Ip2 Analyfis of the Air. 
In my diftillation of 443 grains of Tat- 
tar in Exper. 73. there remained but 42 
grains of fcoria, which is little more thart 
-V 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 Lemerfs and my 
diftillation together, we fhall find, that there 
remained in this 3 2 ounces of fcoria, and 
in the ounce that was loft, (which was 
doubtlcfs moft of it air) fubftance enough to 
account for the great quantity of air, which 
in Exper. 73. was raifed from Tartar ; efpe- 
cially, if we take into the account the pro- 
portion of air, which was contained in the 
oil, which was tV part of the whole Tar- 
tar , for there is much air in oil. 
The bodies which I diftillcd in this man- 
ner (Fig. 3 8.) were Horn, calculus humanus , 
Oyfter-fhell, Oak, Muftard-feed, Indian- 
wheat, Peafe, Tobacco, oil of Anifeed, oil 
of Olives, Honey, Wax, Sugar, Amber, Coal, 
Earth, Walton Mineral, Sea-falt, Salt-petre, 
Tartar, Sal Tartar , Lead, Minium. The 
greateft part of the air obtained from all 
which bodies was very permanent, except 
what the air of Tartar and calculus humanus 
loft in (landing fcveral days. Particularly that 
. from 
