EXPERIMENTS WITH 



7 inches high (in fact, a hat-box) for the flat paper, 

 cutting two small holes at / and gr, so that the ants 

 passing from the nest to the food went through the box 

 entering at / and coming out at g. The box was fixed 



Fig. 25. 



o 



at d, so that it might turn easily. I then, when they 

 had got to know their way, turned the box round as 

 soon as an ant had entered it, but in every case the 



\ 



Fig 26. 



.0 



ant turned round too, thus retaining her direction. I 



then varied the experiment as shown in Figs. 25 and 26. 



I replaced the white disk of paper, but put the 



food e at the middle of the board. When the ant had 



