382 C. H. TURNER 



bee crawled up from the shaded portion into the brightlv illu- 

 minated patch on the lantern-side of the cage, roamed about for 

 a short time and then rested quietly thereon. At 2.08 p. m., 

 another bee did the same thing. At 2.15 p. m., these two bees 

 were still resting quietly, in the bright patch, on the lantern- 

 side of the cage. On the window-cide of the cage, one bee was 

 clinging to the netting. No other bees were in sight. 



Experiment ii. — At 2.18 p. m., the light of the lantern was 

 so adjusted as to illuminate all of the lantern-side of the cage and 

 all of the side opposite. The floor was not illuminated by the beam. 



Five minutes later one bee was resting in the bright patch 

 on the netting of the lantern-side of the cage. No other bees 

 were in sight. 



SERIES III (MAY 4, 1911) 



Experiment 12. — At 9.45 a. m., the cage ,which had been in 

 a well lighted room, with a temperature of jS degrees F., for several 

 hours, was placed in a sunny windoiv in such a position that the 

 window-side of the cage, the side remote from the window, the top 

 and a portion of the bottom of the cage were in the sunlight. 



At the beginning of this experiment, no bees were on any 

 of the sides of the cage, one was roaming about the floor; no 

 others were in sight. Mud cells containing bees were in the 

 sunlight on the floor. 



At 9.56 A. M., one male bee was in the sunshine on the window- 

 side of the cage. No other bees were in sight. At 9.57 a. m., 

 one female bee and two males were in the sunlight on the window- 

 side of the cage. These bees would repeatedly fly against 

 the netting on the window-side of the cage, and, when knocked 

 backwards by the impact, repeat the act. At 9.59 a. m., seven 

 bees, male and female, were either hovering before or resting 

 upon the sunny netting on the window-side of the cage; two 

 bees were resting in the sunlight on the floor. No other bees 

 were in sight. At 10.00 a. m., eleven bees, male and female, 

 were either hovering before or resting on the sunny netting 

 on the window-side of the cage. No other bees were in sight. 



Experiment 13. — At 10.02 a. m., the cage was rotated, as 

 gently as possible, through an angle of 90 degrees, thus placing 

 the side upon which the bees were resting in the shade. 



