on the Living Sijstem. 45 



EXPERIMENT 18. 



With jEther. 



The heart of another rabbit was exposed, 

 and whilst contracting with great force. 



Hours. Minutes. 



2. 10. Ten drops of sether with five of 

 water were poured on : encrease 

 of contraction followed, but irot 

 so observable, as on the appJica- 

 tion of spirits of wine, or opiuii^. 



2. 14. The pericardium was taken off and 

 the same quantity applied again, 

 an encreased force of contractions 

 was evident. The heart con- 

 tracts much slower than after the 

 second application of opium or 

 spirits of wine, to the afore- 

 mentioned animals. 



'2. 17. A small perforation was made -in the 

 heart, 30 drops of aether were 

 thrown in ; motion ceased in- 

 stantly, and no contractions could 

 be excited by mechanically ' sti- 

 mulating the heart. 



EXPERIMENT 19. 



Ten drops of the spiritus volatilis aromaticus 

 were applied upon anotlier heart, in a similar 





