386 C. H. TURNER 



netting, to the wooden piece at the top. After resting a few 

 seconds, it moved leftwards a short distance and then turned 

 and passed downward. On reaching the shadow, it reascended 

 the netting, through the sunhght, to the top. Then, after 

 moving towards the right for a short distance, it turned and 

 crawled down the sunny netting until it reached the lower 

 shadow; then, turning, it passed diagonally left upwards for 

 a short distance and rested in the sunlight. At 11.38 a. m., 

 the bee was basking in the sunlight, on the side of the cage 

 remote from the lantern, and cleaning its body. 



Experiment 20. — At 11.38 a. m., the cage was rotated, as 

 gently as possible, through an angle of 180 degrees. This placed 

 the bee in the lighted patch on the lantern side of the cage. 



Immediately the bee moved upward across the netting, through 

 the light and the shadow, to the wooden cross-piece at the top. 

 Then, turning, it moved downwards. Just before reaching 

 the lighted patch, it turned and moved upwards to the wood 

 and then leftwards to the left wall of the cage and up that w^all 

 to where it joined the top of the cage. Along the edge of this 

 wall the bee moved towards the side of the cage that was remote 

 from the lantern. Except for a short distance at the beginning 

 of her meanderings, all of these movements were made in the 

 shadow. 



Experiment 21. — .4^ ii-39 ci- m., I held a inud cell, upon which 

 a bee was resting, in the beam of light from the projecting lantern. 



For a few seconds the bee roamed about on the nest. Then 

 it mounted my hand and moved about, at random, on it. All 

 of these movements were performed in the bright light; but 

 without any definite relation to the direction of the rays of light. 

 Indeed, the bee crossed the rays in every possible direction. 



Experiment 22. — At 11.43 ^- ^^^-^ ^^^ ^^^^ filter was removed 

 from the lantern so as to permit the heat as well as the light of the 

 lantern to impinge upon the bee that was resting on my finger. 



The bee, which was a female, remained on my finger for eight 

 minutes, and would have remained longer had I not dislodged her. 



At 11.50 A. M., a bee climbed into the lighted patch on the 

 lantern-side of the cage and remained there until the light was 

 extinguished, five minutes later. 



