us I cannot produce any more sensible or just reason to explain the Vertues and Effects of the Sympathetick Powder which depend much upon the due preparation of it they do not extend themselves so far nor are they so infallible as some would have for the reasons by us alledged The same thing may be said of the Sympathetick Wood which stops Blood if a little of the Blood which runs out of the would be put upon this Wood where so soon as that Blood is dryed the Flux of the other Blood is stanched and this they say is done by Sympathy but the true reason proceeds from the invisible adherence whereby both these Bloods are so subtilly connected together by the astringent Vertue of this Wood and by this Thread of Friendship composed out of Atoms variously twisted together communicates it to the Blood which flows in great quantity whereupon this Flux if it be not too vehement is stopped If this Effect did arise from Sympathy it would never deceive us because nothing can oppose Sympathy but it is not infallible as experience shews us Of all the Effects which hold us in suspence that which we call the Divining-Rod is not the least for it is very strange to see a Rod which is held fast in the Hand visibly to incline and bend it self towards that place where there is any Water or Mettal and more or less as the Water or Mettal is nearer to the Superficies of the Earth or is more remote from it and more deep in the ground and that which is most stupendious is that this Rod which does it shews no motion but in the hands of those who have obtained a particular vertue to this purpose which distinguishes them from others though it cannot be said who gave them this power nor why this Rod hath this motion in the hands of one Man and not in anothers Concerning this Subject the cause of this motion is to be considered which cannot be attributed to Sympathy for Sympathy is a necessary Cause and then this motion would be always and in the hands of every body which yet we see is not done Therefore the most natural Cause is to be enquired into which I deduce from these Mineral or Aquatick Spirits issuing from those places wherein the Mettals or Waters are which meeting with the Rod whose Pores are fitted for them to lay hold on attracts it by a Perpendicular motion which is natural to them and bends it as it were with a Silken Thread or a Golden Chain The difficulty is about the hand which holds the Rod for every hand is not qualified for this purpose nor is every Tree fit for it unless it be Hazel or some other of the same quality with it As to the Hand it is certain that the Hands as well as the Men do differ and that the Spirits proceeding from them are different and so it ought not to be looked upon as such a wonder that there should be Spirits which retain the Rod and hinders this motion and that they should proceed from the hand of one and not from the hand of another and that every sort of Wood is not fitted to receive the hold of all Atoms Of portative remedies which are called Amulets I say nothing but what experience taught me concerning them and of the manner how Quick-Silver sticks to Gold and Silver to Copper which forces me to write a particular Chapter concerning them CHAP. IX Experiments concerning Portative Remedies of Quick-Silver Gold Silver and Copper THere are certain Remedies by Physitians called Amulets which give ease to Humane Bodies in many Distempers as long as the Person carries them about him as experience teaches us of a Spider shut up in a Nut-shell and hung about the Neck is good to cure all Diseases of the Lungs the true Nephritick Stone being carried about one cures the Stone a little Bone of the Thigh heals
I have Discoursed Physically of the Causes of our Diseases in General it will not be amiss to trace òut the Particular Causes of them That this Doctrine which may be accounted new may the better be understood I suppose that we are never subject to any Disease but whose immediate Cause is either some Poison or Toxick 2ly This Poison consists only in emancipated Atoms and Toxicks in loosned Corpuscles 3ly These Atoms are not emancipated nor these sharp Corpuscles loosned but in the Corruption of Bodies 4ly Corruption is nothing but a Total or Partial Division and separation of Bodies 5ly There is no new Generation by which a new Body is made but by a precedent corruption or Division of another Body which ceases to be in Nature when one or more other Bodies possess the Room of it So when Meat in the Stomach is turned into Chyle when the Chyle in the Liver and the Branches of the Vena Porta is changed into Blood and lastly when the Blood is changed into our Substance as Flesh Muscles Nerves and other Parts of our Body by the last degree of Concoction there is necessarily a Corruption of the Meat which begins to be divided and separated by Chewing of it in the Mouth and it is digested and separated or Corrupted in the Ventricle Chyle to the end it may be turned into Blood is altered in the Branches of the Vena Porta and the Meseraick Veins and thence it is wholly and perfectly Digested that is Corrupted Concocted and Divided in the Liver unless that hath lost something of its own Substance The Blood designed for Flesh is filtred out of the Veins into the Arteries and Circulates until it be sufficiently purged and freed from Foreign Bodies and then it is changed into the Substance of our Body This Doctrine being supposed I say there are made in us Three Principle Corruptions which are the Concoctions or Digestions whereof we speak and I say moreover that there are Atoms in every one of them which are emancipated and loosed as likewise Corpuscles flying and deserting more or less as the Digestion is the better performed that is as the Pure is more rightly separated from the Impure Therefore it follows that we cannot be nourished unless we take together into our Bodies the Causes and Seeds of many Diseases It follows likewise that these Diseases are diverse according to the difference of the Corruptions of the emancipated Atoms or the loosed Corpuscles and that these Atoms are Poisons and the Corpuscles Toxicks which do produce Diseases by their violent Motion and they labour so with Reiterated Corruptions that they deprave separate and divide all the Parts of our Body Here we may behold the just Cause of the Pains of the Stomach and of the Wind Chollick and also of the Wind proceeding from the first Concoction of our Meat in the Stomach these winds are the Corpuscles or the more subtile Parts of that Corrupted Nourishment and when the more subtile and sharp Corpuscles are received into the Body they do proportionably to the Nourishment which is taken produce most troublesome and dangerous Pains and vellications such as we observe in the Chollick And if it should happen that amongst Corpuscles there should be abundance of emancipated Atoms they do ordinarily betake themselves to the Brain whence do arise Apoplexies and Lethargies or if they penetrate into the Muscles and Nerves they occasion the Palsie which ordinarily follows these bilious Chollicks This Indisposition degenerates the Disease into a Vomiting and Loosness when the Wind or the subtile Particles the loosed Corpuscles and the emancipated Atoms are so plentiful that all the Symmetry of the Humours the intercourse of the Natural Spirits and the whole Anatomy of the Body are overthrown by them whence it is conspicuous what great Confusions Winds Vapours and little Bodies and depraved Atoms are capable of producing in our Bodies And that I have concluded upon good Reasons That there is Poison to be found in all our Diseases whether we consider them in their Beginning when we perceive our selves grieved indisposed and to have lost our Appetite or that we take a view of them in their progress when those Winds those little Bodies or little Atoms are advanced in the Body and do work a Division or lastly if we consider the end when these Poisons and Toxicks and these Corpuscles being freed from their Chains and these emancipated Atoms bear the sway by the confusion of the Principal Operations they are the Cause of Death In the second Digestion which is in the Liver we find Winds and Vapours which are called Flatus's and sometimes those loose Corpuscles and also the emancipated Atoms these Winds do produce a murmur and Flatus about the Liver Spleen Hypocondria and the Reins and the Corpuscles which are lodged there do prick and exulcerate the inward â—â—rts and are the Causes of Imposthumes which are so hard to be Cured Besides the emancipated Atoms Flying do sometimes ascend up to the Head where they beget Vertigo's and Buzzing in the Ears and also Convulsions by their vellications in the principal of the Nerves Thence proceed Epilepsie and other Diseases which have the same malignity which in the Opinion of all Men being not a Quality is a Poison that is the Atoms of the Blood are emancipated which are a Poison to the Brain and especially to the Membranes and Nerves From the same Fountain proceed Shakings and the duplications of continuant Fevers as the Periodick Fits of intermittent Fevers do happen from loosed Corpuscles and Atoms which are emancipated in the first Digestion in the Stomach by reason of a Fermentation which they make These loosed Bodies are also the Causes of Swellings in the Feet Hands and other Parts as Inflammations Erysipela's as also Itch and sore Puscles do arise from Atoms which are emancipated in the last Digestion as for the Dropsie we may say that it derives its Original from Atoms which are emancipated in the first and second Concoction for they penetrate the substance of the Liver and render it unfit to produce a well constituted Blood. Sudden death is often occasioned by the sudden motion of the flying Atoms which escape in the circulation of the Blood and the emancipated Atoms opening the heart and by this passage giving an opportunity to the vital Spirits to make their escape is the cause of that present death which follows it CHAP. XVI Of the Causes of our Health IF that be true which I suppose That all our Diseases do not arise from Natural Qualities nor from Antipathy which is in the nourishment we take and that they are nothing else but a confusion and an inordinate constitution of the Spirits humours and parts and that this confusion doth proceed from the impetuous and disorderly motion of the Winds Corpuscles and emancipated Atoms as I said before Then it is certain that our health which consists only in the just intercourse of the Spirits and a proportionate
it may be concluded that there are as many parts in the Millet Seed as there are in the whole Terrestrial Globe Also according to this Opinion we must grant that a Body cannot be divided into as many parts as really it may and that neither the hither or further end of a staff can be found nor that there is a Circle or perfect Piramid nor that the parts of a Body can be immediately divided All which consequences as they are absolutely necessary so they are all equally absurd Descartes did endeavour to free himself from this difficulty by saying that the number of the parts of the Millet-Seed was neither finite nor infinite but only that they were indefinite But the evasion is ridiculous and these two Philosophers are forced to confess that every part of the Millet-seed hath its extension and if their Number be either infinite or indefinite then their extensions also will be either infinite or indefinite at the least which is absurd to affirm I add no more to avoid Scholastic Intricacies and distinctions CHAP. XX. The Properties Magnitude Figure Weight and Motion of Atoms AN Atom is a corporeal Being simple invisible and indivisible Solidity constitutes its Essence or essential property which distinguishes it from Spirits and Vacuity which have no power of resisting Atoms do necessarily avoid all our Senses because these are composed of many distinct and gross parts whose Object ought to be composed e're it can be perceived by the external Organ which nevertheless doth not destroy the truth and reality of Atoms because small Corpuscles do escape our Senses as we observe in Dust which sticks to our Cloaths and also in the Corpuscles of a Ring which is wasted and diminished by time and use in the Corpuscles of a Stone which is made hollow by the drops of Water which fall upon it in divers occult parts in a Mite which cannot be seen without the help of a Microscope and lastly in small Corpuscles which are seen to move in a Chamber by the help of the Sun-beams that we may omit many others which are smaller which without doubt we could see if our sight was sharper as I shall mention in my Animadversions about Experiments of Miscroscopes Though Atoms are most subtle and inperceptible yet they have their particular extension magnitude and figure from whence their differences do arise for the figure of some of them is round as the Atoms of Water Oyl and Quick-Silver others have cubicular figures such are the Atoms of Sea-Water and others are Pyramidal as those whereof Nitre doth consist there are some which have sharp points like needles ' as Fire whence we are to suppose that there are others variously figured This difference is necessary to distinguish Compounds And as these Atoms as to their solidity or invisibility and indivisibility which are their inseparable Properties are alike so also if they did not differ in their figure and thickness all bodies would be of the same likeness Weight is the Principle of the said Natural Motion insomuch as it doth resist a violent motion That I mention here that we may know whether motion of Atoms hath an internal or an external Principle or whether Weight be determined only to one Motion or that it be indifferently inclined to many And whether the motion of Atoms do tend to some Center And whether it be continuant or interrupted And lastly whether it be perpendicular or horizontal Parallel or declined right or parabolical or circular In order to resolve well this difficulty I suppose that Atoms may be considered in a double State The First State of them is before the Composition of the bodies which are made of them which may be called the State of Liberty The other is that which they have in the bodies which do consist of them which may be termed the State of obligation or servitude If Attoms be considered in their First State their motion is perpetual So that an Atom that is loose and freed from any composition is essentially in motion which ought not in the least to be wondred at for Motion in respect of a free Atom is the same that Understanding is in respect of an Angelâ— which is never without knowing unless his Intellect is bound and clouded From this Principle it is evident That Atoms are in continual motion unless they are hindred or that there is some obstruction in the way or that there are other Atoms resisting and repelling of them or that they find such as will stick unto them or that they insinuate themselves into the Atoms of certain bodies or or that they enter into some composition whereby their motion is stopped Nevertheless Atoms in Compounds are not altogether void of motion because they are not so straitly imbodied together but that they have some motion like Vibrations and Palpitations according to the liberty which is granted them by the disseminated Vacuities nay some of them sometimes do attempt their escape especially in porous bodies which therefore are sooner corrupted and perish than other Bodies which are more solid and more close It is yet more evident in living bodies out of which the animal Spirits which are but the bodies of Atoms and most subtile Corpuscles are dissipated by transpiration whence aliments are necessarily requisite for to supply the Spirits of the whole body which are dissipated by motion and agitation This motion of Atoms or the least Corpuscles in living bodies may be deservedly accounted the Image of their first liberty and tho' they do but seldom enjoy their full liberty yet they are apt to raise the greatest commotions in order to be freed and to gain their liberty this is the origine of many distempers as in Acute Fevers the Atoms or Corpuscles of the boiling blood or obstructed choller are carried and driven into the Brain where they produce watchfulness Deliriums and Phrensies According to this Principle that which we said before may be concluded That many Distempers do arise from minute Corpuscles and emancipated Atoms For These being driven forwards by other Atoms and forced back do run into the membranes Periostiam Meninges or intestines and cause Pains which they call the Collick Headach Gouts and Rheumatisms So that this solution of Corpuscles and emancipation of Atoms in our Bodies are much to be feared and to prevent this danger all motions of the body which are too violent must be avoided for these are the external cause of the confusion of the Spirits and the emancipation of the Atoms The emancipation of Atoms and also of the small Corpuscles which are composed of those Atoms are to be feared no less in the great than little World for the Winds are nothing else but emancipated Atoms which by their impetuosity being driven backwards and forwards do force all bodies which they meet with in their way It is these Atoms which agitate the Air and the Sea and cause Earth-quakes and also over-turn all things which resist their motion
of Atoms but upon the insolidity of a Vacuum he takes an Atom to be indivisible because it is solid but that that Solidity and Bodies likewise are not Divisible unless by reason of the void spaces which are found in them and which do desert the Interval by which the Body may be divided 'till we come to those Bodies which having no Vacuum within them can be divided by no Natural Cause because a Vacuum having neither solidity nor any power of resisting is the Passive Principle of every Physical Division By a Vacuum I understand the intermediate space betwixt the Parts And as that which has not a passive Principle of Motion is immoveable so also that which hath not a Passive Principle of Division is indivisible And that we may wholly silence all the Cartesians I do affirm an Atom to be indivisible because there is no interval in it by which means some Agent may divide it in the same manner that they deny that God is able to remove the Universe because they say there is no other place wherein it can be posited which I would willingly grant them if there was no place without the World. It is necessary that they should agree with Gassendus if there be no interval in an Atom The Question is If three Atoms be placed together in Order whether the middle one doth touch the other two which are on both sides of it This being supposed it must have two sides and two several Faces I also ask whether an Angel being immediately placed betwixt two Angels together with a third in a straight Line of three Foot long whether one of them be touched by one on this side and by the other on the other side And since there is the same difficulty it requires also the same Answer But I answer directly and say That all these for Example square sides of an Atom and their Faces are not Parts Physically distinct but only simple Beings and Physically Indivisible as the Philosophers do Teach that there is in Man a principle of Sense and a Principle of Reason though these two are but a simple Being and indivisible like an Atom and the sole difference doth consist in the respect of their divers Effects and of our Spirit which finds an interval where really indeed there was none CHAP. XXII Of the Disseminate Congregate and Separate Vacuum of Gassendus THe Doctrine of a Vacuum is contrary both to the Doctrines of Aristotle and Cartesius the First was of Opinion that it was impossible that Naturally there should be a Vacuum because saith he the Universal Nature is against it The other Ridicules this Fear of Nature though notwithstanding he teaches that there can be no such thing as a Vacuum in Nature Gassendus on the other side affirms three sorts of Vacuums the First of which he calleth a Dispersed Vacuum which he saith must necessarily be in all Bodies and this Doctrine he endeavours to prove by Motion which cannot be done but in a Vacuum For that truly no Body can be moved in a space that is taken up by another Body because there is no penetration of Bodies and therefore cannot be moved but in a void space The Cartesians do endeavour to elude this difficulty by saying that there is a yielding subtile and fluid matter which is not able to resist the Motion of a solid Body forcing the same But that this is but a flight evasion a poor shift appears from hence that this matter is uncapable of yielding unless it were filled with small empty Pores which are dispersed thorow which being condensed and pressing themselves together do suffer it to yield and when it is condensed so far that there is no Vacuum it yields no farther but it resists Natural Agents though of great force So we see air condensed and compressed in an Iron Tube doth resist a Staff which we endeavour to thrust into it therefore air which is a matter apt to yield ceases to be so when there are no more Vacuums dispersed in it neither can Bodies enter into it without a peneration of the Dimensions whence it appears that there is no such thing as a yielding Matter and that every Matter in its Nature is equally solid and resisting To this Demonstration I add further That not so much as a Gnat cou'd in the least move it self unless there was a Vacuum in the Air which is a matterâ— of it self apt to yield but that at the same time the Region of the Air nay and the Heaven it self must be in motion because if all things be full of bodies the Gnat cannot be moved but by driving the ambient Air which Air also drives the next and that again the next and so in a right line to Heaven it self and if the World according to Cartesius's Doctrine had no bounds this motion wou'd have an infinite continuance which wou'd be a thing both absurd and ridiculous in the highest degree This Philosopher did believe that he was able to elude this Reason by supposing this motion not to be in a right-line but Circular but besides that the Air is not moved but in that manner that it is driven and that indeed it is forced in a right line but not circularly as it is supposed it ought to be moved it is most certain that this circular motion by altogether supposing all Privation of a Vacuum in this Element is impossible For if there be no Vacuum all things are Full If Full the first part of this supposed Circle cannot be moved because it finds no place through which it can be moved Therefore it ought to remain immoveable with all other things which are in the Universe unless there were a Vacuum through which it might commence its motion Gassendus builds the Truth of these small dispersed Vacuums upon the truth of the figures of Atoms and their angles because Angles cannot but leave void spaces in Bodies as we see a great many Grains of Corn do leave void spaces in the Bushel wherein they are contained and do touch one the other I confess that these Vacuums are replenished with Air but Vacuums which for the same reason are amongst the smallest parts of the Air or Atoms can be replenished with no matter and if they be replenished with it I do demand whether the parts of this subtile matter have figures which if they have they cannot be united and joyned together without a Vacuum which if they have not neither have they Extension nor are they material according to the very Principle of the Cartesians To all that has been said we may joyn an Experiment about the rarefaction and condensation of bodies and the confirmation of disseminate Vacuums for Example take a Glass-Phial with a long neck which being well heated put it into a Vessel full of Water so that the end of the neck of the Vial may go a little way into it we shall certainly see that the water presently ascends to a certain height
Nature Solid is resisting and impenetrable to another and if all things were so filled with Atoms as that there should be no Vacuum all things would be hard and impenetrable nor would softness fluidness or liquidness be found in any Body but there would be every where hardness and an impenetrable resistency but a Vacuum which alone does not resist as it is more or less mixt with Bodies renders them less resisting more soft more liquid and more fluid to which may be added the figure of Atoms which is more or less fit for Motion and which admits of more or less intervals or Vacuities CHAP. V. Of the Quantity Weight and Figure of Compounds THe same three Properties which constitute the Essence of Atoms are found likewise in Compound Bodies Atoms have a certain quantity or grossness and obtain also weight and Figure but they differ only in respect of their Figures This magnitude or grossness of Atoms which we find out by reason only is visible to the Eye in compound Bodies The quantity or grossness of compound Bodies arises from the addition and gathering together of Atoms and of little Bodies which are thus formed of them which again is lessened by taking away the same Atoms or little Bodies Besides this General Cause of greatness magnitude and grossness we yet acknowledge two others viz. an Exteriour and an Interiour the first of these regards Artificial Compounds where the Artificer as an External Cause encreaseth or diminisheth Matter as he thinks fit But it is otherwise in Natural Compounds whose Magnitude and thickness arises from the magnitude of Corpuscles and their grossness and from the figure of the Atoms determining Bodies to such or such a magnitude So that each Tree Fruit and Animal obtains a Natural and determinate magnitude and grossness in respect of the magnitude and grossness of the little Bodies and the figure of the Atoms contained in their Seeds Hence it is that Giants beget Giants nor do Dwarfs ever come from Tall Parents But if in either kind the individuals are unequal to their Sires it happens accidentally by reason of hindrances caused by contrary Agents or by a defect or an excess of Matter or lastly by an intromission of many strange Bodies which in some particular individuals produce this irregularity Figure is the propriety of Bodies which if they be artificial the Artificer is the Cause of determining it according to his purpose either by adding or taking away some particles or small Bodies but if the compound Bodies are Natural they obtain their Natural figure which depends upon the figure of Atoms and Corpuscles After the same manner water is round because all the Atoms of which it is made are round The Weight of Bodies arises from Matter that is Atoms for that Body in which there are Ten hundred thousand Millions of Atoms is heavier than another in which there is not so great a number provided the Vacuities are equal or the Air it self being in their Pores be in an equal quantity But if you take two Bodies of the same Magnitude and Extension That precisely will be more heavy wherein more Atoms and lesser Vacuities are found and consequentially the Other more light The Motion of compound Bodies proceeds from external Agents driving them on with a greater or lesser force and the easiness or difficulty of the same motion proceeds from the figures of Atoms and of all Bodies and from the inclination which they receive from half emancipated Atoms which agitate all Bodies So we see that round Bodies are more easily moved upon a plain and again those that are pointed more easily enter into the Pores of others But this pointed figure is sometimes occasioned by the Artificer although not altogether from his hand for it is confest that he cannot make an absolute perfect point out of a Matter whose Atoms are all of them round From whence it appears that the Figure and Position of Atoms doth very much contribute to this but if a Body Naturally ends in a point as fire does it is because all the Atoms of which it consists are all of that Figure CHAP. VI. The difference between Natural and Artificial Compounds THose who reject Atoms and are the Asserters of substantial and accidental forms imagine with themselves that according to our Opinion there cannot be an essential difference assigned between Natural and Artificial Compound Bodies because say they they both consist of the same Atoms and are alike made from them three ways viz. by Addition Detraction and Transposition after the same manner as it comes to pass in the composition of Words Sayings and Discourses which are made by a various addition detraction and transposition of Letters This is the very same Example which we have brought nor do we desire any other for from hence it is manifest how from the same Letters without the addition of any thing else Words and discourses essentially different are framed And after the same manner out of the same Atoms Nature formeth Compounds essentially different so that there is no need at all either to admit or have recourse to either substantial or accidental forms which are plainly useless in Nature We may here observe and add further That all Letters are not fit to Compose the Name of KING By a parity of Reason all Atoms are not fit to make Gold so that all things are not made of all But as by the help of twenty four Letters we express a great number of different and contrary things so after the same manner Nature out of the same Atoms Composes Mettalline Bodies Plants and Animals by adding taking away and transposing of Atoms yet not indifferently but such and such Atoms of such and such a figure for all Atoms are not fit to enter into the composition of all kind of Bodies From hence is the First difference between Natural and Artificial Compounds I mean from this addition of Atoms unknown to the Artificer yet which Nature hath known rightly how to chuse so the Artificer makes an Arrow out of all sorts of wood but Nature does not make this wood out of all kinds of Atoms Secondly Artificial Compounds depend upon an intelligent Cause which in its mind conceives an Idea and end of its operation whereas the works of Nature depend upon a necessary Cause which operates without any Idea Thirdly Art takes perfect and compound Bodies and gathers them together as a Builder collects and gathers the Materials out of which he frames a House whereas on the other hand Nature first divides Bodies and takes those Atoms which are left after dissolution and fits them to the work it designed and out of them by the addition of some others which it meets withal and which are in state of freedom it produces new Compound Bodies There is a difference therefore betwixt Mixtion and Composition as there is betwixt the combination of Gold and Silver and the generation of these Mettals whether in the bowels of the Earth
run downwards For to say that Water will seek after its proper Centre is to flye back again to an Occult Cause and to renounce our Principles I conclude therefore that the Atoms Corpuscles and drops of Water are of a perfect round Figure and since they have a certain inclination without hindrance nothing can keep them back but that without interruption they do and will drive one another forward even to the World's End. The Fourth Part of Physick Of those things which are in Man and of Man himself as he is a Compound Physical Animated Body WE are now come at length to our Fourth and last part of Physick wherein according to what we proposed we are to speak of the things which are in Man whom now we consider as a Body animated Which compels us to speak of the Soul and of Life in general and afterwards descending to special we will explain the Life of Man as he is rational and we shall endeavour by Natural Reasons to prove the immortality of his Soul. CHAP. I. Of Life in general LIfe as we have said elsewhere appears only by action and motion So those Beings which have most of action and motion obtain also most of Life And we say a Man is dying when there is but little motion left in him and dead when it is quite abolished Every motion is not a vital motion for that it may be so it must be Internal of the thing that acts and proceed from a Principle that is not external Wherefore the motion of a Stone that is thrown into the Air is not a vital motion because it comes from an external Cause to wit from the hand of him that throws it I say further that it must be the motion of a Compound Body if it be a vital motion and for this Cause the motion of Atoms is not so because they are simple and indivisible beings neither capable of Life nor Death And for as much as Atoms are not Compounds tho' they compound Bodies so they are not said to live in the least although without their impression and ministery there is no Life nor no motion in the Bodies we speak of Life therefore is an action and motion of a Compound and Organical Body arising from an internal and seminal Principle And in this sense Mettals may be said to possess a certain kind of Life since they obtain a certain motion of vegetation by which they grow and we may determine this motion to arise from an internal and seminal principle though it be abstruse enough and the Organs of Life scarcely appear so that it is a very difficult matter to distinguish them in Plants and in some Animals as in the Fish called a Muscle and in Oysters which are nevertheless endowed with a more perfect life than Mettals and Plants We shall in the following Discourse tell you wherein this Life consists and how Mettals and Plants dye as well as other living Creatures There is a great difference between Life and the Principle of it tho' not in like manner between Life and motion or vital action For Life is the action and motion of divers Beings gathered by Nature together and united after such a manner as that the parts of it move one another as we see in Machines and what the Pullies and Springs are in these the same are the Spirits in Natural Compound Bodies that is the most swiftly moving Atoms From this Doctrine is collected first of all That there are Atoms more swift and fuller of Motion than others by reason of their subtilty and figure such as are Coelestial Fiery and Luminous Atoms to wit such as Heaven the Stars Fire Heat and Light are compounded of This we judge by the compound Bodies that are made and framed out of them For humane Spirits instructed with material Senses is not able to penetrate into the essence of Atoms and their special difference But we determine that the Atoms out of which Heaven the Stars and Light are made have Figures and activities greater more perfect and more fit for motion than those that compound cold and heavy Bodies although when the thing is well considered it may arise from their greater liberty and more perfect Figure Secondly according to our Principles we must say That the Vital Spirts so called are nothing else but a certain number of Atoms free from all composition and such whose Figure and condition renders them unfit for service and slavery This Doctrine supposeth that there are two sorts of Atoms in Nature some of which like Common-People are destined to Imprisonment Service and Bonds but others like Nobles to liberty and command over others Now those whose Lot it is to be like the Commons are made to compose the Machines of our Bodies and they are such as entangle one another and are linked and bound together in the formation of Bodies whereas those which cannot be bound nor undergo Slavery are destined to move the whole Machine of our Bodies as not being fastned to any part but running through all parts and bestowing every where motion sense and disposition These are what are called Vital Spirits because they bestow Life that is motion These Atoms therefore are not Life but the Principles and Authors of it Sometimes Atoms that Compound Bodies get out of Service and as often as occasion offers and Bodies â—uffer division are emancipated for in all separations and corruptions of Bodies some Atoms do flye away and like the first seek to recover Liberty and when it happens that these Fugitive Atoms are mingled together with those that are essentially free from thence arise conflicts in our Bodies and from These Ill dispositions and our Diseases which there is no help to be hoped for nor any cure unless these rebellious and emancipated Atoms are restored to their first confinement or else driven out of the Body that so by this means the Spirits may remain pure and altogether free in their motion and not be interrupted by these irregular Atoms which are the common disturbers of Nature and Health And for as much as some Atoms continually flye out of those Bodies which we use for nourishment by reason of divers degrees of Corruption which they are forced to undergo before they can be changed into our substance So it is certain that there is always in us some principle of a Disease to be found and that we never in this World enjoy a perfect Health and that those are only most healthy who are less sickly than others As I have said elsewhere that there are no Men absolutely wise but that they that are called wise are less ignorant than others But moreover if Captive Atoms are sometimes free'd by emancipation so on the other hand those which are not used to be detained are sometimes incarcerated and involved with others nor can they stir beyond the limits of their Prison And there are some which in like manner are so included with others by the Providence of
Muscles of the Breast The Pulse is nothing else but a percussion of the Arteries upon the variety of which the difference of Pulses depends The Cause of the Pulse according to Aristotle is the Natural heat of the Heart according to Galen it is the moving faculty according to Harvey this motion of the Heart and Pulse of the Arteries depends upon the circulation of the Blood which we will examine in the next Chapter Breathing comprehends two actions Inspiration and Respiration by the action of the first the Lungs receive the external Air and by the help of the last they drive it out The first is made by a dilatation of the Lungs and Breast as also by the motion of the Diaphragme by which the Lungs are opened like a pair of Bellows and are by that means filled with Air the second is made by a pressing downwards of the Diaphragme by which the Lungs are unlocked and the Air driven forth Breathing conduces to the tempering the heat of the Heart and to the exciting and preserving Natural heat besides it conduceth to the forming the Voice to perceiving Smells to expelling Excrements and dissipating the fumes of the Blood and lastly to produce vital Spirits in promoting their motion by which it happens that we dye when breathing ceaseth or when we take our last Breath CHAP. XVII Of the Motion of the Heart THat I may rightly explain the motion of the Heart I suppose it is moved by two different motions the first of which is Natural the second against Nature That resembles the motion of Machines and Clocks which are moved by help of Strings and Wheels So the Heart is the principal and chief Wheel of this animated Machine and moves and drives on all the others and takes its motion from the weight and impression of certain Fiery and Coelestial Atoms which like the Silk-Worm are shut up in the Seed and its covering and which give motion to it until they flye away from it which slight of the Atoms Death follows and an end of motion The Authors of the circulation of the Blood deduce the motion of the Heart from the Bloods entring into it saying that the Heart is opened by the motion commonly called Diastole the Blood entring into the Heart and that by the motion commonly called Systole the Blood returns back and this returning is the Cause of those two motions but it is more reasonable to say that the motion of the Heart hath its Principle in its self for it is Vital and the passing through of the Blood is rather an effect than a Cause of this motion for the Heart opens it self before the Blood enters in nor does the Blood go out but as it is driven by the opened Heart The second motion of the Heart is accidental and against Nature and proceeds from the intemperies of the Blood that passeth through the Heart and which impresseth this febrile motion whether as being more hot and subtile than it should be or having certain foreign Corpuscles mixed with it or being too thick and viscous or else offending in quantity it overwhelms the Heart and hereupon depends the difference of motions contrary to Nature as also the difference of Pulses and Feavers from hence proceeds the palpitation of the Heart intermitting Pulses Convulsions Suffocations and sudden Death And it is commonly said that the Life is in the Blood nor does any thing hinder why we should not say that Death is in it too when it is corrupted or very sharp and corroding or unfit for motion and containing such like Bodies as lie hid in Venoms and Narcoticks The motion which is observed in the Hearts of Animals taken out of their Bodies as for Example that of a Viper which continues a long while does not disanul Circulation but only lets us see that Circulation is not the Cause of the Natural motion of the Heart and if you stretch it never so far it is only its condition which makes it continue and keeps the same in its Natural state Whatsoever we say concerning the Heart and its motions does not make up that Idea which we conceive in our mind nor does it satisfie the mind of the Reader who expects we should explain from whence this motion of the Heart while it is in its natural state proceeds and what is the Cause of its immoderate motions That I may therefore satisfie the Reader I Affirm the Natural Motion of the Heart to be in the motion of the Vital Spirits shut up in the central Vacuum of the Heart where they are detained by little Membranes made firm by the interweaving of Fibres and of thin threads so that they cannot escape out since the Pores of these membranes have a Figure opposite to the Pores of those Spirits or Vital Atoms And seeing that Atoms enjoy an actual motion and which can no more be separated from their Essence than Intelligence from an Angel or separated Soul or the Inclination from the Will it follows that they are always in motion and by their motions by turns dilate the Heart This Doctrine supposes what has been said of Vital Spirits being as it were the internal Principles of Life and Motion as also of the essential and proper motion of Atoms and of Bodies compounded of Atoms but it is convenient that we remember that we have said that motion is Natural to Atoms and that God who hath created them essentially moveable preserves their motion and moveable Nature in the same action that he Created them Besides it may be convenient to remember that there are such a sort of Atoms which may be detained and constitute the parts of a Compound Body and others which are not Naturally such yet may be shut up such as those are which we have said are shut up in the central Vacuum of the Heart of Living Creatures And these indeed are shut up by the decree of the Creator and the determination of the seminal covering The Comparison of an Angel and the Rational Soul seems to contribute much to the illustrating this Doctrine An Angel is a certain indivisible spiritual thing and an Intelligence free from Matter and the Rational Soul is no less a certain indivisible Spiritual thing endowed with Understanding and Will as an Angel yet they differ in this that theSoul is consined or as being a part of the Compound can be consined by a material Body whereas an Angel neither is nor can be confined which notwithstanding does not hinder but that it may be shut up into a Body as it were an assisting Form yet it hath not any respect to an internal and substantial Form. Besides I look upon an Angel and consider it under the notion of Atoms naturally free and the Rational Soul under the notion of those which are subject to confinement It is true that a Rational Soul going out of this Dungeon or Physical Prison by reason of the Corruption of the Body which permits it a free exit is
like to an emancipated Atom which being free from the bonds of the Composition never returns thither again unless that be restored to its pristine or to a better condition CHAP. XVIII Of the Irregular Motion of the Heart in Animals and of Feavers I Cannot but say something of the inordinate motions of the Heart stirred up by divers Feavers and from that Occasion discourse of the difference of Feavers their Causes and Remedies Feavers are either Diary viz. an inordinate motion of the Spirits which are agitated and disturbed by emancipated Atoms or they are Hectick which attack the Fleshy and Solid Parts And these Feavers are excited by emancipated Atoms which insinuate themselves into the substance of our Bodies and are the Cause that the Corpuscles of the Radical Moisture are driven away and exhaled by reason of which the Body is sensibly dryed The other Feavers consist in the Humours and in their fermentation and ebullition and when this fermentation never remits the Feaver is continual where it keeps its periods by turns it is an intermitting Feaver and it is called either a Quotidian where it comes every day or a double Tertian or Quartan as Phlegme Choler or Melancholly predominate When it comes one day and not the next it is a Tertian when it remits for two days it is a Quartan when it rages for two days together and remits the third it is a double Quartan And all these Fits or redoublings are owing to emancipated Atoms or relaxed Corpuscles which provoke move and stir up this or that humour which cannot be done without an agitation of the Heart and a manifest Pulsation of the Arteries That which in this Subject is difficult to be explained consists in the regular Fits and intermission of Feavers that is to say what is the beginning and what the Cause of this Flux and Reflux and of this periodical Motion and State of Rest and how it comes to pass that Phlegme ferments daily Choler but every other day and Melancholly after two days of rest Physitians say this motion proceeds from the diversity of humours and that Phlegme has its motion and fermentation every day Choler every other day and Melancholly every fourth day But the Physical Philosopher examines this difficulty more nearly and the Sick Person has reason to rest satisfied when the Physitian knowing the Quality of the Feaver administers Remedies which evacuate the offending humours and prohibit the generation of the new and by this means the Cause being taken away they raise him up and restore him to health The Physical Philosopher who enquires into the true Causes of the motions in Nature and does not like the Physician precisely respect the Health of this or that Person but endeavours to discover the truth of all things supposeth first that there is no humour in our Bodies which goes on from Rest to Motion unless it be stirred up by some Agent and Mover So it is questioned what may be that Principle by which Choler after twenty or twenty-four hours rest is stirred up and what should excite the fermentation of Melancholly after it has sat down quietly and unmoved two days or there abouts Physicians who are truly Philosophers and ought to be so teach us that in a Cachochymick Body there is always a new generation made of these sort of humours and when they are already arrived to a due state of plenitude some sooner than other some and sometimes where there is a complication many of them go on together to a fermentation and that all this proceeds from the different Nature of humours and their more easie or more difficult motion as also from a greater or lesser quantity of one or more humours But it may also be asked what is the Principle of this agitation or fermentation in that State of Plenitude and for what Cause these Febrile motions are so very regular and periodick Here and every where we will speak Bona Fide and without a Fallacy and say according to our Principles that the Atoms asserting their Liberty with every dissolution of the Aliment Chyle and Blood as we have said elsewhere do by their sharp-pointed Figures tear the Internal Membranes and Tunicles of the Stomach and Intestines as also excite those horrours and tremblings at the beginning of the Fit and which are longer or shorter and more or fewer according as their Figures are more or less aculeated and rugged or smooth and orbiculate According to this Principle we may say that the Atoms from the first digestion of the Stomach challenging to themselves a Liberty and being weary of the covering of Phlegme and Salt-water do daily stir up this agitation but those which in the dissolution of Chyle withdraw themselves from servitude and which abound with a Sulphurous Water which we commonly call Choler do stir up a motion more slow by a day than the former and as many as are emancipated after the third Concoction and dissolution of the Aliments and are wrapped up in adust Blood or that black Excrement which they call Melancholly do produce this Febrile motion two days slower than the first according to these different dissolutions Where we must first of all take notice that the shakeings in the motion of these differing humours are not equal nay not in the very Fits of one and the same Feaver proceeding from one and the same Cause but which hath different degrees of activity To which thing besides what we have said the Quality of the Food given to the Sick Person in the time of the intermission doth much contribute Secondly the Fits of one and the same Feaver are not so very regular but that they frequently are perceived sooner or later as the Atoms the disturbers of Health are sooner or later set at liberty To which thing the regimen of the Sick persons manner of Living does not a little contribute Hence it follows in the Third place That the true Remedy of intermitting Feavers doth consist First in an order of Living Secondly in an evacuation of peccant or strange humours which hinder retard or interrupt or precipitate the digestion of Aliments which must be well observed by an experienced Physitian and Lastly the Parts which serve to the first Concoction are to be strengthned because their faults and defects can never be corrected afterwards Moreover if it shall happen that there are some emancipated Atoms as without doubt there are more or less of them in all Bodies they are to be expelled by transpiration or their Figures to be inverted by Remedies called Febrifuges For Experience teacheth us that there are some of those sort of Remedies very profitable which are administred with extraordinary good success and which are not fruitlesly administer'd by me And I have now some of these sorts of Remedies found out by me and administered which in one day have Cur'd the Quartan and double Quartan I speak the truth but I should injure the truth if I should go so far as to say
so by the dissolution of the parts the compound would cease which is plainly inconsistent with that Idea which we have of God who is simple in his Nature Independent and every way Incorruptible The first cause is not only One and without its like in its Essence but also one sole and without a second in that action by which the world was produced And for this reason this action is called Creation supposing nothing but meer nothing out of which all things were made by the only power of God without the help of any other having either the quality of an Agent or a Subject The world being produced by this first cause remains subject to the will and pleasure of it And in the same manner as it was produced by the sole act of this first cause so it is preserved in the same State by the sole influence of the same cause who as it did not want any other second cause in the Creation of the Universe so neither doth it stand in need of any assistance in the conservation of it Being and Nothing are so opposite to one another that the Philosophers always had it for a Maxim That out of nothing nothing could be made which is to be understood only in reference to second causes and not in respect of the first whose power is infinite and who can do what he pleases this power in the creation of the Universe was not applyed according to the extensiveness of its activity because it pleased God to terminate the being qualities and number of second causes which are created The Creation was no necessary action for the first Cause did not Create the World but at such a Time in such a Place and in such a Manner as seemed good to it self so it made all those things with the highest Liberty there being no other cause either equal or superior to it self who was able to compel perswade animate or incite it to the Creation of the world The World it self could not terminate a necessary action because it could not be Eternal for every thing that is of necessity is eternal neither had it ever a beginning nor can it have an end because it is against the nature of a created being which is limited in its qualities and duration no less than in its natural Substance If the first cause was free in the Creation of the world thence it follows that all things were made by direction of reason and understanding and by consequence according to a certain Idea and Rule But because the first cause operates after an independent manner it could not have the Type of its production any where else but from it self neither could it act by a rule distinct from its own being so God is not only the efficient but the exemplary cause of all things For the same reason it may be said That the first Cause which is God is the final cause of all things for when he as an intelligent and free cause produced the World he did propose to himself an end answerable to his Dignity that is himself and his own proper Glory so that the first cause is necessarily the ultimate end of all its effects CHAP. IV. Of second Causes and their Actions ALL Creatures are called second Causes because they depend upon the first neither do they operate but by the Command and Impression of the first this First or Universal Cause does act Uuniversally with particular Causes but after a manner agreeing with the Nature of every particular thing and according to the power which was given it when it was created which does not alter the Nature of the Causes nor the necessity or Liberty of their actions This power of acting which is granted to second Causes is not a quality different from their Nature and Being So the Power which the Atoms have of moving themselves doth not differ from the Atoms themselves the power of burning or heating doth not differ from the Fire to which it is inherent unless it be in the manner of our conceiving things and of speaking of them according to our conceptions So it is of an Action which terminates from the cause to the effect and which is nothing else than a certain relation or an actual subordination which is found betwixt the cause and the effect This action is never without motion or to say better action and motion is one and the same thing thence it is that a thing rests when it is without action and then it begins to move it self when it begins action so according to three ways of acting there are found in the nature of things three kinds of motion The first is made without Sense or Reason which we may see in Stones Mettals Plants and the Heavens The second kind of motion is made by sense and knowledge as are seen in all living Creatures The third kind joins Reason to Sense as we observe in man acting by Phancy who proposes an end to himself distinguishes between Good and Evil and hath the liberty of prosecuting the several Objects presented to his view either with love or hatred As an action is not indeed distinct from the cause acting nor from the effect which it doth produce so motion doth not differ from the thing moved or from the thing which moves it but both of them Is accordingly as they change their condition or cease to rest which from the Creation was never done without a certain local motion of the whole or some part thereof so the notion of rest is opposite to the notion of mutation and action as well as motion CHAP. V. Of Accidental Causes THere are many causes which are called Accidental Causes for properly speaking they are not true causes which sort of causes happens four manner of ways first a Musitian draws a Picture not as he is a Musitian but as a Painter so that the Art of Painting is the true cause of this work And as the Art of Singing contributes nothing here since it falls out by chance that the Art of Singing and the Art of Painting meet together in this Man and since the Art of Singing is no way requisite for the making of the Picture in this respect we may say that the Musitian is only an accidental cause of the Picture which he hath drawn Secondly a remote or indirect cause is called an accidental cause as when we say that the Sun is the cause of darkness because darkness is occasioned by the absence of the Sun Mirth is the cause of Sadness and Peace arises from War As a Man endeavouring to save his Friend whose Life is in danger and thereby unwillingly exposing him to a certain death is the indirect or accidental cause of his death As he who perswades his Friend to cross the Seas whereby he is cast away Thirdly an opposite cause which produces an effect quite contrary to that which it ought to produce is an accidental cause as it was with the subjects of such
the Sciatica Quick-Silver or a Toad hung about the Neck is a preservative against the Plague the Tooth of a Dead Man carried about you shall cure you of the Tooth-ach Oak-Moss gathered at a certain time and an Elkes hoof cure the Epilepsie There are such as preserve Children from having the Small-Pox and others which being tied to the wrist cure the Tertian and Semitertian So there are many others whose Effects are ascribed to occult causes and to the Sympathy and Antipathy of things I do not question the truth of these experiments because I am certain as to the greatest part of them having tryed them Without doubt there are many others which I do not know of and which nevertheless others might have seen but this I know that the aforementioned Effect is not infallible and when it happens it is done by the emission of certain Spirits or Atoms proceeding from those Remedies and penetrating the Pores of Mans Body and giving strength to the Animal Spirits to resist internal Poysons or resisting the external Poysons and fixing and hindring them from hurting those who carry the Amulets I shall say nothing of Medals which are called Talisman importing good Luck to those by whom they are carried about them nor of white Magnets which procure the kindness of all People and the favour of a Mistriss I give little credit to such things neither can I easily believe all things which are said of them and if Stars ought to have place here rather than Demons all is done by the means of Atoms Now I come to that which I am better acquainted with and of which I can speak with more certainty I mean of Experiments concerning Quick-silver and Gold it is certain that if any Man hath Quick-Silver in his Body or any where about him that the Gold-Ring which he hath upon his Finger or which he holds in his Mouth will turn white because the Quick-Silver sticks to the Gold and if this Gold-Ring be thrown into the Fire the Quick-Silver flyes and evaporates and if the same Ring be again put upon the Finger or held in the Mouth it will still grow white every time as long as any Quick-Silver remains in the Body This Phoenomenon is commonly ascribed to a Sympathy which is betwixt Quick-Silver and Gold as if the Quick-Silver should hastily go to the Gold and embrace it or that the Gold did draw the Quick-Silver to it but Gold enclosed in smooth Glass does not turn white no more doth it then when Quick-Silver is enclosed hermetically in a Glass there is no Sympathy to call it forth thence no more than out of a Box or Bladder wherein it is kept we ought not therefore to say that it was the Sympathy of these two Mettals which was the only cause by which the one adheres to the other for though we should grant that there is a Sympathy that is an agreeableness proportion and likeness between these two substances not in their imaginary qualities but in the figure of their Atoms nevertheless it must be confessed that the attraction of Quick-Silver to Gold is by an emission of their Spirits and Corpuscles near after the same manner as we observed of the Load-Stone and Iron There is no less a connexion betwixt Silver which the Chymists call the Moon and Copper which they call Venus than there is betwixt Mercury that is in their Dialect Quicksilver and the Sun that is Gold. If one Ounce of Silver be disolved in three Ounces of Aquafortis made of Nitre and Vitriol the Silver is reduced to Water neither is it ever after seen and if we would recover the Silver after such a dissolution you must take leaves of Copper and put them into an Earthen Vessel and pour upon them one pint of common Water then to this Water put the liquor in which the Silver was dissolved and it will turn it as white as Milk and in the space of two or three hours the Silver will leave the Aqua-fortis and joyn it self to the Copper in the form of Curd or white Moss when the water is clear throw it all out the silver sticking to the Copper is dryed and reduced to a mealy Powder and this is called Calx Lunae or Silver Calcined As to this we must take notice that if in stead of Copper you put in leaves or pieces of Gold Silver Lead or Tin the Experiment will not answer expectation neither will Silver stick to them as well as to Gold whence we must necessarily conclude that there is a certain Sympathy or peculiar connexion between Silver and Copper as there is betwixt Gold and Quick-silver so that we grant that if the transmutation of Mettals be not impossible no Mettal can be sooner changed into another than Copper into Silver and Mercury into Gold The difficulty is in knowing the true cause of a Connexion or Affinity which is so remarkable It is commonly said to be done by that sympathy or agreeableness which is between these two Mettals But in saying that we say nothing for we must enquire farther into the cause and foundation of this Sympathy so that we are forced to search for another Cause of this Effect and to say that Silver is not joined to Copper but by the means of a certain local motion of the Particles of the Silver which are dispersed in this great quantity of water and are congregated to joyn and unite themselves to the Copper there is no other cause of this local motion besides the Spirits and scent of the Copper which are dispersed thorow the water and there meeting with particles of the Silver which are wandring separated and dispersed are fixed to them by reason of the conformity of their Pores when the Corpuscles of the Silver are loosed and set at liberty in the water they leave it and descend being forced downwards by the concurring Particles of the Water and leaving no vacuity wherein the Particles of the Silver may be contained they find the Atoms of the Copper emitting themselves like the Odors of Aromatique Bodies and mutually entangle one another like littlè hooks they go directly towards the Copper and falls upon it as it lies in the bottom of the Vessel this Explication doth imply the Doctrine of Atoms and their figures weight and motions as it shall appear in following Chapters after we have discoursed of Antipathy CHAP. X. Of Natural Phaenomena which are attributed to Antipathy THere are observed to be many Effects for which no Reason can be given without the help of this feigned Antipathy I 'le instance to you some few which I shall endeavour to explain In the first place occurs the sight of the Basilisk who kills all whom he sees which they say is by Antipathy which is betwixt it and other Animals But it may be said rather that it is done by the emission of certain venomous Spirits which penetrate the Eyes of those which were seen by the Basilisk The nature of this poison
never said before or that I do not proceed in the same manner and the same Course in the Progress of this Philosophical Tract wherein I will sincerely endeavour to bind my self up to the Truth without having any Regard to the Prejudices of the Schools I return to Poisons and after I have Discoursed of Pestiserous and Viperine Poison which attacks the Heart it will be time to say something of those which immediately invade the Brain and from thence the Heart the Center of Life before I address my self to either general or particular Antidotes which deserve a particular Chapter by themselves Therefore I say according to the common Opinion of Physicians That there are Toxicks and Poisons which immediately beset the Heart as I have said of the Pestiferous and Viperine poison and others like them there are others which attack the Head such as the biting of a mad Dog Opium Solan and other Narcotick and somniferous Simples There are also Poisons which rush into the Liver and corrupt the whole Mass of Blood as the Venerial poison and others of the same kind Thâ—s diversity is ascribed to Antipathy and an Aversion whereby Poisons are carried to certain parts of our Body but the foundation must be shewed whereupon this Antipathy is built the water sticks neither can any solid reason be given why the Poison of a mad Dog attacks the head or that of the Viper the Heart Besides that this Antipathy is not sufficient to explain the Nature of Poisons though we may confess that they have an aversion to our Nature because they endeavour the destruction of it and do procure the separation and division of our Bodies It being supposed as indeed it is that a Mad Dog biting a certain part of our Body doth leave in that part a certain Spittle or Foam which enters the wound for unless there be a Wound there is no fear of danger the venomous Atoms being dissolved and emancipated and as it were raving mad do insensibly and by degrees creep through the parts of the Body and finding no softer parts than the substance of the Brain and by consequence easier to be divided and destroyed do produce the dissolution of it and therefore it must be granted that if the Brain could not so easily be dissolved and that the fluidity of its substance were not the reason why it so easily receives the impression that is the action and motion of the emancipated Atoms the poison of a mad Dog would produce but little disturbance in us It must not be said that that poison ascends the Head by Sympathy and ruins it by Antipathy but according to our Principles it ought to be confessed that the Atoms of the spittle of the mad Dog being loosed and emancipated are as apt to destroy the other parts as well as the Brain if the Substance of the brain did not consist of certain Corpuscles yielding to these foreign Corpuscles whereby they enter into the vacant spaces of them which having entred in at these little chinks or fissures they raise a Tumult and confusion in the Castle This truth is evident in slow poisons which stagnate as well as that whereof we speak until the emancipated Atoms of it find out some part whose Vacuities give them free entrance or they meet with some Corpuscles whose little Hooks or Angles do either accelerate or retard their motion For these emancipated Atoms being not received nor fixed but by weak Corpuscles are like a Bird having only his feet entangled in the Birdlime endeavours with all his strength to get himself free or like a Man who is to be thrown into Prison and is withheld only by one Arm uses his utmost endeavour to obtain his liberty so it is with free and emancipated Atoms which are partly withheld by these tender little Hooks whereof the Brain doth consist whence arises a furious agitation in the Brain it self and at length madness for indeed the madness is in the Dogs Brain to which some emancipated Atoms came from abroad or from some dead Carrion which the Dog did eat or from the Air in the Dog-days being then too much rarified or from too much dryness of the Brain proceeding from too much drowth and these Atoms go forth with the Spittle when the Dog bites some part of our Body and in time produces the same confusion with that in the Dog. The third sort of Poison which I promised to speak of is that of the Venerial Disease which sets upon the Liver and without a prolix declaration of the external causes which produce it it will be sufficient for me if I will declare in few words that which is necessary to know wherein they do consist and why Poison is so pernicious that it corrupts the Liver and infects the whole Mass of Blood and afterwards tho' slowly ruins the whole Constitution of the Body and the Oeconomy of its constituent Parts It is frivolous to say that the Venerial Disease and its Poyson doth consist in an Antipathy to the Liver and the Mass of Blood for the Cause and Nature of this feigned Antipathy cannot be assigned But in my Opinion there is no difficulty in the matter for by the common consent of Physicians this Poison is nothing else but a malign quality proceeding from the Vapour raised from the corruption of the Spermatick Blood which corruption is occasion'd by a mixture of divers Seeds This Principle being supposed we do reject this feigned maligne Quality for it cannot be said what it is or from whence this malignity arises but we acknowledge this Vapour and admit the Corruption of the Seed and we say not mentioning the malign Quality that there are certain Atoms excited by Heat and Motion which do exhale and free themselves from the loose and corrupt Blood and finding the Pores of mans Body and of the natural parts to be open and dilated do creep and insinuate themselves into them and in process of time do penetrate into the Spermatick Vessels from thence into the great Veins and from thence into the great Vessels and the Liver being the Trunk of them which they by dividing do alter and by separating do Corrupt whence at length there follows a corruption of all the Blood. The subtilty and continual motion of these emancipated Atoms appears from the Gout sometimes from the Reliques of the Venerial Distemper for these Atoms do penetrate into the marrow of the Bones and fix them above the Articulations where they find an allumenous matter to which they stick But because these Venerial and other emancipated Atoms are not fixed therefore they are moved in those places where they are like a Captive fetter'd in Prison looking about him which way he can most conveniently make his escape hence it is that the pain of the Gout doth not cease until these Atoms are discharged either by Transpiration Sweat or some other Evacuation or that they are wholly accumulated by other Bodies of the same figure
full and absolute Cure or partly which allays the violence of the Distemper But without doubt or contradiction the true Antidote of the Plague is changing of the Air or correcting of it by good Scents which being attracted within us together with the Air do attemper and correct it and their Corpuscles do check the impatience and the too-free motion of the emancipated Atoms The Poison of a Mad Dog is very hard to be cured and as that sort of Madness is accounted incurable and is publickly attended with a very deadly and fatal issue we are forced to bind those who are infected or suspected and at length to smother them between two Feather-beds The ordinary Remedy is to send them to the Sea to throw them into it several times Experience teaches us that that kind of Remedy is not altogether useless but is to be accounted amongst those which are most safe though it be not altogether infallible The antipathy of the Sea-water hath no room here and it were vain to alledge it in the confirmation of this practice Therefore I say that according to our Principles the emancipated Atoms proceeding from the spittle of the mad dog while they penetrate the substance of the Brain or at least begin to penetrate it or to be turned round its foldings to enter into its Cavities are interrupted in their motion so that they cannot enter into the Cavities of it nay and they are thrown partly out by those struglings which the Patient must necessarily suffer when he is cast into the Sea I do not nor will not deny but that there are Atoms or Corpuscles proceeding from the Froth of the Sea which entring into the Patients body thro' the Pores made open by the agitation or by breathing in of the Air and being comunicated to the blood do with their cubicular figures fix and withstand the emancipated Atoms which produce the madness or nearly dispose the body to it To comprehend in a word all that can be said concerning this matter whatsoever can heal or give ease to a Distemper so dangerous it does it only by hindring the Motion of those loosed Atoms or by quite expelling them out of the body The same thing may be said of the third sort of Poison that is the Venerial which is called the French disease That also hath its general and specifick Antidotes Quick-silver is commonly used for this business and that by reason of that antipathy which is betwixt it and the disease it is most certainly held to be the one only Remedy for it Others use Sudorificks as Guajacum Salsaparilla or animal or Mineral Bezoar or the salt of Vipers Others are only contented with one Remedy which is Mercury perfected by Nature and radically divided by Art also the more industrious do use Philosophical water prepared from the Beams of the Sun and Moon But tho' we may provide an excellent Remedy against this Distemper nevertheless it must be confessed that it is not radically taken away but by the help of those things which expel the Venerial emancipated Atoms from the Centre to the Circumference whether it be done by sweat or by an insensible transpiration this doth not happen by Antipathy or some occult quality but by the motion of the Particles of the Medicine which strike against these miserable Atoms and drive them out by those most convenient ways that is the Pores of our Body Therefore let us proceed to those Antidotes which are opposite to Toxicks not by Antipathy or some occult quality but by their different figures Therefore who will say that Milk hath an aversion to Sublimate or Arsenick though it be a most speedy Remedy and that no less than Oyl which doth resist Poyson because descending into the Ventricle and in its passage touching the Gullet and the orifice of the Ventricle as well as Milk doth lessen the motion of the Corpuscles of the Poison and blunts the sharp points and corners of them and defends all those Parts But of all things a Vomit is most useful in this Case being assisted with the help of Milk or Oyle Slackning the Tunicles of the Stomach and making the Passage more easie For if a Vomit should be given without smoothing and besmearing the Passage the Venome in coming out would Excoriate all the parts that it touched by its sharp-pointed Saw-like and Hooked Particles which are covered by the Particles of Oyl or Milk going out with them and are so prohibited and hindred from hurting In the Conclusion of this Chapter I do observe that Corrupt Humours in our Body as Physicians do affirm to us do degenerate into Poisons and Toxicks but they are silent as to the Reason of this Confusion and all the manner of avoiding it First they ascribe this Corruption to External Causes or to inward Occult and Maligne Qualities or to the excess of certain Qualities as Cold Hot Dry Moist or to certain unwholesom Diet and to ill Digestion or lastly to Obstructions hindring the necessary distribution of them But truly it is not demonstrated from thence that crude and an undigested Diet or Corrupt Humours do degenerate into Poison therefore the true Cause of this thing and the solid Reason of it must be enquired into To this purpose I do suppose that the Humours or Nourishment being any manner of way divided may be said to be Corrupted because I acknowledge no difference between a division and a corruption of a thing but in a separation which is not total there remain some Bodies which are neither Poisons nor Toxicks though they Oppress and Obstruct the Parts and hinder the intercourse of the Spirits as it happens in Phlegm Melancholly and Slimy Humours which are joyned with the Earthy part of the Excrements Besides these Bodies there are other Corpuscles which with their Hooks Sharp points and Stings do pierce prick and penetrate Man's Body and the Membranes of it as also the Veins Muscles and Nerves and do Corrode the Stomach and in the same manner with Poison do occasion Ulcers Imposthumes and Pustles These are those which the Physicians do call sharp biting and Chollerick Humours whereof that I may end this Tract concerning Sympathy and Antipathy and the Actions depending thereon and without these Occult Causes assign a true and an Efficient Cause of all our Distempers I am compelled to treat in a Chapter by it self and in that which follows shall be delivered the General means whereby the Causes and Roots of all Diseases may be Removed CHAP. XV. The True Cause of our Diseases THe Effects of our Diseases are pernicious and have their Origine either from within or without the Causes of them sometimes are so obscure that the Original of them cannot be discovered and though we define a Disease to be a disposition against Nature or an inordinate Constitution of those Qualities which are Constituent of a Right Temperature yet for all this we are not Wiser or more Learned than we were before Therefore after
Opinion for he says that the true Magnitude of the Sun and Stars is not much greater than they appear to us because says this Philosopher since we see them to have Natural Colours it follows then that we see them in their just Magnitude and he adds that we never see Objects in their true Magnitude but when we discern their Colour Figure and Circumference He endeavours to prove this his Opinion by the Example of fire which we behold truly as it is greater or lesser accordingly as it Flames and after this rate fixed Stars would not be much greater than they appear The same thing may be said of the Planets also because they are less remote from us than the Fixed stars I should not much dislike this Opinion if it were not rejected by the whole World and that the Shades Paralaxes and Eclipses evince the contrary Therefore we embrace the most received Opinion and positively affirm That the most experienced with the help of all their Optick Tubes are not able to delineate the true and just Magnitude of the Planets much less of the Fixed Stars whose shadow is small and they a great way distant from the Earth CHAP. V. Of the Motion of the Stars ARISTOTLE endeavouring to avoid or shun all the difficul 〈…〉 which occur in great plenty concerning the Motion of the Heavens thought he was easily able to explain it together with its swiftness and regularity by the help of an Intelligent Mover sent by God as an Adjutant Form to move push on direct and order the Heaven and each Planet in all their Motion This Doctrine seems to be at once both very easie and very clear for if Heaven and the Planets have really a kind of motion of which there is no doubt there is nothing more easie than to have recourse to an Angel who by Gods Command is the mover and directer of it But we should sooner agree upon the Point by having recourse to God the Author of Nature and saying that He as the first Author hath impressed this motion upon the Heaven and the Stars from the beginning of the World and that he doth continually conserve it as the First Cause by his general concurrence without using the Ministery of Angels to perform it which would be no more necessary than to assign a helping Angel to the motion of Animals and the Vegitation of Plants which no â—an will go about to do unless he deligns to make himself ridiculous ¶ This Opinion supposes the Earth to be in the Center of the World immoveable and that the Heavens are wheeled about this Center upon the two Poles of the World The Asserters of this Opinion do affirm That the Imperial Heaven is fixt and immoveable of a round or square Figure and that the Firmament observes the motion of the Primum Mobile and by the impression of it is rapidly moved from East to West together with the Fixed Stars which it violently carries along with it As to the Planetary Heaven they who affirm it to be Fluid do also teach us that the Planets do likewise in this vast space move with the like liberty that Fish do in the Water or Birds in the Air excepting only that the motion of the Stars is regular and that of Fish and Birds is not They who make to be as many Heavens as there are Planets or that every Planet hath its Orb are forced to confess that either their Heaven is fluid or if it be solid that there are passages and ways through which they are carried and to explain these appearances they are under a necessity of feigning certain Circles which they call Epicicles or Excentrix from whence arises unexplicable confusions whilst others say that these Circles are only imaginary But they who affirm the Sun to be immoveable in the center of the World who conclude that the Earth is in its place a Seventh Planet and hath a Motion round it as well as the rest and that the Firmament and the Fixed Stars which are annexed to it and implanted in it and seen with their Orbs to wheel round over our heads to be like the Sun equally immoveable are forced to explain the motion of the Planets and find no little difficulty in explicating their appearances we will enquire into those which are chiefly built upon truth by examining first those two most Famous Systems of the World I mean that of Ptolomy and Copernicus CHAP. VI. Ptolomy's System of the World Examined PTOLOMY and Aristotle with their Followers affirm the Earth to be in the Centre of the World immoveable encompassed round with Air which they think is next environed with Fire and so in order there are Orbs of the Moon Mercury Venus the Sun Mars Jupiter Saturn and of the Fixed Stars encompassing one the other called the Firmament then the Ninth Heaven which they call the Chrystaline and lastly the Primum Mobile which by its incredible rapidity carries all the other Heavens with it from East to West This Opinion seems to me to be absurd because it supposes the Heavens and especially the Primum Mobile to be of an immense Magnitude so that the Earth would be but a point in respect of Heaven Yet Ptolomy will have these immense Bodies and vast Machines to be moved round this point of Earth which seems little consonant to reason which dictates to us that little Bodies are much more readily moved round greater than great Bodies round less and we commonly say when we are roasting Meat that the Meat must turn round to the Fire and not the Fire turn round it It is therefore more commodious and more consonant to Reason that the Earth which is only like a point or a Gnat should be moved round the Heavens than the Heavens should turn round about it Most wisely therefore hath the Creator of the Universe disposed things in such a manner that the Reasons of them are conspicuous every where that we may say that God does not only produce Works which are good in their substance but also that he hath done good unto all that he hath made that is exactly in Number Weight and Measure Besides this General Reason which destroys and over-turns the Opinion of Ptolomy and Aristotle we may take another from the incredible rapidity of the Heavens motion about the Earth for if their Opinion be true in this Hypothesis and according to the reckoning of Astrologers we must confess that the distance of the Primum Mobile from the Earth is above an hundred thousand Miles from whence may be computed the greatness of this Heaven and the manner of its motion that it should perform and compleat its Circle in the space of twenty four hours whereas all People agree in this viz. That the Earth compleats forty Miles in every hour when in the mean time its Circle is but a point in respect of the Primum Mobile We must conclude therefore that its swiftness is incomprehensible and that every one point
of its Circumference compleats each hour more than forty times an hundred thousand Miles which is incredible To all these I add another difficulty which I have concerning this Opinion in explaining the manner and the little Hooks by which the Primum Mobile carries the inferiour Orbs along with it from East to West and that the Heavens and the Planets go to this Pole but come back from the other and then at last return to their first point by the sole Collibration or Ballancing of the Ninth Heaven or Chrystalline To which if we add the solidity of the Coelestial Globes in that manner as Ptolomy has affirmed then neither Aristotle nor Tyco Brache with his Epicycles and Excentricities will be able to take away these difficulties or avoid horrible confusions lastly these Philosophers could not explicate the regular or irregular motion of Commets unless by appointing Angels to guide them which is ridiculous CHAP. VII Copernicus's System of the World Examined THis Philosopher and many other Modern ones have built Systems of the World after another manner for they place the Sun in the Centre and will have the Earth and the other Planets to wheel round it as we have said heretofore This System would be sufficiently enough confirmed by refuting of that which Ptolomy Aristotle and their Followers have framed but onely this likewise labours under its peculiar difficulties The first of which is the experience of our Senses which seems altogether repugnant to this System for according to this Opinion we must conclude the Heavens which seem to move as also the Sun it self to be immoveable and on the other hand the Earth to be in continual motion which seems to be immoveable But this prejudice is very uncertain nor do our senses always so exactly and infallibly distinguish the motion of Bodies or Bodies that are in motion as experience teaches That when any one goes on Ship-board and the Ship sets Sail the Shoar and the Houses go away from him For to this Man the Shoar seems to go away from him though indeed he goes away from the Shoar Which happens from hence that the Eye does not discern the motion of the thing which is moved when it moves along with it which happens to a Man at Sea who does not at all take notice of the motion of the Ship which is under Sail because he himself is carried on by the same motion To this Opinion also is opposed the experience of a Stone thrown up into the Air and there falling down upon the Head or before the Feet of him that threw it For if the Earth is really wheeled round and moved while the Stone is moved it ought to fall far enough from him who threw it For we must conclude that the Earth is not turned round and by consequence that this System of Copernicus is false To this difficulty Descartes answers That a Stone must so descend as if the Earth was not in the least moved because both from the same Vortex and by the same impression the Stone as well as the Earth is carried round To this very same difficulty Gassendus answers after another manner saying that the Stone falls before the Feet of him that throws it up because it receives two motions from the hand of the thrower to wit one Horizontal and the other Perpendicular which since it hath received it ought to keep also and to describe a Curve regular and parabolical Line and after this manner fall down at the feet of him that threw it if he viz. threw it up streight and the Wind not contrary to it Just as we see in a great Bullet tumbled down from the top of the Mast falls streight down to the bottom of it though the Ship Sails with a very violent Wind. Lastly it is objected against the Doctrine of Copernicus That if the Earth be moved about the Sun it would sometimes be nearer the Firmament and the Pole and sometimes farther off and then that for that reason the fixed Stars especially the Pole Star must sometimes appear bigger sometimes lesser which is contrary to experience But they who defend this Opinion make answer that the mighty distance which is betwixt the Earth and the fix'd Stars is the Cause why this difference is not observed But indeed in that manner that I shall explain the motion of the Earth this Objection will appear to be of no moment CHAP. VIII Of the Motion of the Earth COPERNICUS attributes to the Earth three motions the first of which is called Diurnal by which the Earth is moved about its Axis as a wheel from West to East when as the Sun seems to be moved from East to West Another motion is from one Pole to the other according to the latitude of the Zodiack that is from one Tropick to another which motion is called Annual or rather half-yearly because the Earth in Six Months time runs through the whole Latitude of the Ecliptick and after other Six Months it returns to the same point from whence it had departed at the beginning of the Year So it passes through the same Line twice a Year to wit at the time of the Aequinoxes Lastly the third motion is made round the Sun whereby according to this Philosopher's Opinion we are sometimes nearer the fixed Stars and sometimes farther off There are not wanting some who attribute a fourth motion to these three which we call a Libration from East to West and so on the contrary But to explain all the Appearances the two first would be sufficient were we not compelled to take in the other two likewise The Diurnal Motion of the Earth by which it is turned and wheeled round its Axis and which is performed from West to East in Twenty four hours time is hard enough to be explained but here 's the Comfort that there is no less difficulty found in the Opinion of Aristotle and Ptolomy about the explaining the Motion of the Heavens which ought to be performed in the space of four and twenty hours Therefore to clear up this difficulty I suppose if we should be compelled to have recourse to an Intelligence as a Mover sent by God for this purpose We have as much reason to assign one for the motion of the Earth as well as Aristotle to assign many for the motion of the Heavens and the Planets By the same right we might have run back to the first Cause and its general Concourse after the example of Cartesius who is not ashamed to call in This to help him in explaining the motion of his Materia Subtilis and the Vortex surrounding the Earth as also of all other Natural Motions which God saith this Philosopher hath produced from the beginning and always preserves without diminution but only that this motion does transmigrate from one Body into another and as much of it as is lessened in one Body is increased in another This is the Cartesian Opinion But we are endeavouring to explain
this motion of the Earth by more Natural Reasons I say therefore and suppose that the Sun is immoveable in the Centre of the World and yet notwithstanding that like a Wheel it turns round about its proper Centre and this is that motion which is called Circum-Rotation and by this motion it disperses on all sides on every part these Corpuscles which produce Light and Heat These Corpuscles compose that great Vortex which is about the Sun and which with it is carried round and moves the Earth which is plac'd in the same Vortex with it like as a Stone is moved by the motion of a rapid Stream and this same Vortex carries other Planets along with it accordingly as they are more or less immerged in it According to this explication one may fancy the Sun to be like the wheel of a Clock which moves that which is next to it another way for when one Wheel is moved towards the right the other which it carries with it must of necessity be moved towards the left So whilst the Sun by its Circum-Rotation is moved from East to West the Earth must likewise be moved from West to East The other motion of the Earth is that which is called Annual or half-yearly and which arises from the Libration of the Solar Body and of the Vortex which drives the Earth from the part of the Pole and makes it daily go a degree farther and so the Annual as the Diurnal motion each day declines one degree onely from a Parallel from whence arise the vicissitudes of days and Seasons But if the Earth returns by the same steps as I may so say it happens because the Sun by its daily Libration drives it on from one part and then after six Months assuming an opposite Libration it draws it back for Three Months and for the other three Months which makes up Six it drives it forwards so that the Rotation and the Libration of the Sun makes a double or a triple motion of the Earth without the former's changing either its place or its Centre All that we have hitherto said according to the mind of these Authors doth not as yet satisfie a Spirit curious to know the truth So here are other difficulties remaining which must be taken away by more sensible and more Natural Reasons First Though we affirm the Sun to be immoveable and the Earth to be wheeled round about it or though we affirm the contrary there remains nevertheless that we give an account not only of each of these motions but also of the motions of the other Planets It is demanded what is the internal or external Cause of the Earths motion If it be answered that the Sun by its Libration is the Cause of it as we have said and as our Opinion is it remains that we demonstrate the Cause whether internal or external that gives the Sun this motion By means of which being librated from one side for Six Months it is also librated for as many from the other side and by this so regular motion it sometimes draws the Earth towards it and sometimes drives it from it as we shall see in the following Chapter what can be said about this Matter CHAP. IX Of the Sun the true Centre and Heart of the World. THe Sun being placed in the Centre of the World is like the Heart inspiring Life into all things and presiding over all the Works of Nature whatsoever even as the Heart in an humane Body is the Principle of its Life and all its motions this is that admirable Machine which without being moved out of its place moves the Spirits Humours and all the parts of our Bodies in like manner the immoveable Sun by his double motion shakes and moves the Earth as well as the rest of the Planets One only difficulty remains in explaining the motion of the Heart in the Microcosme and of the Sun in the Macrocosme But being about to treat else-where of the Earths motion we will here only speak of the Suns motion which I call a wheeling of it round about the Earth and afterwards we will speak of its Libration Elsewhere we have said the Sun to be not only of the same Nature with Gold but to be Gold indeed melted in the Centre of the World and Cupellated by the Fire of the fix'd Stars which are every where about it No wonder therefore that it is wheeled round like melted Gold in a Crusible and there sparkling and purified That this Hypothesis which will bring no little light to many things may be better comprehended I will bring an Experiment to confirm this Doctrine which seems new indeed but nevertheless it cannot be denied to be built upon the foundation of indubitable Experience I say therefore that if you take Gold and put it into a great Crusible with Lead Copper or other Mettals and make a Fire every where round it these Mettals will be melted together and compose a sparkling smoaking Bath this Bath or melted Matter is in perpetual motion and so soon as the matter is made hot it wheels round its Centre without intermission It would be much more conspicuous if this melted Matter in the Centre of the World were equally distant from all the points of its circumference for this being supposed no man will deny this melted Matter fixed in the Centre of the World and Fire being put to it every where and on all sides to remain in fashion as in a Crusible and to have the same motion of Circum-rotation and Libration which we attribute to the Sun. All the Obstacle we meet with at first sight consists in this to wit how this solar melted Matter can remain suspended not falling down on any part Secondly By means of what Fire it remains always melted Thirdly How it comes to pass that since Gold so soon as it is cupellated or refined remains in the Crusible in a fix'd Mass yet the Sun which is like to this Gold is neither fixed nor stands it still immediately but being wheeled perpetually round its Centre it continues in motion and is Librated in the Cupel without any intermission To the first of these difficulties I answer that we ought not to stand upon it because they who place the Earth in the Centre of the World do teach us that if a great hole were made through the Earth even as far as our Antipodes and if a Mill-Stone were thrown into it it would stop in the middle which is affirmed to be the Centre of the World and there remain suspended for to move forwards either way would be to ascend The same thing may be said likewife of Water or other Liquids which would remain suspended If therefore the Sun be in the Centre of the World why should it seem a wonder that it should remain there so suspended since that may serve him instead of a Cupel As to the other difficulty which belongs to the Fire I answer that there is no want of that because
rendredmore fix'd For this Reason the Powder of projection so called being cast into melted Mettal that is not fixed penetrates it and sixeth it by its own fixity But this Experience is not yet found but is still to be found out so that no Experience can be taken from a thing that is not equally as certain and as common as Aurum-Fulminans and Gun-powder which if there be such a Powder and it be such as they report it it is a Miracle both of Art and Nature CHAP. XVI Of Hail Snow Frost c. HAIL descending from the Clouds and falling down with violence is composed of Drops of Water hardned by Cold and it falls down with violence because it is expelled the Clouds by a strong expression almost after the same manner as your smallest Shot are discharged out of a Musquet Snow is Water congealed in the form of Froth the slakes of it in its falling are puft up and filled with Air which makes it very porous and light it contains also many terrestrial particles as appears in dissolving it it is white but may be made black by a sole inversion of its Atoms There are also in it many fiery particles which warm the hands of those that long handle it There is another kind of Hail also which falls in the Spring time it is like your smallest Shot or your Seeds of Coriander This only differs from Snow in the purity of its parts or in as much as it hath more Vacuities in it than there are in Snow and on the contrary Snow has more of Air and Fire in it than this kind of Hail but both of them are by the help of Heat disolving their parts reduced into Water Hoary Frost is Air incrassated by Cold and congealed upon the boughs of Trees upon the Hair of Travellers and upon the Herbs of the Field and it is called white Ice In this Chrystalline whiteness a bloody redness is included which may be extracted out of this Hoary Frost and which if it be well prepared conduceth very much to Health CHAP. XVII Of the Rain-Bow Halo and Pareliae THe Rain-Bow is the most beautiful of all Meteors and the Miracle of Nature it is seen when the Sun either rising or setting darts his Rays upon a Cloud full of little globular suspended drops of Water which by diversly breaking and reflecting the light produce that diversity of Colours which we observe in it which ceases either by a different position of the Cloud or by the absence of the Sun. This Meteor appears like a Beautiful Arch adorned with all manner of Colours which happens for as much as the Sun looks only upon its superficies and then when it is rising or setting and the Clouds are either in the North or in the South Some will have these Colours of the Rainbow to be only appearances and by no means real but this is an Error for there is nothing hinders but that these may be equally as real as all other though they are not so lasting An Halo is the appearance of a Circle about the Moon which ariseth from a gross and thick Cloud upon which the Lunar rays fall directly so that its middle is made pervious to them and broke through by them though the circumference be not which is therefore the appearing Circle and which is not as it is vulgarly imagined nigh to the Moon but it is in the expansion of the Air and far remote from the Moon Parheliae are counterfeit Suns formed in the Clouds either by the reflection or refraction of his Beams just as we see them in Water where sometimes many Suns are seen though there was never more than one We may say likewise that the Clouds in respect of us are like those prospective Looking-glasses which represent many Images of one thing placed upon a Table which one thing is only real and all the rest imaginary Yet this does not hinder but that these Parheliae may be true Lights and Suns Painted without Artifice CHAP. XVIII Of Air its Substance and Quality AIR is that Element out of which the Meteors are formed which we speak of Its substance is most subtile and most fluid by reason of the Vacuities dispersed through it It is nevertheless thicker and heavier in the lowest Region by reason of the mixture of Corpuscles coming out of the Earth and Water Some think it only a mixture of the little Bodies or particles of Earth and Water whereupon the quality of the Air we breathe in depends upon the Climate which we inhabit So that Air is not every where alike wholsome but very unwholesome in Moorish and Fenny Grounds from whence ordinarily gross and malignant Vapours thick and putrid Clouds arise which we take in when we draw our breaths The very same Air we breathe in and which when we take our breath preserves our Lives by its wholsome gales is able to bring Death to us when it comes laden with sharp particles which in their passage vellicate the Lungs and cause most vehement coughings Oftentimes also emancipated pointed and penetrating Atoms flow in the Air which entring in at the Pores of the Body disturb its whole Oeconomy or frame Others ascending by the Nostrils to the Brain stick to its membranes and produce Pains and Convulsions and are the Causes of violent Head-achs Vertigoes and Apoplexies And there are some also which penetrating the Organs of hearing cause hummings and noises there which continue for some time because their particles are of a figure fit for adhesion The Air most malignant and most to be feared is that which is pestilent by reason of the Atoms which come out from putrid and corrupt Bodies as we have said elsewhere The fluidness of the Air does not arise from its not being compounded of solid and material Atoms but from its being rare or loose and it is rare because its parts are far distant from one another This distance necessarily is space this space is again either full or empty if empty we have rightly concluded that there are desseminate Vacuities if full it must be material Let there be therefore material Atoms all which mutually touch one another and all things will be solid and there will be nothing fluid in all Nature unless we acknowledge dispersed Vacuities from whence the rareness and fluidness of Bodies arises as shall be more fully discoursed of The End of the Second Part of Physick The Third Part of Physick Of those Things which are under a Man viz. of Earth and things Terrestrial which are called Inanimate HAving discoursed of those Things which are and happen above us it is time now that we speak of those Things also which are under or beneath us as also of all Things worth taking notice of in the Earth and Water which constitute one Globe which we call Terrestrial But in this Part we will consider Terrestrial Things only as they are inanimate according to the common Opinion CHAP. I. Of Earth and Water
in general THE Earth as hath been said is a Planet habitable having three Motions The First of these is about its own proper Centre which is not the Centre of the World for the Circle of the Earth is Excentrick This motion is impressed upon it by the Solar Vortex as a greater Wheel carries a less along with it and this is called its Diurnal motion Another is about the Sun as the Centre of the World to which it is Concentrical and requires a Years time to return to the same point and this arises likewise from the Solar Vortex for the Earth being driven on by the Flux of the Centre of the Universe cannot be moved about its proper Centre without sensibly making an Excentrick Circle And from this two-fold Motion of it arises the other third viz. from one Pole to the other in the space of one six Months and returning back again in the space of six other which happens because it can go no farther nor pass the Tropick unless it recedes from the Solar Circle for here it hath only the Latitude of the Ecliptick For if it should recede it must ascend too for whatsoever recedes from the Centre of the Universe in respect of that ascends and so likewise from its proper Centre The Earth in all these motions carries the Water along with it for they both make but one and the same Globe which is altogether exact and regular on the Seas part but less accurate on the Earth's part by reason of the Vales and Mountains And though it be true that the Earth does not seem to us to be of a round Figure yet it is proved by Experience for that teaches us that the last part of the Ship which can be seen by those on shoar is the top of the Mast and the first Things they on Ship-board see as they approach their Haven are the tops of Towers From whence it may evidently appear that the Sea is as it were a Belly and eminence which insensibly is lifted up into a convexity that so with the Earth it may constitute one entire Globe Earth and Water are two immediate Principles of all Compounds which are to be seen in this lower Region of the World yet notwithstanding not they but Atoms are the first Elements as it is said else-where There is moreover a lesser number of Vacuities in Terrestrial than in Aqueous Bodies and this is the Cause that the Earth is more solid and the Water more fluid that is to say less solid than the Earth CHAP. II. Of Terrestrial Inanimate Bodies in general THere is nothing Simple but God an Angel the Rational Soul Atoms and a Vacuum God is essentially Simple in a simplicity of Essence Power and Act for whatsoever is in him is an act his Essence is no ways compounded nor his Power idle nor his Action ever interrupted An Angel is simple in respect of essence but his power is not always in act nor his action at least the same without intermission The Rational Soul which is a Spirit laid in pledge or at least a Physical Compound with an Organical Body is simple because it hath neither Integral Physical nor contained parts but it self is a Physical Part saving only that its powers are often idle and its actions are changed and interrupted A Vacuum is simple for since it is neither a Spirit nor Matter nor any thing else but a capacity of receiving a Body and it hath an essential emptiness it cannot be called simple but for as much as it cannot suffer composition by reason of its imperfection Lastly Atoms are simple because they are indivisible and the first Elements of Bodies out of which all compound Bodies are framed I acknowledge no other Elements no other substantial material forms in Bodies for they are not only unnecessary but impossible Yet it doth not follow from thence that the diversity which occurs between Bodies constituting the World and which are the Compounds of the lower World is no other than meerly accidental and not at all essential for according to our Principles we determine one composition to be substantially distinguished from another by Atoms which are the first Principles of its composition and essentially by the manner of composition that is by the disposition and ordination of its Atoms Corpuscles and all its parts They who conclude that there is no Physical Compound without a substantial form think Matter alone with its diverse Figures and in all its dispositions cannot possibly be the Cause of the special Properties which we observe in every one Body and that therefore a form distinct from Matter is required to produce qualities proper to every one compound Body As for Example Earth is in its Nature dry and Water is cold which could not happen unless Earth did obtain a substantial form which is dryness and Water such a one as Cold requires This is that form which restores dryness to the Earth and Cold to the Water when they are put out of their Natural State and condition to wit by introducing moisture into the first and heat into the latter This Objection how strong so ever it may seem is nevertheless but vain for we say that neither the moisture of Water nor the dryness of Earth are Accidental Qualities so that this ought to gravel none but those who acknowledge Accidental Qualities distinct from Matter Ours is quite another Opinion and our Language quite otherwise For we firmly conclude That all Compound Bodies which are in the World are compounded of Matter every thing else being excluded and that all contingent changes in them arise from Matter newly added or taken away or changing place or by some confused Atoms or Corpuscles brought thither from else-where or lastly by the more notable parts changing place or other ways disposed by the Action of external Agents CHAP. III. Of the various Qualities to be observed in Compound Bodies THere is a difference betwixt the Qualities of Simple Elements which are Atoms and the Qualities of Bodies compounded of them for the First as well as Atoms are immutable and incorruptible the others as well as the compound Bodies are mutable and fleeting For indeed Propriety follows the Nature of that Being of which it is the propriety So that if Atoms are immutable by their solidity the same must be said of their Qualities but Bodies compounded of many distinct Parts are forced to be changed as often as their parts change places or are wholly separated That which is corrupted as well as that which is generated De Novo is a Composition for as corruption is a division of substance so generation is a composition of it To Explain this Opinion There is nothing more commodious than the example of Syllables and Words For truly Letters are immutable indeed and according to their different place they vary a Syllable or Word without changing their figure substance and essence remaining always the same in what state or disposition soever they are placed
Water clear sweet pure and not at all Corrosive fetch'd from the beams of the Sun and Moon in which Gold is reduced into a clear and heavy Water and is as easily melted as Ice in warm water and then lastly Gold cannot be said to be reduced to its first state that is body unless this Water be turned into Earth and this Earth be made fusile fixt tinging and fit to elevate inferiour things making poor people rich and to make that perfect which was not actually so although it was potentially I say this division is hardly radical because it doth not proceed from a separation of its Atoms For Gold is only brought into Water and that is sufficient for to bring it into Atoms were to destroy it and it would be to no purpose and this I think exceeds the power of all Natural Agents For God only is capable of reducing Gold into its first Elements and to cause it to be no longer Gold either Natural or Philosophical CHAP. IX Of Silver Copper and other imperfect Mettals SIlver is a Mettal much less perfect than Gold because its Atoms are endued with Figures scarcely so perfect for there are mixt with it particles reflected from the Body of the Moon nor is that Mettal so heavy as Gold by reason of Vacuities dispersed through it which are both greater and more numerous in it than in Gold for which reason Aqua-fortis dissolves it without hurting the Gold. It is true indeed that Aqua-Regis dissolves Gold without touching Silver but that ariseth from the different disposition of Vacuities in these two Mettals and because the Vacuities of Silver are too vast for the subtile Spirit of Aqua-Regis which passeth through them without division and from the magnitude of these Vacuities in Silver arises a greater sound from Silver than is given from Gold. For the same Cause a greater and clearer sound arises from Copper than from Silver by reason to wit of its greater Vacuities into which not a few Bodies of Air penetrate which by their motion produce this sound And for the same reason That is also lighter than Silver for as much as Metallick Bodies are not so strictly bound together by reason of strange Corpuscles of impure Sulphur mixed with them hence it is that Copper is not so flexible or ductile as is Silver They are both of them softned in Rust because Silver has too little and Copper too great a quantity of Sulphur wherefore they mutually temper each other and the particles of each lose their acrimony Silver may be made potable as well as Gold and as potable Gold is the best Medicine in Diseases of the Heart so potable Silver is a wonderful specifick in affects of the Head. These Medicines are potable and extreamly profitable to Health when they are dissolved the third way we spoke of and are brought into water by a sweet water and a Friend to Nature and which the Sun and Moon make use of as a Bath As to Copper from it is drawn a potent and innocent Sudorifick Extract performing wonders in Chronick Diseases The Spirits of these three united by a fourth make a most excellent Medicine CHAP. X. Of Lead Tin and Iron IRON is heavier than Copper because its Vacuities are not so great and besides it is burthened with much strange Earth the Corpuscles of which enter into its Composition It is the only Mettal hard to be melted because of this not mettalline Earth it possesseth also many Corpuscles of a dry and not fusible Sulphur and very little of Mercury especially crude which melts Mettals so that to melt it there is required a body abounding with Mercury such as is Antimony But if it be mingled with a Sulphurous Body it is brought into a red yellowish Saffron-colour'd Calx out of which are made the powerfullest Medicines for obstructions of the Hypocondria The Salt of it is sweeter than Sugar and the Salt of Antimony is like it nor is there in Nature above one Salt that exceeds it in vertue and eminency These three Salts are the restorers of the radical moisture Tin is a Mettal abounding with much Mercury much Salt and but a little Sulphur the Salt of it is the sweetest in the World the Particles of these three substances leave many Vacuities in the mettalline Body from whence ariseth its greater sound and lightness There are three wonderful things to be observed in Tin The first of which appears in its calcination in which we see the weight of this Mettal encreased although many Vapours rise up from it and one would think that should much abate its gravity This according to our Opinion arises from this that the Pores of Tin are opened in calcination that the compound is inverted and a great many Atoms enter into them and fill them and leave fewer Vacuities than there were before and so upon that account there is more Matter or weight Another that I observe is That the Calx of Tin is very hard to be melted and indeed so very hard it is that the wished for end cannot be obtained unless you add a special Melter But this difficulty arises from strange and immettalick Particles which have parted the body of Tin and have entred into its Pores and hinder the re-union of the parts of this Mettal in melting The third is That Tin when it is mixed with other Mettals calcines them and hinders their refining and on the contrary makes them Volatile which ariseth from the irregularity of its composition from its fixed Salt incapable of being melted from the subtilty of its Atoms and the aptitude of its figures arising from their easily being divided Lead as it is more sweet so it is more sociable it purifies and refines Gold and Silver from all impurities and foreign mixtures It is the heaviest of all Mettals but Gold and Quick-Silver because there is a fewer number of Vacuities dispersed through it After the same manner and for the same reason in calcination it is increased as Tin is and it is easily melted because it abounds with a crude and indigested Mercury which makes all Mettals fluid and fusible It may be separated also from its terrestrial part and from its very sweet Salt. There are many things more worthy of note which I observe in Lead The first of which is its weight not much differing from that of Gold and arising from that because this Mettal is in a manner almost altogether Quick-Silver as also that the void intertities are filled with terrestrial and impure Matter which hinders the fixity of the Quick-Silver from whence an ill and imperfect coagulation precipitates it self but he that can separate this Quick-Silver and digest it by an agreeable Sulphur in a Vessel appropriated to this work hath found a most excellent Remedy against most Diseases For the aforesaid Cause this Mettal is lighter than Quick-silver and if Quick-silver be poured upon Leaden-Bullets laid at the bottom of a Pot the Bullets will ascend and swim
Sea that offers it self of Note is the Saltness of its Waters Originally produced from saline massy Bodies produced at the beginning in the Earth and melted by the help of the Waters which from thence as now they are were impregnated with Saltness The heat of the Sun does not a little contribute to thâ—â— saltness consuming its humidity and Phlegm as do also the Salt which Rivers and Floods wash out of the Earth in their passage thither From whence it appears that it may be truly said that all the Salt which is contained in the Earth is carried into the Sea and drawn out of the Earth by the help of Rivers and Waters derived from them and running through the Earth whilst they are filtred to constitute Fountains of fresh Water Now if we could filter Sea-Water after this manner there would never be any scarcity of fresh-water in Ships and long Voyages Another thing that I observe in the Sea is the Ebbing and Flowing of its Waters in some places so very remarkable and regular in their turns every six hours There are some who have thought that Rivers entring into the Sea on one part are the Cause of its flowing but falling into it from another part are the Causes of its Ebbing Others have attributed this effect to winds but the greatest part to the motion of the Moon and to the condensation and rarefaction of the Lunar Air. This is the Opinion of Antonius à Reita extant in his Book entituled Oculus Enoch Eliae where he supposes that rarified Air presses the Sea and lifts it up on both sides like Mountains from whence there ariseth its Flowing Which Air being afterwards condensed the Sea begins to subside and the Waters to return to their first State that is they Ebb. He endeavours to build this Opinion by this Argument to wit that this motion is most observable at the Full of the Moon at which time the Air is very much rarified and at the new of the Moon when it is very much condensed For my part I would rather say that the Ebbing and flowing of the Sea ariseth from the Earths motion from one Tropick to the other For it cannot possibly in its diurnal motion move a degree forwards daily as it doth without driving the Waters from one part and attracting them from the other According to this Opinion a reason may be given why its ebbing and flowing is only from South to North and from North to South and that they are lesser between the Tropicks Besides there is nothing contained in this Opinion which is not very probable But if there are some irregularities observed in ebbing and flowing they arise from Islands Rocks Straights or Promo 〈…〉 tories which very much hasten retard or lessen this motion and partly upon this account that is to say by reason of the Straights of Gibralter there is no notable ebbing and flowing in the Mediterranean Sea besides it is seated between the two Tropicks and is neither too much Northerly nor too much Southerly CHAP. XVII Of Springs and Rivers THere are two kinds of Springs viz. those that sometimes run and those that run always the first proceed from Rains but these arise from the Sea But to speak properly the Sea is the source of all Springs and Fountains for Rains arise from Vapours raised out of the Sea by the help of the Sun and then falling down by drops out of which arise the first sort of Springs which are not perpetual But perpetual Springs are derived from it more immediately by the help of some subterraneous Watery Store-Houses which are filled by aqueducts proceeding from the Sea. It is commonly asked why Sea-water is salt and yet Spring-water which comes from it is sweet To which difficulty it is answered the aqueducts rising out of the Sea run through subterraneous Sands by which the Water in its passage 〈◊〉 filtred and deposits its Salt or else the Salt is precipitated and falls to the bottom of these subterraneous Watery store-Houses as we see in Salt-Pits or after the mixing of Oyl of Tartar and Spirits of Vitriol or that the Atoms pass through imperceptible aqueducts through which the saline Atoms cannot pass by reason of their square Figures So water is made fresh by the help of straining Or lastly by the means of distillation So water being raised up in Vapours and then condensed distils into other receptacles which recieve it and send it to others till it comes to the place where the Spring breaks out It seems a Wonder that Springs arising out of the Sea should be able to ascend to the tops of Mountains To which difficulty it may be answered that the Water of the Sea is equally as high as the highest Mountain because the Earth and Water make but one Globe and the Mountains of the Earth do appear to us to be high and lofty only in regard of the Plains and Vallies in which we are placed and from whence we look upon them But the Sea is higher than the Plains and Vallies if you conceive it all Universally because it makes a perfect Circle And if a Line should be drawn encompassing the whole terraqueous Globe it would be found a perfect circle without any irregularity From this supposed principle it is evident that Sea-water does not ascend that it may find an exit out of the tops of Mountains but that going out of them it descends and produces Rivers in the middle of Plains and bottom of Vallies And this They ought to mind who have said that Water ascends out of the Sea to our Mountains three ways by which it is wont to be raised to wit by the means of Pumps Pipes or woollen Cloth so they say Sea-water may be drawn up to the heighth of Mountains by help of the Beams of the Sun and Stars or by Channels or Pores unknown to us and made in the shape of Pipes and disposed of after the manner as we see all the Wine in the Vessel taken out from thence by the help of a Pipe or lastly Sea water may insinuate it self into a spongy and light Earth which imbibes it and causeth it to ascend and flow after the same manner as we see all the Water contained in a Bason to ascend to the brims of it and by degrees to go beyond by the help of Cotten or a little Woollen Cloth As pleasant and as subtile soever as this fancy may be I think my Opinion is better grounded and more agreeable to truth By what hath been said it is apparent hitherto that Sea-water supplies Matter to Springs and Fountains these do supply Matter to Rivulets and Rivulets to Streams and Rivers which empty themselves into the Sea from whence they come out to moisten the Earth and that as I said before by a continual fluid circulation It may be lastly asked what may be the Cause of this circulation and from whence proceeds that force with which we see Floods and Rivers to
without the pretended Qualities of Aristotle or Corpuscles of Gassendus except those of the Air which are in motion For they being wanting or stirred up by an opposite motion little or very little is observed of it The motion therefore of Bodies is the Object of Sounds but there is a necessity for a fluid Body to be present that it may be violently moved to and fro which happens in irregular Sounds or with Method and Measure as in Musick and the use of Instruments This Fluid Body is sometimes intercepted by two Solid Bodies and is forced to go back with violent motion CHAP. XII Particular Questions concerning Hearing THe first Question is concerning the Penetration of Sounds and it is asked How it comes to pass that a Sound constant in Motion can more easily penetrate through a thick Wall than through Glass or Water I answer that the thickest Walls have great Cavities into which the Air insinuates it self or lies shut up in them whilst they are Building After which manner without doubt it is shut up in Guns made of melted Brass which is the cause that when they are tryed they sometimes burst asunder which hapned about two Months ago at Niverina in a Field near St. Germans Air therefore is more easily shut up within Walls whilst they are Building than in Guns whilst they are casting And this included Air receives its motion from the external Air and communicates the same with that which is found in the Breech or adverse part of the Gun. Which thing does not happen in Glasses which have but very small pores into which the External Air cannot enter only Light and the most subtile Air enjoying this priviledge From hence it follows that Bodies which have none or but very small Vacuities and contain no Air or but very little are more surd and less resounding as Gold and Lead however Lead is more surd than Gold although it hath more frequent vacuities but they are less regular for since it is endowed with more Pores than Gold it ought to give a greater sound than Gold. For to the making a sound it is not sufficient that the Body contains Air but that the Air be so bound up that it cannot sind a way out and as to the sound of Bells that depends upon the Air intercepted between the Clapper and the Bell and wandring round the compass of the Bell before it can get out and drive on other Air yet so as that it presupposes Air shut up in the Pores of the Mettal The second Question regards the propagation of Sound or the sound of Bells and Guns are heard a great way off But the reason of this is not difficult to be given for the Air violently driven on because it is easily moved gives a sound according to its motion greater or lesser and because the motion of Air is not momentaneous so the sound likewise is not in a moment brought to the Ears Certainly the Air that is impelled drives on other Air on every side until that circular motion ceaseth as we see when a stone is thrown into a Pool the water is moved in circles This motion in respect of Sight is not in the Air we see the stroak ere we perceive the sound for Light is determined in a moment nor does a contrary wind hinder Light as it doth sound for Light does not depend upon the motion of the Air and the Light of the Air is fixed in the same manner as the Centre of the World from whence it draws its Origine to which it is firmly and immoveably annexed at least that it be not condensed and grow thick The third Question regards the repetition of Sound and is called Eccho and it is nothing else than a repercussed and reflected motion of the Air by hard Bodies or retained and renewed by other Air shut up in the Cavities of Bodies and if there are many Cavities in a streight Line there are made many reflections and the Eccho is multiplied and that more or less distinctly as the reflections are more or less perfect and the Ear more or less distant from the angle of reflection which is always formed right forwards and is streight unless there be some hindrance and hath always a certain and determined Distance Fourthly it is asked how it comes to pass that the strings of two Harps Tuned alike although they be distant two or three paces from one another the one being struck the other will give a sound I answer that the air of one being struck into motion does by its motion excite the motion of the other which is constituted in the same state or tuned alike For here to alledge Sympathy would be nothing else but to flye to the Sanctuary of Ignorance Fifthly It is asked Why some sounds are sweet and very pleasant and others on the other hand harsh and displeasing It is answered that this proceeds from a diverse motion and from the ruggedness and smoothness of Bodies as also from the smiteing of the Air that is driven to and fro Sixthly it may be enquired from whence the noise in the Ears proceed and it is answered that this inconvenience proceeds from a motion of the interior Air against Nature which sometimes happens from the breaking in of foreign Corpuscles or from the solution and emancipation of some Atoms or from the Pulse of the Arteries or motion of Vapours which striking against the Drum of the Ear make that humming noise of the Ears Lastly it is asked why some People hear better than others and we may answer that this proceeds from the impurity of the interior Air For not to say any thing of those that are born deaf or have their Organs ill formed or have no interior or included Air or of Old Men in whom this Air is dissipated or of those whom a kind of thick humor falling upon the Organ after a long Disease makes Deaf or who are wounded or have an Imposthume in their Ears I say that those who have most of this interior and purer Air have their Ears more accurate and their Hearing more distinct if withal the Auditory Nerve be well Composed CHAP. XIII Of Smelling its Organ and Object SMELLING is an action by which we perceive and distinguish Smells the external Organ is the Nostrils the internal are some glandulous and spongy parts like Teats which descend from the Brain to the Nostrils or the Olfactory Nerve or Odours which affect the Spirits contained in the Nerve and move them and these Spirits being moved and stirred up carry the sense of the Odor to the common sense The Object of Smell are Odours in quality not distinct from Bodies but are rather Atoms or sulphurous Particles going out of Bodies their Figure is hooked and adhering from whence it comes to pass that they adhere like Oyle or fatness and are preserved a long time in Chests among Cloaths especially Woollen ones And therefore contagious Particles lye hid for many Years
in Ward-Robes and they who frequently Visit those that are Sick of the Plague do not use Woollen Garments but Linnen ones to which the contagious Particles do less adhere From this Doctrine it appears that Smells are little Bodies which issue out of all Compound Natural Bodies especially Living ones by reason of their frequent agitation and which have Pores more open than Bodies not animated Besides it appears that these Corpuscles do never go out of Bodies in greater number than when they are a dissolving after which manner a smell exhales out of Gold and Silver dissolved excelling that of Musk and Amber From Antimony dissolved an Oyle is drawn of a very grateful smell and by another way a Sulphur is drawn out not to be endured for its stink And by the help of these Odoriferous Corpuscles Dogs Hunt Hares and find out their forms and by this means they discover their Masters foot-steps It is an argument that this is done by the help of these Corpuscles because they are dissipated by Wind and hindred by Dew and Experience teaches that those that handle Musk carry the smell of it a long while about them From whence it is known that these very small Bodies are adhering and that they have hooked Figures and that they do please and tickle according to that proportion which they have with the Organs CHAP. XIV Of Tast and its Object TAST is a Sense Natural and proper to Animals and by the help of that they distinguish Savours making a difference between the grateful and the ingrateful The Organ of this sense is the Tongue and Palat and it is done by the help of Spongy Flesh and of Nerves which terminate in the Tongue and â—arry the Animal Spirit to the Organ and the Savour to the imagination Savour the Object of Tast consists in certain saline Corpuscles of Aliments or other Bodies out of which they come and pleasantly or unpleasantly vellicate the Tongue and Palat according as their Figure is more or less rough and pungent or smooth and round and more or less adequetated to the Organ Since Savours are Corpuscles of Salt it follows that they differ according to the diversity of Salts to wit that they are sharp sweet bitter sowre and the like according to the Nature of the Salt that bears rule in their Composition and according to the quality of Corpuscles coming from elsewhere which change the Natural Savour of things as Wine by the addition of Water loseth both its strength and Savour although in this condition it is more grateful to some than when pure Wine From whence we know that the diversity of Tasts does not proceed from the sole diversity of Savours but also from the diversity of the Organs and hence it is that all people do not relish alike one and the same thing nor have all People a Tast equally delicate from whence it comes that some are delighted with those Meats that others abhor The Organ also is sometimes so ill disposed and the Tongue burdned with so great a quantity of ill Humours that things of the most grateful Savour seem insipid as also things not very sweet seem bitter which thing happens in a double and a continual Tertian Ague by reason of the dominion of Choler CHAP. XV. Of Feeling FEELING is a general Sense extended throughout the whole Body and is made by the help of Membranes such as the Skin the Scarf Skin and the Skin that covers the Bones called Periostium and others that are internal and this sole sense distinguishes every thing that by its contiguity brings pleasure or Pain The Object of it is Hot and Cold Soft and Hard Moistness and Dryness Concerning these different qualities of a Body we have treated elsewhere excepting Heat and Cold as which are not Physical accidents but two particular Bodies Heat is a heap amassing or flowing together of sharp pointed Corpuscles which penetrate into solid Bodies and do there cause a Division and do dissolve the more perfect Bodies and this is what we call to be set on Fire and to be burnt For Fire does not burn Wood but by dissolving nor dissolves it but by burning Cold is an heap amassing and flowing together of Atoms and Corpuscles of a blunt and plain Figure and hence it is that Cold does not penetrate into the Body but with pain and torment as also it excites a frequent motion of the Parts or shivering Besides there are not wanting some Particles so gross as to stop up the Pores of the Body and to drive the Heat into the inward parts which we call Antiperistasis by reason of which the included Heat becomes stronger which is the Cause why the Heat of the Stomach in Winter time is greater than it is in Summer and why Wells are warm and reak like Smoak For the same Reason Heat being shut up in our Bodies by the external Cold sometimes such like fumes are raised up in the Brain which are not without a great deal of danger Feeling is several ways performed and first of all by application where Body is moved to Body and Hand to Hand by penetration in making a solution of that which was whole as a Needle pricking the Hand Secondly Feeling is made by separation one Body coming out of another which if occasioned by Nature is always accompanied with pain as in non-Natural ejections Thirdly this Sense appears in the motion of those Bodies which are contained by others for sometimes they move themselves with so great force and do so press rend and tear that they excite pains not to be endured as in violent Head-aches the Pleurisie and pains of the Gout and Cholick CHAP. XVI Of the Speech Pulse and Breathing of Man. VOICE is common to all perfect Animals as well as Men but so is not Speech or an articulate Voice Brutes express their sense of things by Natural Voices and Men their interiour Speech to wit Thoughts by outward Speech as its Interpreter And this is done by the motion of the Tongue as also of the Air after a certain manner driven to and fro between the Teeth and the fluctuating windings and turnings of the Throat This motion is natural and voluntary For Discourse or Speech is an expression of an action of the Soul to wit of Thought But this Thought cannot be outwardly made manifest without the command of the Will or the strength or weakness of the Imagination The dilatation and contraction of the Lungs as also the action of the Muscles of the Breast serve to the formation of Speech and a Voice becomes sweet and harmonious when the Lungs and the aforesaid Muscles act methodically as also when the Air is duly reflected repelled and interrupted by the passages and turnings and windings of the rough Artery and where the Corpuscles of this Natural little Tongue are less rough and more free from strange Bodies The Diaphragm Stomach and Belly move when we speak and follow the motion of the Lungs and the
clammyness humidity and viscousness do stupifie the Animal Spirits and Sleep is sweet or restless according as those Vapours are sweet or abound with Corpuscles or are stirred up from Choler or other things of an irregular Figure or where some emancipated Atoms make the disturbance The mixture of these Atoms is often the Cause of Light-headedness Madness and Hypochondriac Melancholly and they likewise produce watchfulness by an inversion and confusion of the Ideas in the imagination from whence it happens that we see that which we never see directly and sometimes Monsters and horrible things This motion of the Images or Ideas is sometimes so very violent and there is so great a Troop of these emancipated Atoms in the Brain that those that are asleep do sometimes rise out of Bed Talk climbe up Walls Bathe themselves and then go to Bed again without ever waking all the while Death is commonly called a perpetual Sleep and in Animals excepting Man it is nothing else than a total dissipation of the Vital Atoms or a cessation of motion in which their Life consists In Man these things are not after the same manner although however all these things cease in a dying Man either immediately as in a violent Death or by degrees as in a Natural Death we must confess nevertheless that in that respect something else is to be accomplished to wit the separation of the Soul which God gave him and which returns unto him that gave it Before we go any further and that we may make an end of this Chapter and be as good as our Word I am forced a little more specially to discourse concerning the Death of those things which have Life For whatsoever is Created and Compounded of many Parts and Liveth is subject to Death Man who is Compounded of a material and Organical Body like other Beings dyes at last but because he hath an immortal Soul Created after the Image of God he only dyes that he may live Eternally with God if he be Faithful and his Death is no more than Sleep and a passing into Eternity What a Christian Philosopher ought to think of this Soul I shall declare in the last Chapter of this Book Here I will say something of his Body as also of its Corruption and Dissolution The Rational Soul never goes out of this Mortal Body before the motion of the Heart is stopped this motion which is not voluntary ceasing Life can no longer continue since it consists in this motion If the Rational Soul was only in the Brain as Duncan and some others will have it it would be hard to tell why it should depart upon the cessation of the Hearts motion whilst the rest of the Parts are in good order As for my part I consider it in its Spiritual Nature believing that he must have too mean an Idea of this Spiritual Substance who confines it to the Brain and to the smallest part of it That Opinion which affirms it to be present every where in the whole Body although it operates more particularly in the Brain and Heart seems to me to be more Reasonable and for this Reason the Soul acting in the Heart the Organ ceasing it departs in the same Moment It may seem a wonder to not a few that the Rational Soul should so depend upon the material Body but since it so seemed good to the Author of Nature we ought to rest satisfied The Body is endued with Organs for the sake of the Soul and the Soul is created for the sake of the Body and one is made for the other and the Conjunction of these two make a compleat Man. One part onely does not make a Man nor does a separate Body make up the Essence of a Man and indeed a dead Man is not what he was 'till he Rises again The Soul therefore is annexed to the Body by such a sort of Tye that it cannot act but by Organs So that he sees nothing when his Eyes are out he hears nothing when his Ears are stopt and the chief Organ being deficient the Soul departs because it can do nothing This Chief Organ to wit the Heart is deficient many ways it may be stopped and suffocated for want of Air and respiration for the Atoms of Light implanted in the Heart at the time of a Man's Conception the commerce of the Solar Spirits being intercepted for want of Air do sometimes suddenly stand still they flye away finding a passage through a solution of the continuum or through Pores made fit by a burning Feaver in the Heart all the Water of the Pericardium being dryed up Thick and viscous Blood does sometimes stop the motion of these Vital Atoms Poyson also does by its acute Particles pierce through the Heart and give an exit to these Spirits of Light which are tyed to those which the Sun bestows upon us and are attracted by them returning thither from whence they came Let us see now what the Body does in the Grave it putrifies there that is it is dissolved some Corpuscles or Atoms withdraw themselves some part of the Body is changed into Worms some of the Vital Spirits resisting It is a folly here to imagine any substantial form of the Dead Carcasse or to acknowledge partial forms of the Bones Flesh Veins Arteries and such like things Subjects to the form of the dead Carcasse or alone without this Form. These are Illusions and Chimera's Matter is the same and all the change that happens consists in this That when the Rational Soul is absent there remains nothing besides matter the Organs by little and little lose their Figure and having lost their Composition they lose their action that which was compounded is dissolved and the greater part goes into Dust and Ashes the Luminous Spirits recede and follow the motion of the Spirits of their kind some Parts or Corpuscles joyned to the putrifying Body purtifie in the place where they are Experience favours this Doctrine A certain Servant to a Noble-Man whose Nose had been by great misfortune newly cut off freely parts with his own Nose to serve his Master This Nose being put in the place of that which was newly cut off took Root and grew together after such a manner with a Cartaliginous Flesh that it seemed to be Natural About twenty years afterwards the Servant dyes in a far Countrey and was Buried and as by degrees he putrified so after the same manner this end of a Nose began to putrifie to be corrupted and to fall off parting from that part to which it had so long stuck without withering whilst the Servant lived the part following the condition of the whole I say moreover that the least parts or Corpuscles which proceed from a Body the Body being Dead and Corrupted they also are Corrupted and joyned in commerce with Atoms of the same Nature which they do by inviting them to joyn and come together And here 's an Experiment which every one can understand It is
mixture of the humours doth not proceed but from things constituting and preserving this just temperament and by the same it is conserved As there are many things which destroy Health so there are also a great number of those things which restore and confirm it The things which destroy it are those which rarifie the humours and occasion winds which dissolve bodies and do emancipate Atoms Those which restore it are such things or such remedies which hinder the division rarefaction and dissolution of the Humours and Parts of our body or since it happens that necessarily there is a corruption in every digestion and a division of the aliment chyle and the blood as we observed before from the same Principle it necessarily follows that every thing that preserves Health hinders the alteration of it and also restores it being lost which drives out of the body these Winds these Corpuscles or these injurious Atoms And that also which removes these Seeds or internal Principles of our Diseases out of our Bodies doth not produce that Effect by a certain Vertue or Physical quality or by a certain Antipathy as it is said of Rubarb and Senna but by motion and action which is made upon these rarified bodies these loosed Corpuseles or emancipated Atoms proceeding from every digestion in the bodies of those which are most healthful This Motion is performed either by Purgatives or Emeticks or by Sudorificks the two former of these are fitted to eject those which arise from the first and second digestion and Sudorificks do expel Corpuscles or Atoms of the third digestion but here is no room to shew the differences of these Remedies however we must trace out the manner of those Operations I said a while that Medicaments do operate only by a vellication of Membranes Nerves and Fibres and which is produced by sharp Corpuscles flowing from the Medicines and sticking to the aforementioned parts whose motion is communicated to the subtle Foreign bodies that is the Excrements of every particular digestion whereby these matters are driven forth the nearest and most commodious way for evacuation I 'le make an end of this Chapter with an Example of a familiar Remedy by Means whereof every man may preserve his Health without either bleeding or Purging nevertheless I do allow that bleeding sometimes is necessary and very useful to evacuate those emancipated Atoms or Corpuscles which are loosed in the veins from the digestion in the Liver especially when they being shut up and cannot find their way out they stick to the Pleura Membrane and prick and vellicate it and thereon produce an inflammation known by the name of Pleurisie Therefore in this Distemper as also in continual Fevers Bleeding and Sudorificks are by no means to be omitted The same thing may be said of using Purgative Remedies or Emeticks to evacuate earthy Excrements as flegme and slimy humours arising from the first digestion and also Serosities or Choller and Melancholly being the Excrements of the second Concoction but because the defects of the first Concoction are not mended or repaired in the second and the first is more perfect as the Ventricle is more pure and more clean and cleared of that viscous Flegm which disturbs its action and hinders digestion Without either envy or prejudice I do here produce a vulgar Remedie as most useful to preserve or restore Health if it be rightly used as it should be as I have found it by experience besides that it manifests the Truth of my Principles which supposes every evacuation to be made by motion and vellication of the sharp Corpuscles or penetrating Atoms Therefore I take every morning a Goose Feather fit and slender as it is in its own Nature I put this gently into my mouth and I thrust it further to my jaws and hold it there for some time and I draw backwards and forwards and I perceive a vellication made by the Feather on my Jaw Palate and the other Parts adjoyning and likewise after this vellication I do observe that Water Phlegm and viscous humours being dissolved do flow in great quantity for the space of a quarter of an hour And all this is done without any violence or danger hereby I find that the Head is lightsome and the Stomach freed and disburthened and that thereby the Appetite is increased and that the Corpuscles which before ascended to the Brain by way of Vapours are evacuated incarcerated or involved in the viscuous humours which are flowing and afterward the first digestion is better made and it is evidenced by experience that as the ventricle is less burdned so our Sleep is longer sweeter and less interrupted Were it not that I fear to exceed those bounds which I proposed to my self I could make many useful Observations upon this Subject But I must remember that I do not speak of Medicine Remedies Health and Diseases but by chance and occasionally and it is sufficient if I oblige the Publick and the Learned with the Doctrine of Atoms and that I be helpful to Them as well as to the Sick by the means of those Remedies which I discover and which I freely propose And though I offer many things which were neither said taught nor writ before nevertheless I beg the Readers pardon for that I add no more to this matter for I am afraid if I should to be tedious to him and if I have enlarged my self too far I hope he will forgive me it were hard to say less of these things except a man would say nothing at all of them besides that it is grateful to every man to speak and write of those things which he loves and are agreeable with his Profession CHAP. XVII Of Formal Exemplary and Material Causes FOrm and Formal Cause is one and the same thing and when we say there are two sorts of Forms that is only according to our manner of conceiving things So we say there are two sorts of Formal Causes the Substantial and Accidental But all these Forms are imaginary neither do true Philosophers acknowledge any other Substance to be in Natural Compounds than Matter except only in man nor any other Form than the disposition of the Parts because all these Forms are altogether useless Moreover these great Sticklers for Forms cannot say what they would mean by a Substantial or Accidental Form Therefore we do with a great deal of Justice lay aside these fictitious Forms as being but Chimeras and of no use The Exemplary Cause may be referred to the formal because it is the Idea and inward form of that which we frame in our Spirit so the formal Cause of a Picture is the disposition of its parts according to the disposition and ordination which it then had in the Spirit of the Painter The same may be said of all rational Agents which are endued with understanding There is no difference be twixt Matter and a Material Cause and there are two sorts of material Causes as well as of matter