lo8 Analyfts of the Air. 
ftrength and keeping at a diftancc, fd a:$ 
fometimes to take up above a million of 
times more fpaec than they did before in 
the form of a denfe body , which vafl: 
contradion and expanfion feems unintel- 
ligible, by feigning the particles of Air 
to be fpringy and ramous, or rolled up 
‘‘ like hoops, or by any other means than 
by a[ repulfive power. " The truth of 
which is further confirmed by thefe Expe- 
riments, which fhew the great quantity 
of air emitted from fermenting bodies % 
which not only proves the great force with 
which the parts of thofe bodies mull be 
diftendedj but Ihews alfo how very much 
the particles of air muft be coiled up in 
that ftate, if they arc, as hasf been fuppofed, 
fpringy and ramous. 
To inftance in the cafe of the pounded 
Apples which generated above 48 times 
their bulk of Air ; this air, when in the Ap- 
ples, mull be comprelTed into lefs than a 
forty eighth part of the fpace it takes up, 
when freed from them, and it will con- 
fequcntly be 48 times more denfe; and 
fmee the force of comprelTed air is propor- 
tional to its denfity, that force which com. 
prefles 
