PHOTIC REACTIONS OF HONEY-BEE 



387 



bee no. 105 (fig. 15) required only fifteen minutes. In bothfigures, 

 each record of the top row is of exactly the same duration as the 

 corresponding one of the lower row, except records 1 and 2 of 

 bee no. 73, which differ by one second. It would be difficult to 



957 



N 



Fig. 15 A pair of determinations of bee no. 105, right eye black, non-directive 

 light. The records are numbered in the order in which they were taken. 



Number 



of 

 record 



1 



3 



5 



24 mc. Light 



+ Degrees 



turned 



1260 

 855 

 1305 



-Degrees 

 turned 



45 

 



90 



Average deflection, +6.74° /cm. 



Number 



of 



record 



2 



967 mc. Light 



+Degrees 

 turned 



1935 

 2430 

 2520 



—Degrees 

 turned 





 

 



Average deflection, +14. 83° /cm. 



d = +8.09° /cm. 



imagine more conclusive results than those afforded by these two 

 bees. 



It might be supposed that animals would be found which would 

 exhibit the opposite of the condition just described. Such, how- 

 ever, was not the case. I failed to find any individuals which 

 continually circled more toward the functional eye in an iUumi- 



