IN FINDING THEIR WAY 



25ft 



^rva at E, with which she returned to the nest, without 

 finding the pencil at all. On the following journey, 

 shown in the fine white zigzag line (6), she found tbe 

 pencil at last, but, as will be seen, only after many 

 rneanderings. 



Fig. 15 



Diagram of complex path traversed in experiment 4. 



A, first position of pencil. B, second position of pencil. 1, 2, 

 si raight lines of two tracks of the observed ants. 3, winding narrow 

 white line, showing course pursued by the same ant before arriving 

 at li. when the position of the pencil was unchanged. 



Experiment 4.— T then repeated the observation 



