2S8 C. H. TURNER. 



carefully the neighborhood of the nest, for the purpose of forming 

 memory pictures of the topographical environment of the 

 burrow. This assumption that the exploration of the vicinity of 

 the nest is for the purpose of forming memory pictures is sup- 

 ported by the fact that such explorations are always made before 

 beginning trips that immediately follow some pronounced change 

 in the topography of the environment [Ex. i, 3, 4, 13, IV., V.], 

 and not when such changes have not been made [Ex. 2, 5, 6, 7, 

 10, 11]. Slight changes in the topographical environment of 

 the burrow may, at times, effectively disturb the bee on its 

 homeward journey, and yet not be sufficiently pronounced to 

 cause the departing bee to pause and reexplore the surroundings 

 of the nest [Ex. I., II., III.]. 



Haines Normal School, 



Augusta, Ga., September, i, 1908. 



