EVEN WHEN REMOVED AS PUP^. 143 



at 12 A.M. in their old nest (that is to say, in nest 1), 

 having marked them as usual, with paint. They showed 

 no signs of fear, but ran about among the other ants with 

 every appearance of being quite at home. At 1 2. 1 5 ditto. 

 At 12.30 one was being cleaned. At 12.45 both were 

 being cleaned ; and by 1 o'clock they could scarcely be 

 distinguished from the other ants. There had not 

 been the slightest symptoms of hostility. After this 

 hoiu- we could no longer identify them ; but the nest 

 was cai'efully watched throughout the afternoon, and I 

 think I can undertake to say that they were not 

 attacked. When we left off watching, the nest was 

 enclosed in a box. The next morning I examined it 

 carefully, to see if there were any dead bodies. This 

 was not the case ; and I am satisfied, therefore, that 

 neither of these two ants was killed. To test these 

 ants, I then, on November 24, at 8.30 a.m., put into 

 the nest two ants from nest 2. At 8.40 one was 

 attacked ; the other had hid herself away in a corner. 

 At 9.15 both of the ants were being dragged about. At 

 9.35 one was dragged out of the nest and then released, 

 and the other a few minutes afterwards. After watch- 

 ing them for some time to see that they remained out- 

 side, I restored them to their own nest. The contrast, 

 therefore, was very marked. 



Again, on November 25, I took two ants which had 

 emerged from pupae belonging to nest 2, removed on 

 September 20, and brought up by ants from nest 1, 

 and put them back into their old nest at 2 p.m. They 



