DISTINGUISHING COLOURS. 299 



At 11.28 she came back to the honey on blue paper. 

 I transposed them again. 



At 11.41 „ „ „ 



11.56 „ „ „ „ 



l^. 8 „ „ „ „ 



At 12.17 she came back to the honey on blue paper. 

 1 now put green paper again instead of white, and 

 transj)osed the places. 



At 12.27 she came back to the honey on blue paper. 

 I transposed them again. 

 At 12.40 



12.50 „ „ „ „ 



^' o „ ,, ,, „ 



^•'^ 5> )? JJ ?5 



At 1.25 she came back to the honey on blue 

 paper, and then to the green. I transposed them 

 again. 



At 1 .40 she came back to the honey on blue paper. 

 I transposed them again. 



At 1.47 she came back to the honey on green paper. 

 „ 1.57 she came back to the honey on blue paper, 

 and then to the green. 



At 2. 6 she came back to the honey on blue paper. 

 9 17 



The following day I accustomed this bee to green 

 [)aper. She made 63 visits (beginning at 7.47 and 

 ending at 6.44), of which 50 were to honey on green 

 paper. 



The following day, August 23, she began work, — 



