280 



WALTER S. HUNTER 



Labyrinth C, (fig. 3), was constructed in order to test kinaes- 

 thetic control in squirrels.^ Hence the dimensions differ from 

 those of labyrinths A and B. Although the alleys are nar- 

 rower— 5 in. wide — and not so high as those of the other mazes, 



Figure 3 — Labyrinth C. E, the entrance box; F, the food box; AA, the remov- 

 able section. 



they caused no marked inconvenience to the birds. There 

 are four cul-de-sacs, s, r, I and 5 respectively. The maze is so 

 constructed that the straightaways may be shortened without 

 disturbing the interrelations of the pathways. 



' The tests referred to occur in some unpublished work by Dr. Yoakum. 



