TO THE NEST AFTER COMING TO MATURITY. 139 



them ; but there was no fighting going on in the 

 nest. 



On the same day, at 9.45 a.m., I put into nest 64 

 two more as before. At 10 they were both quite at 

 home among the other ants. 10.15 ditto, 10.30 ditto, 

 1 1 ditto, 1 2 ditto, 1 ditto. I then put in a stranger ; 

 and she was at once fiercely attacked. 



September' 8. — Put in two more of the ants which 

 had emerged from the pupae, as before, at 9.30 a.m. 

 At 9.45 they were all right. 10 ditto, 10.30 ditto, 11 

 ditto, 11.30 ditto, 12 ditto, 1 ditto. 



On the other hand, on September 14, I put one of 

 these ants in the same manner into nest No. 60 at 6.30 

 A.M. She was at once attacked. At 6.45 she was being 

 dragged about by an antenna. 7 ditto. At 7.30 she was 

 by herself in one corner. At 8.30 she was again being 

 dragged about. 9.30 ditto. The difference, therefore, 

 was unmistakable. 



Once more, on July 291 put some pupae of Formica 

 fusca from out of doors under the charge of three ants 

 from nest No. 36. 



August 3. — Several had come out, and I put two 

 of them into the nest of their nurses (No. 36) at 2 p.m. 

 Both were at once attacked. At 2.45 they were being 

 dragged about. 3 ditto. 3.30 one was being dragged 

 about. 4, both were being attacked. Eventually one 

 was turned out of the nest. The other I lost sight of. 



August 4. — Put two more of this batch into nest 

 No. 36, at 12.30. One was at once attacked. 1, one 



