294 EVIDENT POWEE OF 



or three bees paid twenty-one visits to the orange and 

 yellow, and only four to all the other slips of glass. I 

 then moved the glass, after which, out of thirty-tvFO 

 nsits, twenty-two were to the orange &nd yellow. 

 This was due, I believe, to the bee having been placed 

 on the orange at the beginning of the experiment. 

 I do not attribute it to any preference for the 

 orange or yellow ; indeed, I shall presently give reasons 

 foT considering that blue' is the favourite colour of 

 bees. 



October 6.— I had ranged my colours in a line, with 

 the blue at one end. It was a cold morning, and only 

 one bee came. She had been several times the pre- 

 ceding day, generally to the honey which was on the 

 blue paper. This day also she came to the blue ; I 

 moved the blue gradually along the line one stage 

 every half-hour, during which time she paid fifteen 

 visits to the honey, in every case going to that which 

 was on the blue paper. 



Again, on September 13 at 11 a.m., I brought up a 

 bee from one of my hives ; at 1 1 .40 she returned to 

 honey which I had put on a slip of glass on green papei 

 She returned at 11.51. And again at 

 12. 1 



„ 12.13 



„ 12.22 



„ 12.33 



„ 12.46 



12.58 



