E900]; 
Jads, particularly oyl of Vitriol, aay^ oyl is cour 
tained ; he challenges him to give Demonftration. 
He demands further, fince he declares all heat to 
depend on bodies, upon the fcore of their being oyly/ 
that he will ftiew him an experiment, how toproduGe^ 
heat, with the mixture of any oyl and watery as Mr,' 
has often done with Adds and water. 
Mr. J^nkel refutes at large, his experiment about the 
oyl of Sulphur 3 urging, that he did not perform his o-f 
peration truly, but left his oyl of Turpentine at the bot- 
tom of the Retort , which is miftaken for the oyl of 
Sulphur, as he may eafily difcover by drawing off more 
of the remaining oyl, by which means, he leaves a kind 
of black Earth, and fuch as gives no oyl , and may have 
hisformer weight of Sulphur again. 
The adverfary Dr- Voight^ proceeds to lay down feVe- 
rall Pofitions. 
1. That oyl of Vitriol is the moft fixt Acid^ and gives 
more heat, then fpirit of Wine whilft flaming. 
2. Thatfixt bodies are only refpedliuely fo.. 
3. That Acids^ may by repeated diftillations , bp 
brought to fuch a degree of fubtlety {1 jup^ofe he means 
volatility,) as fpirit of Wine. 
4. Any furmife about an ^^^^/^2^/wfignifiesno- 
thing, for even that may be eaiily parted. 
All ^ai^ are volatile, becaule they yielda ftrong 
fcent, which comes from their Volatile fait. 
Now fince we can find no inflammable Acidin the 
World, we may properly infer, fpirit of Wine to be no 
Acid, hQC^Xifc it burns, and takes fire . He concludes 
with a definition of Acidum. ^uod Acidum fit Sal fiuore 
fotitumy Fimhabens aftrin^endi coagula^di, 
Mr. Kun\el \w his anfwer grants the firfl; Pofition.To 
the fecond he gives a check, blaming his.not diftinguifb- 
ing betwixt the -*^^^W«i^^^mM/;2^r^fe^^ Vegetahilk^ The 
' . next Pofi.tion he denyes abfolutly. The i ouryh f ofition 
he 
