268 C. H. TURNER. 



At this stage, I removed all of the discs from the field except the 

 one used in this experiment. 



At intervals of ten minutes, I made two additional visits to 

 this disc. On the first trip I found ten bees on the disc; on the 

 second trip, I found eight. 



On leaving for home all of the discs were removed from the field. 



Series III. (July 14, 7:30 A.M.) 



Apparatus. The cornucopias used in this series of experiments 

 were made in the following manner: A piece of cardboard, 

 colored on both sides, was cut the shape and dimensions shown 

 in Fig. i. It was folded along the dotted lines and the flaps 



FIG. i. 



fastened where they lapped. About one centimeter of the apex 

 of the cone was bent over and fastened. When finished, each 

 cornucopia was nine centimeters long, with an elliptical lip 

 six centimeters wide and three centimeters high. The lip was 

 used for attaching the cornucopia to some support. Incidentally 

 it furnished a platform for the bees. Some of the cornucopias 

 were red and some were green. 



EXPERIMENT 19. In the weeds that were the seat of the experi- 

 ments of yesterday, several cornucopias were arranged at dijlcroit 



