C 409 ) 
feparate the parts of Milk; which, he faith, he hath alfo often 
feen done by purging Gaii inco Milk, 
Having difpatchi: thefe particulars , he proceeds to (hew 
fecondljhy divers Inftances , that many effeds are commonly 
afcnbedto Acids and Alcalys, which are not due to them, 
becaufe they are either not ac all to be found in thofe bodies^ 
whence fuchefFefts proceed, ornot in that quantity, which is 
neceflTarytomafiierandfubdue the power of the other parts of 
theConcret. 
Laft ly, to evince, that there , is at leaft a principie in 
Goocrets, that hath as great a power to aft , as thofe two he 
inftances in the Amalgamation of Gold andother Mectals , that 
is performed ¥/ith Quick-filver , which is fo mixed wiih them 
pr minima^xhdX they are changed together inco an unftuous mafs ; 
whereupon, the Mercury being feparated again , either by paf- 
fing it through Leather, or by diftillation , or by flowers of 
Sulphur kindled, the Mectals appear again in the form of a 
very fubtile calx. But now, that there fliould proceed from 
Mercury, or any Acid ingredient thereof, a calcining power, 
the known efFe'S of Acids being Corrofion , our Author cannot 
affenc to : Efpecially fince, as he affirms , Mercury highly re6i« 
fied and freed from allits acidity , retains notwithftanding its 
former amalgamating and corroding yertue. 
What this third, ingredient of Concrets fliould be, our Au- 
thor thinks difficult to determine; heoffersonly to call it the 
Sweet and Inflammable Principle in Combuftible bodies: Yec 
would not beunderftood to efleem it a Carholick principle, 
nor to exclude a fourth or more Principles. All which he con-^ 
eludes witha difcourfe tending to evince,rhat the Inflammabi- 
lity of Bodies depends not upon their Acidity. 
H h h 
JV, Zyiro 
