I 



Analyfis of the Air, 



169 



Experiment LIII. 



Half a cubick inch of Oyfterjhell, or 266 

 trains diftillcd in the iron retort, generated 

 162 cubick inches, gi 46 grains, which is a 

 little more than £ part of the weight of the 



ftcll. 





■ • 



1! 



Experiment LIV. 



Two grains of Thojphorns eafily melted 

 at fome diflance from the fire, flamed and 

 filled the retort with white fumes, it ab- 

 forbed three cubick inches of Air. A like 

 quantity of Thofphorus, fired in a large re- 

 ceiver ( Fig. 35.) expanded into a fpace equal 

 to fixty cubick inches, and abforbed 2 8 cu- 

 bick inches of Air : When 3 grains of Thof- 

 fhorus were weighed, foon after it was 

 burnt, it had loft half a grain of its weight ; 

 but when two grains of Thofphorus was 

 weighed, fome hours after it was burnt, 

 having run more per deliquium by abforbing 

 the moifture of the Air, it had incrcafed a 

 grain in weight. 



Expe- 





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