APPENDIX. 311 
or other efTential Oils of Plants, docs in- 
“ ftantly kindle into a great Flame ; this Spi- 
ric is made by diftilling in a reverberatory 
Heat two Pounds of Nitre with one of Oil 
of Vitriol. 
71. Twenty Drops of this Spirit being 
“ mixed in vacuo with a like Qiiantity of 
Oil of Carraways 5 they made a great Ef- 
fervefcence without Flame, and the Heac 
was raifed to two hundred and fixteen De- 
grees : When the inteftine Motion feerned 
to be over, he let Air into the Receiver, on 
which there was a Flame raifed, which 
was foon extinguiflied, by the great Fumes, 
for want of a free Air. Neither did Oil 
“ of Turpentine, Oil of Rofemary, or Oil of 
Annifeed flame in vacuo^ nor when Air was 
‘‘ let in, till a little Oil of Vitriol was added 
which yet did not caufe the Oil of Annifeed 
to flame. 
72. Three Drams of Oil of Vitriol being 
‘‘ mixed with an equal Quantity of Rain 
Water, there was no vifible Emotion, yet 
‘‘ the Heat increafed from forty eight to nine- 
‘‘ ty two Degrees. 
73. Three Drams of Oil of Vitriol, and 
a like Quantity of the diftilled Water of 
X 4 Scurvy- 
