144 YOUNG ANTS RECOGNISED 
were watched continuously until 4 P.M., but were not 
attacked, nor eventhreatened. The following morning 
one of them was quite well, the other one we could 
not distinguish; shé had probably been cleaned. If 
she had been killed, we must have found her dead 
body. I then at 10 A.M. put in two more. At 
10.30 one of them was attacked for a moment, but 
only for a moment. With this exception neither of 
them was attacked until 2 o’clock, when one of them 
was again seized and dragged about for a minute or 
two, but then released again. We continued watching 
them till half-past 4, when they seemed quite at home 
amongst the others. On the other hand a stranger, 
put in as a test at 12, was at once attacked. It was 
curious, however, that although she was undoubtedly 
attacked, yet at the very same time another ant began 
to clean her. 
The next morning we found one ant, and only one, in 
the box outside the nest; and this turned out to be the 
stranger of yesterday. She had been almost cleaned; 
but there were one or two small particles of paint still 
remaining, so that there could be no doubt of her 
identity. 
The next day, November 27, I put in three more 
of the ants derived from these pupe at 10 a.m. At 
10.30 they were all right, running about amongst the 
others. At 11 o’clock the same was the case; but 
whilst I was looking again shortly afterwards, one of 
them was seized by an antenna and dragged a little 
