( ? 6 ° )

so many Hours lain Ignitod in the Fire; comes over, by Dißiffdtion, veryhighly Impregnated with the s»me biery Particles ; which is obvious to anyonethat has used to make Experiments with it. For JSlitre it seif has noDiflolving or Heating Ouality, but is a great Cooler, and scarce can be rec-koned amongif Actds ; but aster it comer out of the bire in the form of »Spirit, it Tearsin piecesalmost all Metals, and brings them to a fort of Fu-sion, as AftaalFire does; it Diflolves Aiiimals and Vegetables, and Mine-rals ; and has many Effects of F tre. Theretore from an Union of these twovery biery Spirit s results a much greater Qnantity oflgmous Matter,

That Fire is very apt to Incorporate with Fluids, and even such aS havehad bur a small Communication with it, an Experiment, which I formerlyexhibited at a Meeting of the R. Society , inakes probable.

Wetook of Spirit of Wine, that was Highly Retttfy'd, a Wine Glasi halffüll, and placed a Tender Weather Glass or Thermometer in the Glasi, andthen put a Spoonful ofWater to it, this immediately IVarmed the Liquor,and made the Weathei Glass Aseend two Inches jx least: The Liquor in theWeather Glass sübsided as the other Mixture grew Cold. I made it alsoSensible to the Touch by filling the Palm of the then Treßdeni *s Hand withSpirit of Witte, and putting a small quantity of Cold IVater into the sameHand, which made it sensibly Warm his Hand, as well as others that madethe Tryah But from this Spirit, which is too Volatile to endure muchCommunicätion with the bire, you may expect only a Mild Tepid Heat .I am apt to believe, that there is scarce any thing which lies long in theFire, but isapt to retain some Igneous Particles; which does appear to be soin all Fixe J Salti, in Isuick Lime, and more particularly in Iron. lf youtakea Bar of Iron, though of an iooYearsold, and Fi/eoffabout a Pound of ir,and then you do Mix and Imbibe rhesc Filings with a due proportion ofWater, enough to make the whole just moist; the Fire, which all this whilelay concealed in the Iron, being more ditpos’d to enter into the b Ittid, doesby thtsc means Warm the Whole Maß. The Irrn gained this Heating Qua-lity by büßen in those Fierce btres which firsf scparated the Metal from theOre : For it is not in the Nature of the CVebesore Fußon to Emic any Heat ,as I have found by mixing Water with it. There are a great many otherInstances which make it very plain, that Fire will add both to the Bulk andWeight of Bodies; but these Affect Solid Bodies more manifestly. The Ef-fect it seif produced byour Vlttid, does necesiärily Prove the Inherent bieryParticles so have caused the Aecenfion.

And this leads us to consider the other part ofour Matter, which in Con-junction with the Comp-und Spirit causes this Aecenfion and Exploßon,

But here it will not be amifi to premise a Ditfincti n of Oyls into Veget a-hlt, Animal, and Mineral ; having made some Experiments with all these,but most of all with Vegttahle ; for which reason we Subdivide again theVegetahle into those mnde by Epreßien, and those made by Dißiüation: Andof those made by PifiiUati n we diftinguilh those that are made out of theSeeds from those that are made out of the Trmks, or Cortex, or Roots, orany other part of the Vegetable. We further obscrvc a Differcnce betwixt

those