Z 24 Anahyfts of the Air. 
The like quantity of frefh Lime and Wa- 
ter abforbed in 3 days 10 .cubick inches 
of air. 
' Two cubick inches of Lime^ and an equal 
quantity of Sal Ammoniac abforbed 1 1 5 cu- 
bick inches. ' 
A quart of unllakcd Lime^ left for 44 
days, to (laken gradually by it felf without 
any mixture, abforbed no air. 
March 3d, A cubick inch of powdered 
Belemnitisy taken from a Challz pit, and an 
equal quantity of oil of Vitrioh generated 
in 5 minutes 3 5 cubick inches of air. March 
5th, it had generated 70 more. March 6th, 
it being a hard froft, it reforbed 12 cubick 
inches, fo it generated in all 128 inches, and 
.reforbed 12. . : . i 
Powdered Belemnitis and Limon juice ge- 
nerated plenty of air too 3 as did alfo the 
Star Stone, Lapis judaiens, and Selenitis 
with oil of Vitriol. 
•Experiment CI. 
Gravelled^ that is well burnt, Wood-ajhes, 
decrepitated Salt, and Colcothar of Vitriol, 
plac'd feverally under the inverted glafs zzaa 
(Fig- 35-) 
