IN FINDING THEIR WAY. 257 
rate, guides itself but little by sight. This, which I 
had not at all anticipated, seems to follow from the 
fact that after the pencil and tray of larve had been 
removed but a short distance to the right or left, the 
Fig. 17. 
© 
WD fe 
LE a 
“| 
| 
| 
a 
Another tracing showing a similar experiment. 1, 2, 3, the direct 
broad lines towards a; and 4, the complicated track made when 
reservoir of larve was removed to B. 
ants on their journey to the shifted object travelled 
very often backwards and forwards and around the spot 
where the coveted object first stood. Then they would 
retrace their steps towards the nest, wander hither and 
