292 EXPERIMENTS WITH 



paper. After she had made three more visits, always 

 to the blue paper, I transposed them again, and she 

 again followed the colour, though the honey was left 

 in the same place. The following day I was not able to 

 watch her ; but on the 14th at 



7.29 A.M. she returned to the honey on the blue paper. 



At 7.31 she left. 



7.44 7.41 



7.56 



I then again transposed the papers. At 8.5 she 

 returned to the old place, and was just going to 

 alight ; but observing the change of colours, without a 

 moment's hesitation darted off to the blue. No one 

 who saw her at that moment could have entertained 

 the slightest doubt about her perceiving the difference 

 between the two colours. At 8.9 she went. 



8.13 she returned to the blue ; at 8.16 she left. 

 8.20 8.23 



8.26 8.30 



Transposed the colours again. 



At 8.35 she returned to the blue, and at 8.39 left. 

 8.44 8.47 



8.50 8.53 



Transposed the colours again. 



8.57 she returned again to the blue ; 9. 



9. 4 9. 7 



9.12 9.15 



