No. 527] COLOR SENSE OF THE HONEY-BEE 677 



transposed. The bee returned to the blue. The bee again 

 left for the hive and I transposed the slides. It returned 

 to the blue. 



When the bee left for the hive, I transposed the slides 

 for the fourth time. The bee returned to the red, which 

 was now in the place occupied by the blue at the time of 

 its previous visit. 



The bee left for the hive, but no change was made in 

 the position of the slides. On its return it again sought 

 the blue, showing that the influence of this color was still 

 dominant, though it now knew from memory as well as 

 from its visual and olfactory senses that honey was to be 

 found on the red. 



A yellow slide was now placed upon the board about 

 seven inches to the left of the blue. The order of the 

 colors was yellow, blue, red, and their distance apart 

 seven inches. The bee returned to the blue. When the 

 bee left, I transposed the yellow and blue so that the order 

 was blue, yellow, red. The bee returned to the blue. On 

 the departure of the bee I again transposed blue and yel- 

 low. The bee returned to the blue. 



When the bee left for the hive, a white slide was intro- 

 duced and the distances between the slides reduced to four 

 and one-half inches. The order of colors was yellow, 

 white, blue, red. The bee on its return flew back and forth 

 several times over the slides, and after hovering in the 

 air for a few moments in hesitation alighted on the white. 



The bee left for the hive, but no change was made in 

 the order of the slides ; it returned to the blue. 



When the bee left, a black slide was substituted for the 

 white one. The order of the slides was yellow, black, 

 blue, red and the distances apart remained as before 

 four and one-half inches. The bee returned to the yellow, 

 but soon left it (perhaps disturbed by a fly) and returned 

 to the blue. No change was made in the order of the 

 slides, and the bee returned to the black. But on its next 

 visit it again sought the blue. 



I now transposed the red and blue, bringing blue to the 



