252 DIFFICULTY IN 



or no difficulty in finding her way back. Her pathway, 

 however (No. 5), which is traced on the paper, shows 

 that she was completely abroad ; and, after all, she got 

 back t^ the nest by a different route. 

 Fig. 13. 



Routes followed in experiment No. 3, as mentioned in text 



B, paper bridge leading to nest, o, glass tray with larvse, ia its 

 Stat position ; and D in its position wiien shifted. 1, 2, 3, i, thin 

 white lines indicating tb? comparatively straight routes. 6, thick 

 white line, and 6, dotted ' ne showing tortuous paths when glass had 

 1 altered in position The arrows indicate directions travelled. 



