2/2 



C. H. TURNER. 



cm. in diameter. The tray was shoved in from the rear until 

 its rear end was just inside of the rear edge of the outer case. 



In constructing the outer case, a piece of cardboard was cut 

 the shape and dimensions of figure two, folded along the dotted 

 lines and glued where the sides overlap. In constructing the 

 inner tray, a piece of cardboard was cut the shape and dimensions 

 of figure three, folded along the dotted lines and glued, by the 

 flaps, to the inner portions of the adjacent sides. 



EXPERIMENT 26. In the same weed that has been the site of most 

 of these experiments, I placed one green and two red boxes. The 

 green box was placed near one of the red boxes. The red boxes con- 

 tained honey, the green was empty. 



It had been raining all morning and it was still quite cloudy, 

 and only a few bees were afield. About five minutes after the 

 beginning of the experiment a bee noticed one of the^red boxes. 

 She examined it carefully from all sides, found the entrance 



FIG. 2. 



and entered. Soon after she entered, a heavy shower of rain 

 began to fall and I took shelter under a tree. On my return 

 (about fifteen minutes later) I found a large digger wasp in box 

 number one and bees visiting red box number two. As long as 

 that wasp remained in box number one, no bee would enter it. 

 During the time that these boxes were under continuous observa- 

 tion, fifteen bees visited red box number one and twenty-ri^ht 

 visited red box number two. Towards the close of this cxpcri- 



