ii% Attalyjis of the Air. 
The like quantity of frelh Lime and Wa- 
ter abforbed in 3 days xo cubiek inches of 
air. 
Two cubick inches of Lime , and an equal 
quantity of Sal Ammoniac abforbed 1 1 5 cu- 
bick inches : The fumes of this mixture are 
therefore doubtlefs very fuffocating. 
A quart of unflaked Lime, left for 44 
days, to flacken gradually by it felf without 
any mixture, abforbed no air. 
March 3d, a cubick inch of powdered 
Belemnitis, taken from a Chalk pit, and an 
equal quantity of oil of Vitriol, generated 
in five minutes 35 cubick inches of air. 
March jth, it had generated 70 more. 
March 6th, it being a hard froft, it reforb- 
ed x 2 cubick inches ; fo it generated in all 
105 inches, and reforbed 12. 
Powdered Belemnitis and Limon juice ge- 
nerated plenty of air too 5 as did alfo the 
Star-Stone , Lapis Judaicus, and Selenitis 
with oil of Vitriol. 
Experiment Cl. 
Gravelled, that is well burnt, Wood-afhts, 
decrepitated Salt, and Colcothar of Vitriol, 
placed feverally under the inverted glafs 
zzaa, (Fig. 35.) increafcd in weight by 
im- 
