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A43008 Archelogia philosophica nova, or, New principles of philosophy containing philosophy in general, metaphysicks or ontology, dynamilogy or a discourse of power, religio philosophi or natural theology, physicks or natural philosophy / by Gideon Harvey ... Harvey, Gideon, 1640?-1700? 1663 (1663) Wing H1053_ENTIRE; Wing H1075_PARTIAL; ESTC R17466 554,450 785

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circular motion is evident in that the continuous effluvia of all bodies convert themselves into a like motion Doth not the thick smoak of Coales of Gunpowder of Boyling water in fine of all things in the World turn themselves round in the open air What is it you can cast up into the air but it will incline to a circular motion Do not those little Atoms that are seen by us in the Rayes of the shining Sun the same which some Author is pleased to term light it self probably because the Sun through its reflection and refraction upon them engrosses its light so as to render them to be light glistering bodies to the eye make choice of a turning and winding motion Which if so what reason is there to move us to detract the said motion from the continuous steames of the Heraclian stone Authors I remember as Gilbert Cabeus Kircher and others are accustomed to pronounce the Loadstone to contain a collection of all the properties of the Earth in her and reciprocally the Earth to partake of the qualifications of the Loadstone but without reason Nevertheless I may justly set down that the Loadstone is enricht with all the dignities and vertues of Fire and Air For as Fire and Air attract move circularly are diffused to the periphery even so doth this stone Here we may equally imagine Poles Axis Polar Circles AEquator Meridian Horizon a common and proper motion c. VII I shall begin with its Poles whose Axis in most places interfects the Axis of the fiery Heavens into oblique angles which in some Climates happen to be more or less obtuse or acute except that about the tenth degree beyond the Fortunate Islands and in some few other Meridians its Axis and Poles are coincident with those of the Firmament The stone may be justly compared to a Planet which as it doth in some stations of the Heaven seem to be eccentrical in others concentrical so this may be termed eccentrick or concentrick or rather conpolar and expolar It s greatest expolarity or declination from the Poles of the Firmament is by Mariners deprehended to be extended to seventeen degrees Dr. Gilbert makes them up 23. that is within 30 min. equal to the greatest declination of the Poles of the Zodiack but he omits the proof It s Center is the body of the stone about which the steames move round like the Wings of a Mill do rowl about their Axeltree It s polar circles may be conceived to be those that describe the distance of the Poles of the stone from those of the Firmament and of the Air. The AEquator is the middle circle imagined to divide the Orbe of the steams into two equal parts viz. of North and South It acquires a new Meridian in as many places as its Poles vary in their declination or ascension It s Horizon is the Circle equally dividing its upper Hemisphaere from the lower Next we will propose certain Theoremes of the Compass Needle 1. The Mariners Needle if gently rubbed against the Magnete throughout its length and especially about both the points doth imitate the nature of it particularly of attraction and of inclining towards the North and South 2. If the Needle be touched throughout its whole length it doth tend Northwards and Southwards with more force than if only rubbed at one end or point 3. The Needle being only touched at the South end will only in the Meridional plage incline towards the South and if at the North point it inclineth to the North in the Septentrional parts 4. The Needle being rubbed about the middle doth incline towards the North and South although very weakly and slowly IX These Theorems together with the foregoing ones we shall instantly endeavour to demonstrate You must observe that the motion of the emanating fumes of the Magnete is from East to West and from West to East and consequently its Poles or immoveable points must be North and South as you may more plainly understand by this Scheme where a is mark for the South Pole of the streames and b for the North γ for East and δ for the West That the Magnete moves circularly in the manner aforesaid is evidenced by its circular attraction for small pieces of Steel being placed about it are all obliquely attracted and forced to it and not directly which is an undoubted sign of the stones circular motion 2. These Effluvia issuing forth in great fumes are through a superabundance protruded into small bodies of steames which through an overforcing impulse of the air do as it were reverberate move back again but circularly towards the stone like as we see thick smoaks do in a Chimney still reserving their naturall motion from East to West Wherefore it is through their circular motion that Steel is impelled to them obliquely and through their reverberating impulse it is forced directly to the body of the Loadstone Likewise the extreme part of the Compass Needle being impregnated with the steames of the Magnete which in the foresaid manner affecting a circular motion from East to West make choice of the extreme point of the Needle N for one of its Poles viz. its North Pole which necessarily must remain immoveable and look towards the North supposing its motion to be from East to West But if those steames were rowled from South to North as Cartesius imagined then the Needle would constantly be shaken by a motion tending upwards and downwards which it is not To the contrary we see that the said Needle is very inclinable to move Eastward and Westward if but lightly toucht because of the steams moving from East to West and from VVest to East for the motion of the Needle excited by a conquassation moves circularly in raising it self and moving towards the East and thence depressing it self and returning to the VVest 3. How can it be rationally conceived that these steames should rowl from South to North since they cannot move the Needle that waies it being fastned at the middle 4. Hence you may be resolved why the Needle being only toucht at one extremity doth tend Northwards with a greater force because its rowling requiring a freedom of circulating Eastward and Westward fixes the point Northerly as being one of its Poles Besides this motion obversing about its extremity urgeth a greater force upon the whole Needle because there it and all other bodies viz. at the extremity are the weakest and least potent to resist Likewise the same Needle being affricted at its Southerly part in Southern Regions Verges to the South because of the Southern Pole of the air as that of the North point to the North in Northerly Countries because of its imitating the North Pole of the air But if touched about the middle its Vergency is the same although with less force because the weight of the Needle doth most resist the impulse of the Magnetical effluvia at its centrical parts Next for the 〈◊〉 〈◊〉 〈◊〉 〈◊〉 〈◊〉 to wit
extended bodies wherein many knobs seem to be unequally coagulated through the unequal proportion of the mixture of the vapours even so are these evaporations coagulated into long large bodies within which again other coagulations are effected of unequal proportions rising like so many knobs of various magnitudes which constitute the fixed Stars well deserving the Epithete of being fixed or fastned in those vast igneous clouds We diduct hence 1. That the fixed Stars are smaller than the Planets because their matter is the overplus of the Planets 2. That they were formed after the Planets because their matter must be arrived to the first Region before the subtiler parts could appel to the second Region for the matter of others 3. That the difference between the loose and fixed Stars is no other than that these latter consist of a more compact flame than the others and thence we may also collect them to be more durable V. But to make pursuit of the manner of ventilation of the Stars The fiery minims striking down vehemently upon them because they are screwed up more and more by the continual access of new coagulations impelled into the said Stars must necessarily be intended in their force upon them for to recover their place and continuation These then striking from all sides through those Celestial mixt bodies do expell shake down and effuse continually great showers of those torrid minims consisting of condensed fire which are accelerated likewise in their descent through the depression of the air These as they pass do heat the air especially in the lower Region because of the density of the clouds and air staying their beams And 2. Because of their reflection from the earth These fiery showers do scarce reach any farther than the temperate Zones Where they rain down perpendicularly there they leave marks of their heat where obliquely there of warmth only but the air within the Polars is not sensible of so much as their warmth These showers do fall down sometimes in a greater confluence than others whence they cast a greater heat which happens through their meeting and being united with more aerial matter or igneous clouds or else through want of shelter under dense clouds in the air or thirdly by uniting their showers with those of other Planets Hence we may observe That the Sun is the hottest body in the Heavens and therefore the loosest and the softest 2. That the Moon and the other Stars consist of a less soft consistency 3. That the fixed Stars as they do heat but little so they dissolve but little and therefore must be of a yet less soft consistency 4. That the fiery clouds being supposed globous and therefore profound do harbour many invisible lights whereof some do happen sometimes to be detruded out of their seat downwards that is towards the earth through the continuated and exuperant force of the superiour parts of the Element of fire This is seldom observed but in the lower Region of the fire because that Element doth use its greatest force there as being near to the place of strife for its Center and most pincht there by the obtruded igneous clouds These new appearing Lights do sometimes keep within sight for eight or ten Months some longer others shorter and afterwards disappear again whence they come under the notion of Comets agreeing in nothing with them except in their disappearing after a certain times lustre The cause of their disappearance I impute to the bearing up of the air upwards by the inferiour fiery rayes and carrying those dislocated Stars out of sight again where they are included within a dense igneous cloud 5. New Stars are oft generated within the bulk of the foresaid clouds whose smalness and close inclusion doth render them invisible Others again are dissolved through being over-powered by the force of the fiery Element 6. The Galaxia or milky-way is nothing but a great number of small dusky lights or inequalities coagulated out of the grosser part of the peregrin Elements of the lower igneous Region VI. Lastly Like as you see that the Element of water which naturally consisteth of the greatest thickness is reduced to that tenuity through such a great proportion of air and that the air is from the greatest tenuity incrassated through such a quantity of water and earth into clouds throughout its whole body even the same we must imagine of fire viz. that it is reduced from the greatest rarity to a condensation and attenuation into large igneous clouds throughout its body through the vast admixture of air somewhat incrassated and condensed These clouds in the lower Region are diducted and separated into many thick and profound ones in the second Region into those of a great tenuity but more cohering Thus we have briefly exposed to your view the commerce of fire with the other Elements and for your better understanding have caused this Scheme to be inserted where you have the universal flames striking downwards for a Center whereas after the first knock it flamed upwards in the Chaos because it moved from its own Center The proportions of fire and air to both the other Elements although not very exactly cut according to my Copy yet comes near to it The Stars are there represented according to their several Regions wherein they are seated The motion of the heavens is likewise there exhibited as we have demonstrated it in the preceding Paragraphs All which with many others insisted upon in this and the subsequent Chapter you have here plainly proposed CHAP. XXII Of the Motion of the Element of fire 1. Where the Poles of the Heavens are 2. The Opinions of Ptolomy and Tycho rejected 3. That the Planets move freely and loosely and why the fixed Stars are moved so uniformly 4. The Suns retrograde motion unfolded and the cause of it 5. How the Ecliptick AEquator and the Zodiack were first found out 6. The manner of the fiery Heavens their ventilation 7. Whence it is that the Sun moves swifter through the Austrinal Mediety and slower through the Boreal How the Sun happens to measure a larger fiery Tract at some seasons in the same time than at others 8. Whence the difference of the Suns greatest declination in the time of Hipparchus Ptolomy and of this our age happens 9. An undoubted and exact way of Calculating the natural end of the World The manner of the Worlds dissolution The same proved also by the holy Scriptures The prevention of a Calumny I. I have formerly discoursed upon the motion of the Heavens from East to West assigning the violent detention from their Center for the cause of it I shall repeat nothing more of it than put you in mind that nothing can move circularly except upon two immoveable points which are therefore named the Poles from sustaining their body The immobility which we observe in this our Hemisphere near the Bear Stars perswades us to take it for the North or Arctick Pole to which the South