188 ANTS REMOVED AS PUP, AND RESTORED 
August 9.—Put in another as before at 7 aM. At 
7.30 she is quite at home among the others, and already 
nearly cleaned. At8I could no longer distinguish her ; 
but certainly no ant was being attacked. 9 ditto. 
August 11.—Put in another as before at 8 A.M. 
At 8.15 she was quite at home. 8.30 ditto, 9 ditto, 
9.30 ditto, 10 ditto, 12.30 ditto. 
August 13.—Lastly, I put in the remaining young 
ant as before at 7 a.m. At 7.15 she was allright. At 
7.30 ditto and nearly cleaned. At 8 I could no longer 
distinguish her; but no ant was being attacked. 
Thus, then, as in the preceding experiment, these 
six ants when reintroduced into the nest from which 
they had been taken as pupe, were received as friends. 
On the other hand, on August 5 I put a young ant of 
the same batch into nest No. 36, from which the three 
nurses had been taken. She was introduced at 11 and 
was at once attacked. At11.30 she was being dragged 
about, and shortly after was dragged out of the nest. 
I then introduced a second; but she was at once 
attacked like the first. 
August 22.—I put some pupe of Formica fusca 
from nest No. 64 under the charge of three ants from 
nest No. 60. By September 7 several young ones had 
emerged. I put two of them into nest No. 64 at 
8.15 a.m. They were amicably received, as in the pre- 
ceding experiments, and the ants began to clean them. 
At 8.30 they were allright. 8.45 ditto. At 9 they had 
been completely cleaned, so that I could not distinguish 
