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A30490 The theory of the earth containing an account of the original of the earth, and of all the general changes which it hath already undergone, or is to undergo till the consummation of all things. Burnet, Thomas, 1635?-1715. 1697 (1697) Wing B5953; ESTC R25316 460,367 444

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same World that our first fore-fathers did nor scarce to be the same race of Men. Our life now is so short and vain as if we came into the World only to see it and leave it by that time we begin to understand our selves a little and to know where we are and how to act our part we must leave the stage and give place to others as meer Novices as we were our selves at our first entrance And this short life is imploy'd in a great measure to preserve our selves from necessity or diseases or injuries of the Air or other inconveniencies to make one Man easie ten must work and do drudgery The Body takes up so much time we have little leisure for Contemplation or to cultivate the mind The Earth doth not yield us food but with much labour and industry and what was her free-will offering before or an easie liberality can scarce now be extorted from her Neither are the Heavens more favourable sometimes in one extreme sometimes in another The Air often impure or infectious and for a great part of the year Nature her self seems to be sick or dead To this vanity the external Creation is made subject as well as Mankind and so must continue till the restitution of all things Can we imagine in those happy Times and Places we are treating of that things stood in this same posture are these the fruits of the Golden Age and of Paradise or consistent with their happiness And the remedies of these evils must be so universal you cannot give them to one place or Region of the Earth but all must participate For these are things that flow from the course of the Heavens or such general Causes as extend at once to all Nature If there was a perpetual Spring and perpetual Aequinox in Paradise there was at the same time a perpetual Aequinox all the Earth over unless you place Paradise in the middle of the Torrid Zone So also the long-lives of the Ante-diluvians was an universal Effect and must have had an universal Cause 'T is true in some single parts or Regions of the present Earth the Inhabitants live generally longer than in others but do not approach in any measure the Age of their Ante-diluvian fore-fathers and that degree of longaevity which they have above the rest they owe to the calmness and tranquility of their Heavens and Air which is but an imperfect participation of that cause which was once Universal and had its effect throughout the whole Earth And as to the fertility of this Earth though in some spots it be eminently more fruitful than in others and more delicious yet that of the first Earth was a fertility of another kind being spontaneous and extending to the production of Animals which cannot be without a favourable concourse from the Heavens also Thus much in general We will now go over those three forementioned Characters more distinctly to show by their unsuitableness to the present state of Nature that neither the whole Earth as it is now nor any part of it could be Paradisiacal The perpetual Spring which belong'd to the Golden Age and to Paradise is an happiness this present Earth cannot pretend to nor is capable of unless we could transfer the Sun from the Ecliptick to the Aequator or which is as easie perswade the Earth to change its posture to the Sun If Archimedes had found a place to plant his Machines in for removing of the Earth all that I should have desir'd of him would have been only to have given it an heave at one end and set it a little to rights again with the Sun that we might have enjoy'd the comfort of a perpetual Spring which we have lost by its dislocation ever since the Deluge And there being nothing more indispensably necessary to a Paradisiacal state than this unity and equality of Seasons where that cannot be 't is in vain to seek for the rest of Paradise The spontaneous fruitfulness of the ground was a thing peculiar to the primigenial soil which was so temper'd as made it more luxuriant at that time than it could ever be afterwards and as that rich temperament was spent so by degrees it grew less fertile The Origin or production of Animals out of the Earth depended not only upon this vital constitution of the soil at first but also upon such a posture and aspect of the Heavens as favour'd or at least permitted Nature to make her best works out of this prepar'd matter and better than could be made in that manner after the Flood Noah we see had orders given him to preserve the Races of living Creatures in his Ark when the Old World was destroy'd which is an argument to me that Providence foresaw that the Earth would not be capable to produce them under its new form and that not only for want of fitness in the soil but because of the diversity of Seasons which were then to take place whereby Nature would be disturb'd in her work and the subject to be wrought upon would not continue long enough in the same due temper But this part of the second Character concerning the Original of Animals deserves to be further examin'd and explain'd The first principles of Life must be tender and ductile that they may yield to all the motions and gentle touches of Nature otherwise it is not possible that they should be wrought with that curiosity and drawn into all those little fine threds and textures that we see and admire in some parts of the Bodies of Animals And as the matter must be so constituted at first so it must be kept in a due temper till the work be finisht without any excess of heat or cold and accordingly we see that Nature hath made provision in all sorts of Creatures whether Oviparous or Viviparous that the first rudiments of Life should be preserv'd from all injuries of the Air and kept in a moderate warmth Eggs are enclos'd in a Shell or Film and must be cherish'd with an equal gentle heat to begin formation and continue it otherwise the work miscarries And in Viviparous Creatures the materials of life are safely lodg'd in the Females womb and conserv'd in a fit temperature 'twixt heat and cold while the Causes that Providence hath imploy'd are busie at work fashioning and placing and joyning the parts in that due order which so wonderful a Fabrick requires Let us now compare these things with the birth of Animals in the new-made World when they first rose out of the Earth to see what provision could be made there for their safety and nourishment while they were a making and when newly made And though we take all advantages we can and suppose both the Heavens and the Earth favourable a fit soil and a warm and constant temper of the Air all will be little enough to make this way of production feasible or probable But if we suppose there was then the same inconstancy of the Heavens
course of the Vapours which cool'd the open Plains and made the weather temperate as well as fair But we have spoken enough in other places upon this subject of the Air and the Heavens Let us now descend to the Earth The Earth was divided into two Hemispheres separated by the Torrid Zone which at that time was uninhabitable and utterly unpassable so as the two Hemispheres made two distinct Worlds which so far as we can judge had no manner of commerce or communication one with another The Southern Hemisphere the Ancients call'd Antichthon the Opposite Earth or the Other World And this name and notion remain'd long after the reason of it had c●ast Just as the Torrid Zone was generally accounted uninhabitable by the Ancients even in their time because it really had been so once and the Tradition remain'd uncorrected when the causes were taken away namely when the Earth had chang'd its posture to the Sun after the Deluge This may be lookt upon as the first division of that Primaval Earth into two Hemispheres naturally sever'd and disunited But it was also divided into five Zones two Frigid two Temperate and the Torrid betwixt them And this distinction of the Globe into ●●ve Zones I think did properly belong to that Original Earth and Primitive Geography and improperly and by translation only to the present For all the Zones of our Earth are habitable and their distinctions are in a manner but imaginary not fixt by Nature whereas in that Earth where the Rivers fail'd and the Regions became uninhabitable by reason of driness and heat there begun the Torrid Zone and where the Regions became uninhabitable by reason of cold and moisture there begun the Frigid Zone and these being determin'd they became bounds on either side to the Temperate But all this was alter'd when the posture of the Earth was chang'd and chang'd for that very purpose as some of the Ancients have said That the uninhabitable parts of the Earth might become habitable Yet though there was so much of the first Earth uninhabitable there remain'd as much to be inhabited as we have now for the Sea since the breaking up of the Abyss hath taken away half of the Earth from us a great part whereof was to them good Land Besides We are not to suppose that the Torrid Zone was of that extent we make it now twenty three degrees and more on either side of the Aequator these bounds are set only by the Tropicks and the Tropicks by the obliquity of the course of the Sun or of the posture of the Earth which was not in that World Where the Rivers stopt there the Torrid Zone would begin but the Sun was directly perpendicular to no part of it but the middle How the Rivers flow'd in the first Earth we have before explain'd sufficiently and what parts the Rivers did not reach were turn'd into Sands and Desarts by the heat of the Sun for I cannot easily imagine that the Sandy Desarts of the Earth were made so at first immediately and from the beginning of the World from what causes should that be and to what purpose in that age But in those Tracts of the Earth that were not refresht with Rivers and moisture which cement the parts the ground would moulder and crumble into little pieces and then those pieces by the heat of the Sun were bak'd into Stone And this would come to pass chiefly in the hot and scorch'd Regions of the Earth though it might happen sometimes where there was not that extremity of heat if by any chance a place wanted Rivers and Water to keep the Earth in due temper but those Sands would not be so early or ancient as the other As for greater loose Stones and rough Pebbles there were none in that Earth Deucalion and Pyrrha when the Deluge was over found new made Stones to cast behind their backs the bones of their mother Earth which then were broken in pieces in that great ruine As for Plants and Trees we cannot imagine but that they must needs abound in the Primitive Earth seeing it was so well water'd and had a soil so fruitful A new unlabour'd soil replenistht with the Seeds of all Vegetables and a warm Sun that would call upon Nature early for her First-Fruits to be offer'd up at the beginning of her course Nature 〈◊〉 a wild luxuriancy at first which humane industry by degrees gave form and order to The Waters flow'd with a constant and gentle Current and were easily led which way the Inhabitants had a mind for their use or for their pleasure and shady Trees which grow best in most and warm Countries grac'd the Banks of their Rivers or Canals But that which was the beauty and crown of all was their perpetual Spring the Fields always green the Flowers always fresh and the Trees always cover'd with Leaves and Fruit But we have occasionally spoken of these things in several places and may do again hereafter and therefore need not inlarge upon them here As for Subterraneous things Metals and Minerals I believe they had none in the first Earth and the happier they no Gold nor Silver nor courser Metals The use of these is either imaginary or in such works as by the constitution of their World they had little occasion for And Minerals are either for Medicine which they had no need of further than Herbs or for Materials to certain Arts which were not then in use or were suppli'd by other ways These Subterraneous things Metals and metallick Minerals are Factitious not Original bodies coaeval with the Earth but are made in process of time after long preparations and concoctions by the action of the Sun within the bowels of the Earth And if the Stamina or principles of them ris●e from the lower Regions that lie under the Abyss as I am apt to think they do 〈◊〉 doth not seem probable that they could be drawn through such a mass of Waters or that the heat of the Sun could on a sudden penetrate so deep and be able to loosen them and raise them into the exteriour Earth And as the first Age of the World was call'd Golden though it knew not what Gold was so the following Ages had their names from several Metals which lay then asleep in the dark and deep womb of Nature and see not the Sun till many Years and Ages afterwards Having run through the several Regions of Nature from top to bottom from the Heavens to the lower parts of the Earth and made some observations upon their order in the Ante-diluvian World Let us now look upon Man and other living Creatures that make the Superiour and Animate part of Nature We have observ'd and sufficiently spoken to that difference betwixt the Men of the old World and those of the present in point of Longaevity and given the reasons of it but we must not imagine that this long life was peculiar to Man all other Animals had their
answer to that difficulty Two suppos'd causes of the Conflagration by the Sun 's drawing nearer to the Earth or the Earth's throwing out the central fire examin'd and rejected WE have now made our way clear to the principal point The Causes of the Conflagration How the Heavens and the Earth will be set on fire what materials are prepar'd or what train of Causes for that purpose The Ancients who have kept us company pretty well thus far here quite desert us They deal more in Conclusions than Causes as is usual in all Traditional Learning And the Stoicks themselves who inculcate so much the doctrine of the Conflagration and make the strength of it such as to dissolve the Earth into a fiery Chaos are yet very short and superficial in their explications how this shall come to pass The latent seeds of fire they say shall every where be let loose and the Element will prevail over all the rest and transform every thing into its own nature But these are general things that give little satisfaction to inquisitive Persons Neither do the modern Authors that treat of the same subject relieve us in this particular They are willing to suppose the Conflagration a superficial effect that so they may excuse themselves the trouble of enquiring after causes 'T is no doubt in a sort supernatural and so the Deluge was yet Moses sets down the Causes of the Deluge the rains from above and the disruption of the Abyss So there must be treasures of fire provided against that day by whose eruption this second Deluge will be brought upon the Earth To state the case fairly we must first represent the difficulty of setting the Earth on Fire Tie the knot before we loose it that so we may the better judge whether the Causes that shall be brought into view may be sufficient to overcome so great opposition The difficulty no doubt will be chiefly from the great quantity of Water that is about our Globe whereby Nature seems to have made provision against any invasion by Fire and secur'd us from that enemy more than any other We see half of the Surface of the Earth cover'd with the Seas whose Chanel is of a vast depth and capacity Besides innumerable Rivers great and small that water the face of the dry Land and drench it with perpetual moisture Then within the bowels of the Earth there are Store-houses of subterraneous Waters which are as a reserve in case the Ocean and the Rivers should be overcome Neither is Water our only security for the hard Rocks and stony Mountains which no Fire can bite upon are set in long ranges upon the Continents and Islands and must needs give a stop to the progress of that furious Enemy in case he should attack us Lastly The Earth it self is not combustible in all its parts 'T is not every Soyl that is fit fewel for the Fire Clay and Mire and such like Soyls will rather choak and stifle it than help it on its way By these means one would think the Body of the Earth secur'd and tho' there may be partial fires or inu●●lations of fire here and there in particular regions yet there cannot be an Universal Fire throughout the Earth At least one would hope for a safe retreat towards the Poles where there is nothing but Snow and Ice and bitter cold These regions sure are in no danger to be burnt whatsoever becomes of the other climates of the Earth This being the state and condition of the present Earth one would not imagine by these preparations 't was ever intended that it should perish by an Universal Fire But such is often the method of Providence that the exteriour face of things looks one way and the design lies another till at length touching a Spring as it were at a certain time all those affairs change posture and aspect and shew us which way Providence inclines We must therefore suppose before the Conflagration begins there will be dispositions and preparatives suitable to so great a work and all antiquity sacred and prophane does so far concur with us as to admit and suppose that a great drought will precede and an extraordinary heat and driness of the Air to usher in this fiery doom And these being things which often happen in a course of Nature we cannot disallow such easie preparations when Providence intends so great a consequence The Heavens will be shut up and the Clouds yield no rain and by this with an immoderate heat in the Air the Springs of Water will become dry the Earth chap'd and parch'd and the Woods and Trees made ready fewel for the Fire We have instances in History that there have been droughts and heats of this Nature to that degree that the Woods and Forests have taken fire and the outward Turf and Surface of the Earth without any other cause than the driness of the Season and the vehemency of the Sun And which is more considerable the Springs and Fountains being dry'd up the greater Rivers have been sensibly lessen'd and the lesser quite emptied and exhal'd These things which happen frequently in particular Countreys and Climates may at an appointed time by the disposition of Providence be more universal throughout the Earth and have the same effects every where that we see by experience they have had in certain places And by this means we may conceive it as feisible to set the whole Earth on fire in some little space of time as to burn up this or that Countrey after a great drought But I mean this with exception still to the main Body of the Sea which will indeed receive a greater diminution from these Causes than we easily imagine but the final consumption of it will depend upon other reasons whereof we must give an account in the following Chapters As to the Mountains and Rocks their lofty heads will sink when the Earthquakes begin to roar at the beginning of the Conflagration as we shall see hereafter And as to the Earth it self 't is true there are several sorts of Earth that are not proper fewel for fire but those Soils that are not so immediately as clayey Soils and such like may by the strength of Fire be converted into Brick or Stone or Earthen Metal and so melted down and vitrified For in conclusion there is no Terrestrial Body that does not finally yield to the force of Fire and may either be converted into flame incorporated fire or into a liquor more ardent than either of them Lastly As to the Polar Regions which you think will be a safe retreat and inaccessible to the fire 'T is true unless Providence hath laid subterraneous treasures of fire there unknown to us those parts of the Earth will be the last consum'd But it is to be observ'd that the cold of those regions proceeds from the length of their Winter and their distance from the Sun when he is beyond the Aequator and both these causes will be
first occasion'd a fame and belief of their continuance long after they had really ceast This gives an easie account and I think the true cause of that opinion amongst the Ancients generally receiv'd That the Torrid Zone was uninhabitable I say generally receiv'd for not only the Poets both Greek and Latin but their Philosophers Astsonomers and Geographers had the same notion and deliver'd the same doctrine as Aristotle Cleomedes Achilles Tatius Ptolomy Cicero Strabo Mela Pliny Macrobius c. And to speak truth the whole doctrine of the Zones is calculated more properly for the first Earth than for the present for the divisions and bounds of them now are but arbitrary being habitable all over and having no visible distinction whereas they were then determin'd by Nature and the Globe of the Earth was really divided into so many Regions of a very different aspect and quality which would have appear'd at a distance if they had been lookt upon from the Clouds or from the Moon as Iupiter's Belts or as so many Girdles or Swathing-bands about the body of the Earth And so the word imports and so the Ancients use to call them Cinguli and Fasciae But in the present form of the Earth if it was seen at a distance no such distinction would appear in the parts of it nor scarce any other but that of Land and Water and of Mountains and Valleys which are nothing to the purpose of Zones And to add this note further When the Earth lay in this regular form divided into Regions or Walks if I may so call them as this gave occasion of its distinction by Zones so if we might consider all that Earth as a Paradise and Paradise as a Garden for it is always call'd so in Scripture and in Iewish Authors And as this Torrid Zone bare of Grass and Trees made a kind of Gravel-walk in the middle so there was a green Walk on either hand of it made by the temperate Zones and beyond those lay a Canal which water'd the Garden from either side But to return to Antiquity We may add under this Head another observation or doctrine amongst the Ancients strange enough in appearance which yet receives an easie explication from the preceding Theory They say The Poles of the World did once change their situation and were at first in another posture from what they are in now till that inclination happen'd This the ancient Philosophers often make mention of as Anaxagoras Empedocles Diogenes Leucippus Democritus as may be seen in Laertius and in Plutarch and the Stars they say at first were carried about the Earth in a more uniform manner This is no more than what we have observ'd and told you in other words namely That the Earth chang'd its posture at the Deluge and thereby made these seeming changes in the Heavens its Poles before pointed to the Poles of the Ecliptick which now point to the Poles of the Aequator and its Axis is become parallel with that Axis and this is the mystery and interpretation of what they say in other terms this makes the different aspect of the Heavens and of its Poles And I am apt to think that those changes in the course of the Stars which the Ancients sometimes speak of and especially the Aegyptians if they did not proceed from defects in their Calendar had no other Physical account than this And as they say the Poles of the World were in another situation at first so at first they say there was no variety of seasons in the Year as in their Golden Age. Which is very coherent with all the rest and still runs along with the Theory And you may observe that all these things we have instanc'd in hitherto are but links of the same chain in connexion and dependance upon one another When the Primaeval Earth was made out of the Chaos its form and posture was such as of course brought on all those Scenes which Antiquity hath kept the remembrance of though now in another state of Nature they seem very strange especially being disguis'd as some of them are by their odd manner of representing them That the Poles of the World stood once in another posture That the Year had no diversity of Seasons That the Torrid Zone was uninhabitable That the two Hemispheres had no possibility of intercourse and such like These all hang upon the same string or lean one upon another as Stones in the same Building whereof we have by this Theory laid the very foundation bare that you may see what they all stand upon and in what order There is still one remarkable Notion or Doctrine amongst the Ancients which we have not spoken to 't is partly Symbolical and the propriety of the Symbol or of the Application of it hath been little understood 'T is their doctrine of the Mundane Egg or their comparing the World to an Egg and especially in the Original composition of it This seems to be a mean comparison the World and an Egg what proportion or what resemblance betwixt these two things And yet I do not know any Symbolical doctrine or conclusion that hath been so universally entertain'd by the Mystae or Wise and Learned of all Nations as hath been noted before in the fifth Chapter of the First Book and at large in the Latin Treatise 'T is certain that by the World in this similitude they do not mean the Great Universe for that hath neither Figure nor any determinate form of composition and it would be a great vanity and rashness in any one to compare this to an Egg The works of God are immense as his rature is infinite and we cannot make any image or resemblance of either of them but this comparison is to be understood of the Sublunary World or of the Earth And for a general key to Antiquity upon this Argument we may lay this down as a Maxim or Canon That what the Ancients have said concerning the form and figure of the World or concerning the Original of it from a Chaos or about its periods and dissolution are never to be understood of the Great Universe but of our Earth or of this Sublunary and Terr●strial World And this observation being made do but reflect upon our Theory of the Earth the manner of its composition at first and the figure of it being compleated and you will need no other interpreter to understand this mystery We have show'd there that the figure of it when finisht was Oval and the inward form of it was a frame of four Regions encompassing one another where that of Fire lay in the middle like the Yolk and a shell of Earth inclos'd them all This gives a solution so easie and natural and shows such an aptness and elegancy in the representation that one cannot doubt upon a view and compare of circumstances but that we have truly found out the Riddle of the Mundane Egg. Amongst other difficulties arising from the Form
remov'd at the Conflagration For we suppose the Earth will then return to its primitive situation which we have explain'd in the 2d Book of this Theory and will have the Sun always in its Aequator whereby the several Climates of the Earth will have a perpetual Equinox and those under the Poles a perpetual day And therefore all the excess of cold and all the consequences of it will soon be abated However the Earth will not be burnt in one day and those parts of the Earth being uninhabited there is no inconvenience that they should be more slowly consum'd than the rest This is a general answer to the difficulty propos'd about the possibility of the Conflagration and being general only the parts of it must be more fully explain'd and confirm'd in the sequel of this discourse We should now proceed directly to the causes of the Conflagration and show in what manner they do this great execution upon Nature But to be just and impartial in this enquiry we ought first to separate the spurious and pretended Causes from those that are real and genuine to make no false musters nor any show of being stronger than we are and if we can do our work with less force it will be more to our credit as a Victory is more honourable that is gain'd with fewer Men. There are two grand capital Causes which some Authors make use of as the chief Agents in this work the Sun and the Central Fire These two great Incendiaries they say will be let loose upon us at the Conflagration The one drawing nearer to the Earth and the other breaking out of its bowels into these upper regions These are potent Causes indeed more than enough to destroy this Earth if it was a thousand times bigger than it is But for that very reason I suspect they are not the true Causes for God and Nature do not use to employ unnecessary means to bring about their designs Disproportion and over-sufficiency is one sort of false measures and 't is a sign we do not thoroughly understand our work when we put more strength to it than the thing requires Men are forward to call in extraordinary powers to rid their hands of a troublesome argument and so make a short dispatch to save themselves the pains of further enquiries but such methods as they commonly have no proof so they give little satisfaction to an inquisitive mind This supposition of burning the Earth by the Sun drawing nearer and nearer to it seems to be made in imitation of the story of Phaeton who driving the Chariot of the Sun with an unsteddy hand came so near the Earth that he set it on fire But however we will not reject any pretensions without a fair trial Let us examine therefore what grounds they can have for either of these suppositions of the Approximation of the Sun to the Earth or the Eruption of the Central Fire As to the Sun I desire first to be satisfied in present matter of Fact whether by any instrument or observation it hath or can be discover'd that the Sun is nearer to the Earth now than he was in former ages or if by any reasoning or comparing calculations such a conclusion can be made If not this is but an imaginary cause and as easily deny'd as propos'd Astronomers do very little agree in their opinions about the distance of the Sun Ptolomy Albategnius Copernious Ticho Kepler and others more modern differ all in their calculations but not in such a manner or proportion as should make us believe that the Sun comes nearer to the Earth but rather goes further from it For the more modern of them make the distance greater than the more ancient do Kepler says the distance of the Sun from the Earth lies betwixt 700 and 2000 semidiameters of the Earth but Ricciolus makes it betwixt 700 and 7000. And Gottefrid Wendeline hath taken 14656. semidiameters for a middle proportion of the Sun's distance to which Kepler himself came very near in his later years So that you see how groundless our fears are from the approaches of an enemy that rather flies from us if he change posture at all And we have more reason to believe the report of the modern Astronomers than of the ancient in this matter both because the nature of the Heavens and of the celestial Bodies is now better known and also because they have found out better instruments and better methods to make their observations If the Sun and Earth were come nearer to one another either the circle of the Suns diurnal arch would be less and so the day shorter or the Orbit of the Earths annual course would be less and so the Year shor●er Neither of which we have any experience of And those that suppose us in the centre of the World need not be afraid till they see Mercury and Venus in a combustion for they lie betwixt us and danger and the Sun cannot come so readily at us with his fiery darts as at them who stand in his way Lastly this languishing death by the gradual approaches of the Sun and that irreparable ruine of the Earth which at last must follow from it do neither of them agree with that Idea of the Conflagration which the Scripture hath given us for it is to come suddenly and unexpectedly and take us off like a violent Feaver not as a lingring Consumption And the Earth is also so to be destroyed by Fire as not to take away all hopes of a Resurrection or Renovation For we are assur'd by Scripture that there will be new Heavens and a new Earth after these are burnt up But if the Sun should come so near us as to make the heavens pass away with a noise and melt the Elements with fervent heat and destroy the form and all the works of the Earth what hopes or possibility would there be of a Renovation while the Sun continued in this posture He would more and more consume and prey upon the Carcass of the Earth and convert it at length either into an heap of Ashes or a lump of vitrified metal So much for the Sun As to the Central Fire I am very well satisfied it is no imaginary thing All Antiquity hath preserv'd some sacred Monument of it The Vestal fire of the Romans which was so religiously attended The Prytoneia of the Greeks were to the same purpose and dedicated to Vesta and the Pyretheia of the Persians where fire was kept continually by the Magi. These all in my opinion had the same origine and the same signification And tho' I do not know any particular observation that does directly prove or demonstrate that there is such a mass of fire in the middle of the Earth yet the best accounts we have of the generation of a Planet do suppose it and 't is agreeable to the whole Oeconomy of Nature as a fire in the heart which gives life to her motions and productions But however the