treat her roughly in retaliation.

Another of Tiny's favorite forms of amusement was that of trying to stir
up the other monkeys to attacks on one another. She very cleverly did
this by pretending that she herself was being attacked. The instant the
older animals began to show hostility toward one another she would leap
out of the way and watch the disturbance with evident satisfaction. It
was this mode of behavior in the little animal which ultimately provided
opportunity for the observations which I wish now to report as
indicative of sympathetic, possibly I may say altruistic, emotions.

Tiny was confined with Scotty in a cage adjoining the one in which
Jimmie and Gertie were being kept. The cages were separated by wire
netting of half-inch mesh.

One morning as I was watching the behavior of the animals in the several
cages, I noticed Tiny dressing with her teeth a wounded finger. It had
evidently been bitten by one of the other animals, in all probability
either by Jimmie or Gertie. Tiny was trimming away the loose bits of
skin very neatly and cleansing the wound. After working at this task for
a few minutes, she quickly climbed up to the shelf near the top of her
cage, and by rushing to the partition wire between the two cages, she
lured Gertie to an attempted attack on her. Gertie sprang up to the
partition, placed her hands on it, with the fingers projecting through
the meshes, and attempted to seize Tiny's fingers with her teeth. But
the latter was too quick for her, and withdrawing her hands, like a
flash seized in her teeth the middle finger of Gertie's left hand. She
then bit it severely and with all her might, at the same time pulling
and twisting violently, often placing the entire weight of her body on
the finger. Her sharp teeth cut to the bone, and it was impossible for
the larger and stronger monkey to tear away. For several seconds this
continued, then Gertie succeeded in escaping, whereupon she at once
retreated to the opposite end of her shelf and proceeded to attend to
her injured finger. She cried, wrung her hands, and from time to time
placed the finger in her mouth as though in an effort to relieve the
pain. By this time Jimmie's attention had been attracted by the
disturbance and he rushed up to the shelf, and facing Gertie, watched
her intently for a few seconds. The look of puzzled concern on his face
was most amusing. Apparently he felt dimly that something in which he
should have intellig