266 



EXPERIMENTS WITH 



deal. Experiment 3, &6 well as some of tliose recorded 

 previously, seemed to show that ants were little guided 

 in such cases by the position of surrounding objects. 

 However, I was anxious to test this. 



7. Accordingly I took a round box and placed it 

 upside down on the table, having cut two niches, one 

 at each side, where it lay on the paper path, so as to 

 afford a passage for the ants, as in the experiments 

 recorded in my previous paper ; but on this occasion I 

 left the lid on, cutting, however, a hole through which 

 I could watch the result. In this case, therefore, the 

 surrounding objects, i.e. the walls of the box, turned 

 round with the table. Then, as before, when the ants 

 were between i and d, I turned the table half round. 

 The results were as follows: — 



In this case, then, only 11 ants turned; and as 4 

 of them were together, it is possible that 3 simply 



