334 RECOGNITION OF FRIENDS 
the friend was being cleaned. 2.30 p.M.-ditto, 3 ditto. 
At 3.30 p.m. the friend was almost clean: the stranger 
was being dragged about. 6 P.M. ditto. 
June 10.—Repeated the same observation at 10 a.M., 
but transposed the colours by which they were distin- 
guished, so that there might be no question whether 
perhaps the difference of treatment was due to the 
difference of colouring. At 11 a.m. the friend was all 
right, the stranger was being dragged about by an 
antenna. 11.30 .M. the friend all right, the stranger 
being dragged about by one leg. 12 A.M. ditto. 
12.30 p.m. the friend all right, the stranger being 
dragged about by an antenna. 1 P.M. ditto, 2 P.M. ditto, 
3 P.M. ditto, 
July 3.—Put in a friend and a stranger at 11. a.m. 
At 11.30 a.m. the stranger was being dragged about, 
the friend was being cleaned. 12 A.M. ditto. 12.30 a.m. 
both were now being attacked. 1 p.m. ditto. 
This seems to show that some at least of the 
ants have forgotten their old friends. Perhaps, however, 
these were young ants. 
July 16.—Put in two friends at 7.454.mM. At8 aM. 
each was being dragged about by an antenna, 8.30 A.M. 
one was being dragged about by both antennz, the 
other by both antennz and one leg. 10 a.M. both were 
still attacked, but it is curious that at the same time 
others were cleaning off the paint. 12.30 p.m. both 
still attacked. 
July 17.—Put ina friend at 8.15 a.m. At 8.30 A.M. 
they were cleaning her. At 9 A.M. she was almost clean. 
9.30 a.M. she seemed quite at home, and had only one 
spot of paint on her. 10.20 a.m. ditto. 
July 20.—Put ina friend and stranger at 9 A.M. 
At 9.30 a.m. the friend seemed all right; the stranger 
was in a corner by herself. At 10 a.m. the friend was 
being cleaned ; the stranger had come out of her corner 
and was being fiercely attacked. At 11 a.M. the friend 
