_ 
improved Eudiometrical Apparatus, by Dr. Hare. 49 
of the flexible pipe, a communication with the barometer 
into the receiver. In this way, suppose 100 measures, by the 
va 
barometer gage, taken from the eudiometer. The valve 
a 
the absorption known. It is not necessary that the appara- 
tus should remain upon the air pump plate during the whole 
ceiver from the air pump, to any part of the laboratory, 
where it may be convenient to connect it with the eudiome- 
ter. 
; 
VOL. XII.——-NOs 1. i 4 
‘ 
