26o 



A. M. Banta 



TABLE II— Continued. 

 Lamp changed to section-i end of tank 



* General movement at sections i and 2. 



.j-A recoil from section-6 end, as at this time more individuals were moving from than toward 

 the section-6 end of tank. 



i Some individuals st:ll wandering about. 



seemed fairly well settled at 3:15 p.m., an hour and thirty-two 

 minutes after the experiment was begun. All but one were in 

 the negative half of the tank and 18 were in Section i, while the 

 mean average position was 1.41; a change in a negative direction 

 of 2.45 since the beginning of the experiment. 



At this juncture the light was changed to the opposite end of 

 the tank and a record of positions made as soon as possible after 

 the change. The animals began to respond to the light stimulus 



