2'>2 DIFFICULTY IN 



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

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

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

 l.uick to the nest by a different route. 



Fitr. 13. 



Routes fullowL'd in exfjcrifiu-nt No. '2, as mentionod in tcxi 



L!, paper bridge leading to nest, c, glass tray with larvie, ivi it.s 

 'itst position ; and D in it- position when shifted. 1, 2, 3, 4, tliin 

 wliite lines indicating the comparatively straight routes. 5, thick 

 i\hite line, and (">, dotted line showing tortuous paths when glass had 

 •w*!! altero<l in posi*>ion. Tlu; arrows indicate directions travelled. 



