SEPAEATION OF MORE THAN A YEAE. 341 



at 9.30, 10, 11, 12, and 1. She was evidently quite at 

 home. 



February 15. — Ditto. The ant was put in at 10.15 

 A.M., and visited at 10.30, 11, 12, 1, 2, 3, and 4. She 

 was not attacked. 



February 19. — Ditto. The ant was put in at 10 

 A.M., and I looked at 10.15, 10.30, 11, 12, 1, and 2. 

 She was not attacked. 



March 11. — Ditto. Ditto at 9.30 a.m.; visited at 

 10.30, 12.30, 2.30, and 5.30. She was not attacked. 



March 12.— Ditto. Ditto at 10 a.m.; I looked at 

 12, 2, and 4. She was not attacked. 



March 18. — Put in two friends at 1 p.m.; I looked 

 at 2 and 4. She was not attacked. 



A'pril 21. — Put in one friend at 9.30 a.m. At 10 

 she was all right, also at 12 and 4 p.m. She was not 

 attacked. 



April 22. — Put in two friends at 8.30 a.m. I looked 

 at 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 in two friends at 12.32. I looked 

 at them at 1, 2, 3, 4, and 6 p.m. 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 comer by herself. 11 ditto, 12 ditto. At 1 

 the friends were all right ; the stranger was being 

 attacked. 2, the friends all right ; the stranger had 

 been 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. I looked at 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 August 4, 1875, till May 14, 1877, when the last 

 ones were restored to their friends. In no case was a 

 friend attacked. 



