EXPERIMENTS WITH WASPS. 377 



APPENDIX F. 



The following are the detailed observations on wasps 

 alluded to in Chapter XI. 



The first one, I believe a worker of Vespa Germanica, 

 I marked and put to some honey on September 18. 



The next morning she came for the first time at 

 7.25, and fed till 7.28, when she began flying about 

 the room, and even into the next ; so I thought it well 

 to put her out of the window, and she then flew straight 

 away to her nest. My room, as already mentioned, had 

 windows on two sides ; and the nest was in the direc- 

 tion of a closed window, so that the wasp had to go 

 out of her way in passing out through the open one. 



At 7.45 she came back. I had moved the glass 

 containing the honey about two yards ; and though it 

 stood conspicuously, the wasp seemed to have much 

 diflBculty in finding it. Again she flew to the window 

 in the direction of her nest, and I had as before to 

 show her the way out, which I did at 8.2. 



At 8.15 she returned to the honey almost straight. 

 At 8.21 she flew again to the closed window, and 

 apparently could not find her way, so at 8.35 I put 

 her out again. It seems obvious from this that wasps 

 have a sense of direction, and do not find their way 

 merely by sight. 



At 8.50 back to honey, and 8.54 again to wrong 

 window ; but finding it closed, she took two or three 

 turns round the room, and then flew out through the 

 open window. 



At 9.24 back to the honey, and 9.27 away, first, 

 however, paying a visit to the wrong window, but 

 without alighting. 



