22 4 Anahjfis of the Air. 



The like quantity of frefli 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 115 cu- 

 bick inches. 



A quart of unflaked Lime* left for 44 

 days, to flaken gradually by it felf without 

 any mixture, abforbed no air. 



March 3d, A cubick inch of powdered 

 Belemnitis, taken from a Qtaik pit, and an 

 equal quantity of oil of Vitriol, 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. 



Powdered Belemnitis and Limon juice ge- 

 nerated plenty of air too j as did alfo the 

 Star Stone, Laps Jtidaicus, and Selenitis 

 with oil of Vitriol. 



Experiment CI. 



Gravelled, that is well burnt, Wood-afhes, 

 decrepitated Salt, and Colcothar of Vitriol, 

 plac'd feverally under the inverted glafs zz a a 



(Fig- 35.) 



