■•; 



■I 



■ ■■ 



ifct 



-:;r: 



»* " * * r 



:- 



(4 



i 



Analyfa of the Air. 1 1 7 



emitted that quantity of air 5 and in two 

 hours more it again reforbed what had been 

 juft before emitted. The day following it 

 continued abforbing, in all 12 cubick in- 

 ches: And then remained ftationary for 15 

 or zo hours. The third day it had again re- 

 mitted or generated 3 or 4 cubick inches 

 of air, and thence continued ftationary for 



five or fix days. 



A like quantity of filings of Iron, and oil 

 of Vitriol, made no fcnfiblc ferment, and 

 generated a very little air s but upon pouring 

 in an equal quantity of water, it generated 

 in 21 days 43 cubick inches of air $ and in 

 3 or 4 days more it reforbed 3 cubick in- 

 ches of air ; when the weather turned warmer 

 it was generated again, which was again re- 

 forbed when it grew cool. 



■ 

 ■ 



Jtfa Of a cubick inch of filings of Iron, 



and a cubick inch of oil of Vitriol, with 



three times its quantity of Water, generated 



108 cubick inches of air. 



Filings of Iron, with Jpirit of Nitre, 



either with an equal quantity of water, or 



without water, abforbed air, but moft with* 

 out water. 



ith Of 







I 



