142 YOUNG ANTS RECOGNISED 
then abandoned. At 10.50 the third also was dragged 
out of the nest. 
I then put two of these ants and a third young one 
into nest 2. At 11.15 a.M. they seemed quite happy; 
but at 11.30 two were being dragged about; the third, 
who was very young, was, on the contrary, being care- 
fully cleaned. At 12 this last one was undistinguish- 
able; of the other two, one was being attacked, the 
second was taken no notice of, though several ants 
came up to her. At 12.5 the first was dragged out of 
the nest and then abandoned; the second was being 
carefully cleaned. This went on till 12.20, when the 
paint was entirely removed. 
September 27.—I put in three more of these young 
ants into nest 1, at 7.45 a.m. At8 o’clock they seemed 
quite at home among the other ants. A few minutes 
after, one was being held by a leg; the other two seemed 
quite at home. At 8.30 one was almost cleaned, the 
other I could not see. At 9 two of them were quite at 
home, but I could not see the third. At 9.30 they were 
both nearly cleaned ; and after that we were no longer 
able to distinguish them. 
Thinking the results might be different if the ants 
were allowed to become older before being returned into 
their nests, I made no further observations with these 
ants for two months. I then took two of the ants which 
had emerged from the pupz separated on Septem- 
ber 20, and which had been brought up by ants 
from nest 2, and on November 22 I put them back 
