Amlyfts of the Air. ipf 
Experiment LII. 
A dram of volatile fait of fal armoniack , 
foon diftilled over with a gentle heat ; but 
tho’ the expanfion in the receiver was double 
that of heated Air alone, yet no Air was 
generated, but two and an half cubick inches 
were abforbed. 
Experiment LIII. 
Half a cubick inch of Oyfter-Jbell, or 2 66 
grains diftilled in the iron retort, generated 
1 <52 cubick inches, or 46 grains, which is a 
little more than i part of the weight of 
the fhell. 
Experiment LIV. 
Two grains of Thofphorus 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 Thofphorus, 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 3 grains of c Phof- 
phorus were weighed, foon after it was 
burnt, it had loft half a grain of its weight 5 
but when two grains of Tbofphorm were 
weighed. 
