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 quiteat home. At 12.15 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 
hour we could no longer identify them ; but the nest 
was carefully 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 draggedabout. 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 pupz 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 
