2GG SIK JOUN LUBEOCK ON AJ^TS, BEES, AND WASPS. 



April 21. Put iu one friend at 9.30 a.m. At 10 she was all 

 right, also at 12 and -1. 



April 22. Put in two friends at 8.30. Visited them at 9 and 

 10, when they were almost cleaned. After that I could not find 

 them ; but I looked at 2, 4, and 6, and must have seen if they were 

 being attacked. 



April 23. Put iu two friends at 12.32. Visited them at 1, 2, 

 3, 4, and 6. They were not attacked. 



May 13. Put in two friends and a stranger at 7.45. At 9 the 

 two friends were with the rest. The stranger was in a corner by 

 herself. 11 do., 12 do. At 1 the friends were all right ; the stran- 

 ger was being attacked. 2, the friends all right ; the stranger 

 had been killed and dragged out of the nest. The next morning 



I looked again ; the two friends were all right. 



May 14. Put in the remaining three friends at 10. Visited 

 them at 11, 12, 1,2, 4, and 6. They were not attacked, and seemed 

 quite at home. 



This completed the experiment, which had lasted from Aug. 4, 

 1875, till May 14, 1877, when the last ones were restored to their 

 friends. In no case was a friend attacked. 



Though the above experiment seemed to me conclusive, I 

 thought it would be well to repeat it with another nest. 



I therefore separated a nest of For7nica fibsca into two portions 

 on the 20th Oct. 1876. 



On the 25th Peb. 1877, at 8 a.m. I put an ant from the smaller 

 lot back among her old companions. At 8.30 she was quite com- 

 fortably established among them. At 9 do., at 12 do., and at 

 4 do. 



June 8. I put two specimens from the smaller lot back as 

 before among their old friends. At 1 they were all right and 

 among the others. At 2 do. After this I could not distinguish 

 them amongst the rest ; but they were certainly not attacked. 



June 9. Put in two more at the same hour. Up to 3 iu the 

 afternoon they were neither of them attacked. On the contrary, 

 two strangers, from different nests, which I introduced at the 

 same time, were both very soon attacked. 



July 14. I put in two more of the friends at 10.15. In a few 

 minutes they joined the others, and seemed quite at home. At 



II they were among the others. At 12 do., and at 1 do. 



July 21. At 10.15 I put in two more of the old friends. At 



