IV.] 



POWERS OF COMMUNICATION. 



117 



glass. In this case, the friends generally came more or 

 less in sight of one another to the bridge c, and once 

 there, could hardly avoid arriving either at 6 or &'. I 

 therefore modified the experiment as follows. I estab- 

 lished and endowed an ant as before, imprisoning the 

 friends who came with her. When she knew her way 

 thoroughly, I allowed her to return to the nest on her 

 own legs, but as soon as she emerged again I took her 

 up on a slip of paper, and transferred her to the food. 



1 



FIG. 49. 



Under these circumstances, as will be seen, very few 

 ants indeed ever found their way to the food. I began 

 at 5.30, at which time the ant returned to the nest. At 

 5.34 she came out with no less than ten friends, and 

 was then transferred to the food. The others wandered 

 about a little, but by degrees returned to the nest, 

 not one of them finding her way to the food. The 

 first ant took some food, returned, and again came out 

 of the nest at 5.39 with eight friends, when exactly the 

 same happened. She again came out 



