N 361 
\vhich point it remained stationary for many days. 
The apparatus was then immersed in a trough of wa- 
ter, and the alkaline solution was withdrawn under 
water. A quantity of the residual air was then repeat- 
edly washed in lime water, to remove all suspicion of 
the existence of carbonic acid in it. Five different 
portions of this air were next passed into separate 
glass tubes, so as to occupy about half their volume, 
and each tube was then filled with oxymuriatic acid, 
gas, obtained from oxy muriate of potassa and muria- 
tic acid. The tubes were then closely corked under 
water, and kept inverted in that fluid, and exposed 
to the light of day. In 24 hours, one of the tubes 
was uncorked under water, and the water immediate- 
ly rose into it to a considerable height. A portion 
of the remaining gas was then passed into another 
tube, rilled with pure lime water, but it produced in 
it no discolouration. After two or three transmis- 
sions, however, carbonic acid was rendered manifest 
by the whitish film which formed on the sides of 
the tube, and by the white threads of carbonate 
which, after a few minutes, fell down through the 
body of the liquid. The gases in the other tubes 
were examined in succession, and all afforded the 
same phenomena, when transmitted through lime 
water. 
673. In farther confirmation of these facts we 
placed portions of meat in a jar containing equal 
parts of atmospheric air and hydrogen, and also in 
another jar of pure hydrogen gas. Both jars were 
inverted over water, and remained in their respective 
positions for ten days. The residual gases were then 
washed in lime water, till they ceased to produce 
