sill JOHN LUBEQCK ON THE HABITS OF ANTS: 241 



Fig. 3.- 



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

 B, paper b;'idge. C, glass tray with larvas, its first position ; and D its posi- 

 tion when shifted. 1, 2, 3, 4, thin white lines indicating the comparatively 

 straight routes. 5, thick white line, and 6, dotted line showing tortuous path* 

 when glass had been altered in position. The arrows indicate direetions. 

 travelled. 



experienced in finding her way. Again the dotted sinuous wliite- 

 line (6) shows the course adopted on a subsequent journey. 



Exp. 4. — I then again varied the experiment as follows : — I 

 placed the larvae in a small china cup on the top of the pencil, 

 which thus formed a column 7-|- inches high. The cross line close 

 to the arrows (fig. 4) is as before, the base of the paper bridge 

 going to the nest. C shows the position of the penny on which 

 the pencil is supported. The dotted white lines 1, 2, 3, 4 show 

 the routes of a marked ant on four successive journeys from 

 the nest to the base of the pencil. I then moved the pencil 

 G inches to D, and the two following routes are marked 5 and 

 (i. In one of them, 5 (tliick white line), the ant found a stray 



