PHYSICAL AND LITERARY. 33 c 



as foon as the folution had entered the 

 ventricle of the heart, that organ was ren- 

 dered incapable of expelling its contentsj 

 and, in much lefs than one minute there- 

 after, became fo intirely paralytic, as not 

 to make the leaft contraclion on the 

 ftrongeft irritation, whether applied to its 

 outer or inner part ; whilft, at the fame 

 time, the extremities were agitated incef- 

 fantly with conviilfions, which continued 

 for about three quarters of an hour, gra- 

 dually becoming more and more feeble ; 

 nor was the animal able to perform any 

 voluntary motion during this whole pe- 

 riod. 



(T'wo Trials,^ 



I next tied a ligature fall around the 

 beginning of the aorta, and, farther from 

 the heart than the ligature, 1 opened the 

 aorta, and fixed a pipe into it, through 

 which I poured the folution of opium in- 

 to all the large arteries of the body. In 

 lefs than a quarter of a minute after this, 

 all the mufcles were convulfed fo as to 



render 



