Analyjis of the Air. 1 7 j 



Experiment LIL 



A dram of volatile fait of fal armoniack 

 foon diftilled over with a gentle heat; but 

 tho* the expanlion in the receiver was double 

 that of heated Air alone, yet no Air was ge- 

 nerated, but two and an half cubick inches 

 were abforbed. 



Experiment LIII. 



Half a cubick inch of OyJler-fiell y or 266 

 grains, diftilled in the iron retort, generated 

 162 cubick inches, or 46 grains, which is a 

 litcle more than £ part of the weight of 

 the ihell. 



Experiment LIV. 



Two grains of Phofphorus eafily melted 

 at fome diftance from the fire, flamed and 

 filled the retort with white fumes ; it ab- 

 forbed three cubick inches of Air. A like 

 quantity of Phofphorus, fired in a large re- 

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

 to fixty cubick inches, and abforbed 28 cu- 

 bick inches of Air: When three grains of 

 Phofphorus were weighed, foon after it was 

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

 but when two grains of Phofphorus were 



weighed, 



