A day's work. 



389 



when I opened my window at 6 in the morning, she 

 was already waiting outside, the temperature being 61*. 

 The 23rd was rather colder, and she came first at 6.20, 

 the temperature being again 61°. 



I was not at home during these days ; but, as far 

 as I could judge from watching in the mornings and 

 evenings, no other wasp found the honey. On the 

 24th I had a holiday, and timed her as follows. It was 

 rather colder than the preceding days, and she did not 

 come till 6.40, when the temperature was 58" She 

 returned as follows : — 



6.49 

 6.58 

 7.12 

 7.22 

 7.32 

 7.40 

 7.50 

 8. 

 8. 9 



8.19 

 8.26 

 8.35 

 8.45 

 8.52 

 9. 2 

 9.12 

 9.45 



I had almost closed the window so that she had a 

 difficulty in finding her way. 



9.58 I 10.32 



10.10 I 10.51 



The temperature was still only 60°, and it was rain- 

 ing, scarcely any other wasps about. 



11. 1 

 11.11 

 11.21 

 11.29 

 11.40 

 11.46 

 11.56 



12. 6 

 12.14 

 12.25 

 12..S3 



1.21 

 1.32 

 1.42 

 1.53 



2. 

 2.11 

 2.26 

 2.35 

 2.51 

 2.59 



3. 8 



