Analyfis of the Air. 227 



above z z the furface of the water, was 

 equal to 2024 cubick inches. The quantity 

 of air which was abforbed by the burning 

 Match was 198 cubick inches, equal to A 

 part of the whole air in the veffel. 



I made the fame Experiment in a leffer 

 veffel z z a a (Fig. 35.) which contained 

 but 594. cubick inches of air, in which 150 

 cubick inches were abforbed, i. e. full % 

 part of the whole air in the receiver : So 

 that tho' more air is abforbed by burning 

 Matches in large veffels, where they burn 

 longeft, than in fmall ones, yet more air* in 

 proportion to the bulk of the veffel, is ab- 

 forbed in fmall than in large veffels : If a 

 frelh Match were lighted, and put into this 

 infeded air? tho J it would not burn f part 

 of the time that the former Match burnt 

 in frefh untainted air ? yet it would abforb 

 near as much air in that fhort time 5 and it 

 was the fame with Candles. 



Experiment CIV. 



Equal quantities of filings of Iron and 



Britnftone, when let fall on a hot Iron on 



the pedeftal under the inverted glafs zzaa* 



Q^z (Fig. 35-) 



