( 6i ) 
▼arious bodies of the Univerfe *. *S?'<»''>"wbat is meant by this 
Here he takes occafion to difcourfe ^l^t^l:^,!^:; 
largely of the nature of fi;'^, the bet- any, how fimpie foever ic 
ter to evince. How thAt deferverh to be [^^^^omffi ^elfe^" And 
counted a Principle of Natural Bodies, wbat,if'iSsVrtlr!bere^atlM 
after he had affirmedjthat Acids^ which Elementary ftioM be all con- 
hetnaketh to be Fiery Subftances, as "^^^^l^^ 
they are thedomicil ofSeeds^ by their to it by Mr. Boyh, Sce his 
motion and coagulating power do di- Book of the Origin of Forms 
verfify the Common Elementary Wa- / ^ ^ 
ter into thofe various Bodies , of which this world is made 
up. 
Fire then, according to him, is a mojl ftvifi Motion of a VoUttl 
mdSu/j?h»r'f the Motion of particles being the F^r^^ of Fire^ 
and the VoJatil acid parts the Matter that's moved. Where he 
niaketh a d igreffion to fhew the Inebriating power of Acids^ and 
how effefiual Mealies are toretund and mortifie that vertue. 
Which done,he proceeds to elucidate further the nature of Fire 
fromOylesand Fats,and tomake itout by Experiments , thai 
the matter of the Flame of burning Oyles are their Acid parti- 
cles; foras muchasOyles prepar'd by evaporating Spirit of 
wine from them, or by abftraftingthcm from quick lime, or by 
diftilling them even from bricks , do not flame fo much as they 
would dootherwife^ which way of preparing Oyles he con- 
ceives to confift in nothing but the deft rufiion of the Acid par- 
ticles thereof: Obferving further; that Candles made of Mutton- 
Suet burn away much fooner than thofe made of other Suet, by 
reafon of the abundance of acid particles in the fame,far exceed- : 
ing thofe in other Kinds of fat,^r. 
Having difpatch't this argumentjhe goes on to prove moreful- 
\y \ Firfi ^i\)it iht Seeds of things are ha bour'd in {oiTitAcidor 
other, more or lefs manifef? : Secondly^ that all bodies are from 
Water coagulated into varioa<? Species's by Seeds. Where he in- 
fers, that that Seminal Acid of Fats being confum'd by F^ames^ 
the remainder, now depnved of that Acid, is refolved into Ele- 
mentary water, and infenfib'y diffipated mto vapours ; as the a- 
queous parts of ihe moft reflified Spirit of wine, being put into 
flame , fly away together \^ith the Spirit in vapor. Where he 
takes no fmall pains to demonftrate^ {as his Exfreffion is) the Aci- 
dity of Flame ; and withal to Cv. w, that in all Ijvflammable bo- 
dies 
