252, Analyfis of the Air. 



with a force fufficient to keep the lungs 

 pretty much dilated. As the Mercury fub- 

 fided in the gage, I repeated the fudlion for 

 a quarter of an hour, till a good part of the 

 air in the bladder was either drawn thro' 

 the fubftance of the lungs into the Thorax^ 

 or had loft its elafticity. When I preffed the 

 bladder, the Mercury fubfided the fafter 5 the 

 Dog was all the while alive, and would 

 probably have lived much longer, if the 

 Experiment had been continued j as is likely 

 from the following Experiment, viz. 



Experiment CXIV, 



I tyed a middle fized Dog down alive on 

 a table, and having layed bare his windpipe, 

 I cut it afunder juft below the Larynx, and 

 fixed faft to it the fmall end of a common 

 foffet 5 the other end of the foffet had a 

 large bladder tyed to it, which contained 

 i6z cubick inches i and to the other end of 

 the bladder was tyed the great end of ano- 

 ther foffet, whofe orifice was covered with 

 a valve, which opened inward, fo as to ad- 

 mit any air that was blown into the bladder, 

 but none could return that way; yet for fur- 

 ther 



