2.54 Analyfis of the Air. 



in the great crural artery near the groin^ 

 which place an afliftant held his finger on 

 moft part of the time; but the languid pulfe 

 was quickly accelerated, fo as to beat faft $ 

 foon after I dilated the lungs much, by pref- 

 ling hard upon the bladder, efpecially when 

 the motion of the lungs was promoted by 

 prefling alternately the Abdomen and the 

 bladder, whereby both the contraction and 

 dilatation of the lungs was increafed. 



And I could by this means roufe the lan- 

 guid pulfe whenever I pleafed, not only at 

 the end of every 5 minutes, when more air 

 was blown into the bladder from a man's 

 lungs , but alfo towards the end of the 5 

 minutes, when the air was fulleft of fumes. 



At the end of the hour, I intended to try 

 whether I could by the fame means have 

 kept the Dog alive fome time longer, when 

 the bladder was filled with the fumes of bur- 

 ning Brimfione : But being obliged to ceafe 

 for a little time from prefling the air into 

 his lungs, while matters were preparing for 

 this additional Experiment, in the mean time 

 the Dog dyed, which might otherwife have 

 lived longer, if I had continued to force the 

 air into his lungs, 



Now, 



