Amlyjis of the Air. 205 
Inches diameter within fide, and five inches 
deep. I poured into it half an inch depth 
of Mercury $ then I put a little coloured 
honey at x, into the bottom of the glafs* 
tube z X, which was fealed at the top. I fet 
this tube in the iron cylinder n to fave 
it from breaking by the fwelling of the Peafe. 
The pot being filled with Peafe and water , 
I put a leathern collar between the mouth 
and lid of the pot, which were both ground 
even, and then prefled the lid hard down 
in a Cyder-prefs : The third day I opened 
the pot and found all the water imbibed by 
the Peafe 5 the Honey was forced up the 
glafs-tube by the Mercury to (for fo far 
the glafs was dawbed) by which means I 
found the preffure had been equal to two 
atmofpheres and and the diameter of the 
pot being 2 j inches, its area was fix 
fquare inches, whence the dilating force of 
the air againft the lid of the pot was equal 
to 189 pounds. 
And that the expanfive force of new ge- 
nerated air is vaftly fuperior to the power 
with which it afted on the Mercury in thefe 
two Experiments is plain from the force 
with which fermenting Muft will burft the 
I ftrongeft 
