6 Analyfis of the Air. 
pours than in an uncompreflcd ftate ; but I 
did not perceive any fenfible difference. 
Lemery, in his courfe of chymiftry, />. 592. 
obtained in the diftillation of 48 ounces of 
Tartar^ 4 ounces of phlegm, s of fpirits, 
3 of oil, and 32 of Scoria, i. e. two thirds 
of the whole, fo one ounce was loft in the 
operation. 
In my diftillation of 443 grains of 7 '^r- 
tar in Exper. 73- there remained but 42 
grains of Scoria, which is little more than 
A of the Tartar ; and in this remainder, 
there was by Exper. 74 Air, for there was 
Sal Tartar, it running per deliquium. 
Whence by comparing Lemery*s and my 
diftillation together, we (hall find, that there 
remained in this 32 ounces of Scoria, and 
in the ounce that was loft, ( which was 
doubtlefs moft of it air) fubftance enough 
to account for the great quantity of air, which 
in Exper. 73. was raifed from Tartars efpe- 
dally, if we take into the account the pro- 
portion of air, which was contained in the 
oil, which was A of the whole Tar- 
tar, for there is much air in oil. 
The bodies which I diftilled in this man- 
ner (Fig. 38.) were Horn, calculus humanus, 
Oyfter- 
