on the Living System. 41 



Houn. Minute*. 



10. 21. The ventricles had ceased to move, 

 the auricles yet exhibited a feeble 

 vibratory motion. 

 31. The left auricle was without mo- 

 tion : In the right auricle a tre- 

 mulous motion was observable, 

 once or twice in a minute. Ten 

 drops of a solution of opium which 

 contained 1 grain in 16 of water, 

 were poured gently upon the heart. 

 Several encreased contractions of 

 the ventricles followed in quick 

 succession. 



35. The heart was again motionless in 



every part. 



36. The solution was poured on again 



in the same quantity, but pro- 

 duced only one contraction, in 

 the right auricle. 

 10. 37. The pericardium was stripped off: 

 a feeble motio« was excited by 

 this cause, in the right auricle. 

 When the heart was again at rest, 

 the solution was a third time ap- 

 plied; two or three quick con 

 tractions followed. 



