56 LORANDE LOSS WOODRUFF. 



Endomixis occurred as soon as the culture was started and 

 recurred at the usual intervals. The animal was not studied 

 cytologically during the I4th five-day period so that endomixis 

 is not indicated by an E in this period on the chart, but from 

 the character of the curve there can be little doubt that an 

 examination of stained specimens would have revealed it. 



In a word, then, the data from every culture of Paramacium 

 aurelia (isolated from as diverse localities as Ohio and Germany) 

 which we have studied prove beyond doubt, I believe, that endo- 

 mixis is a normal periodic phenomenon which occurs in all races 

 of Paramcecium aurelia. 



