176 EVIDENCE OF COMMUNICATION. 
to the larve. She examined them carefully, but went 
home without taking one. At this time no other ants 
were out of the nest. In less than a minute she came 
out again with 8 friends, and the little troop made 
straight for the heap of larve. When they had gone 
two-thirds of the way, I again imprisoned the marked 
ants; the others hesitated a few moments, and then, 
with curious quickness, returned home. At 5.15 I 
put her again to the larve. She again went home 
without a larva, but, after only a few seconds’ stay in 
the nest, came out with no less than 13 friends. They 
all went towards the larve; but when they got about 
two-thirds of the way, although the marked ant had 
on the previous day passed over the ground about 150 
times, and though she had just gone straight from 
the larvee to the nest, she seemed to have forgotten 
her way and wandered; and after she had wandered 
about for half an hour, I put her to the larve. Now 
in this case the 21 ants must have been brought out 
by my marked one; for they came exactly with her, 
and there were no other ants out. Moreover, it would 
seem that they must have been told, because (which 
is very curious in itself) she did not in either case 
bring a larva, and consequently it cannot have been 
the mere sight of a larva which induced them to 
follow her. I repeated an experiment similar to this 
more than once. 
For instance, one rather cold day, when but few 
ants were out, I selected a specimen of Atta testaceo 
