90 On the Ejects of Opium 



," The thermometer was 69 in the stomach 

 " of an eel. When exposed to a great degree 

 " of cold, the thermometer fell to 31: The 

 " animal was removed and recovered.'* 



*^ The thermometer was 44 in a snail : In 

 " the cold vessel it was reduc|ed to 31: after 

 " some time the thermometer rose to 32 ; the 

 " animal froze and died.". 



From these we conclude that the more abun- 

 dant is the excitability, the greater is the re- 

 duction of the temperature v> hich the animal 

 can bear rv it /tout having the actions of life' 

 destroyed. 



It was observed, conclusion the Sd, page* 

 4Tth, that the capacity of an animal's body to 

 receive impressions was diminished by the ap- 

 plication of stimulants. W^ next proceeded 

 to enquire what. would be the etlect of the 

 application of a sedative power. 



EXPERIMENT 50. 



A mi-ddJe-si^ed rabbit's pulse beating 252; 

 was put into a vessel whose temperature was 

 S0\ 



Hours. Minutes. 



8. — Animal appears uneasy from the 

 ^eoldV 

 10. Pulse 264, but diminished in force.' 



