Improved Eudiometrical Apparatus, by Dr. Hare. 34 
The gas thus included may be transferred to any vessel, in- 
verted over mercury or water, by depressing the orifice of 
the bulb below that of the vessel, and moving the lever, L, 
so as to open the aperture, A, in the chamber, and the ori- 
fice of the bulb, simultaneously. 
bell, with the gas within. In this gage any light liquid will 
answer, which is not absorbent of the gas. In the case of 
ammonia, liquid ammonia may be used; in the case of mu- 
riatic gas, the liquid acid. In article twenty-three,* a bell 
glass is represented, furnished with a gage of the kind 
which I have used, and which was described in the account 
of the mercurial sliding rod eudiometer, in this Journal for 
October, 1825.7 
The density of the gas will be in equilibrio with that of 
the air, when the bell is supported at such a height, as to 
cause. the liquid in each tube of the gage to be in the same 
vel, : pi ger eget 
* Of the engravings and descriptions of apparatus used in the chemical 
course of the University of Pennsylvania. : 
t See also an account of an improved mercarial sliding rod eudiometer 
#o this number. 
