The sane difference in susceptibility between the 

 nucleated and non-nucleated cells was found when they 

 were kept for 20 hours after the operation before treat- 

 ment with cyanide. 



Whether we can conclude that the rate of metabolism 

 is increased by removal of the nucleus is doubtful. It is 

 possible that removal of the nucleus decreases the resistance 

 to cyanides for some other reason. But at any rate, the 

 evidence such as it is opposes the view that respiration 

 and metabolism are depressed by removal of the nucleus. 



(60) 



