Hence We may Inferre, That Fire is not an Universal Analyzer of all Mixt Bodies, since of Metals and Minerals, wherein Chymists have most Exercis'd Themselves, there Appear scarce Any which they are able to Analyze by Fire, Nay, from which they can Unquestionably Separate so much as any One of their Hypostatical Principles; Which may well Appear no small Disparagement as well to their _Hypothesis_ as to their Pretensions. It will also remain True, notwithstanding the Objection, That there may be Other Wayes than the wonted _Analysis_ by Fire, to Separate from a Compound Body Substances as Homogeneneous [Transcriber's Note: Homogeneous] as those that Chymists Scruple not to Reckon among their _Tria Prima_ (as some of them, for Brevity Sake, call their Three Principles.) And it Appears, That by Convenient Additaments such Substances may be Separated by the Help of the Fire, as could not be so by the Fire alone: Witness the Sulphur of Antimony. And Lastly, I must Represent, That since it appears too that the Fire is but One of the Instruments that must be Employ'd in the Resolution of Bodies, We may Reasonably Challenge the Liberty of doing Two Things. For when ever any _Menstruum_ or other Additament is Employ'd, together with the Fire to Obtain a Sulphur or a Salt from a Body, We may well take the Freedom to Examine, whether or no That _Menstruum_ do barely Help to Separate the Principle Obtain'd by It, or whether there Intervene not a Coalition of the Parts of the Body Wrought upon with Those of the _Menstruum_, whereby the Produc'd Concrete may be Judg'd to Result from the Union of Both. And it will be farther Allowable for Us to Consider, how far any Substance, Separated by the Help of such Additaments, Ought to pass for one of the _Tria Prima_; since by One Way of Handling the same Mixt Body it may according to the Nature of the Additaments, and the Method of Working upon it, be made to Afford differing Substances from those Obtainable from it by other Additaments, and another Method, nay and (as may appear by what I Formerly told You about Tartar) Differing from any of the Substances into which a Concrete is Divisible by the Fire without Additaments, though perhaps those Additaments do not, as Ingredients, enter the Composition of the Obtained Body, but only Diversify the Operation of the Fire upon the Concrete; and though that Concrete by the Fire alone may be Divided into a Number of Differing Substances, as Great as any of the Chymists that I have met with teach us that of the Elements to be. And having said thus much (sayes _Carneades_) to the Objection likely to be Propos'd by some Chymists, I am now to Examine that which I Foresee will be Confidently press'd by Divers Peripateticks, who, to Prove Fire to be the true Analyzer of Bodies, will Plead, That it is the very Definition of Heat given by _Aristotle_, and Generally Received, _Congregare Homogenea, & Heterogenea Segregare_, to Assemble Things of a Resembling, and