result in each case. In another instance,
where a monkey was confined in a small cage so that I could easily catch
him in order to tame him by handling, when I would put my hand into the
cage to catch him, he would shake his head in this manner and accompany
the act by a plaintive sound which was so touching, that I could not
obtain my own consent to persecute the little prisoner by compelling him
to submit to my caresses. I have found that the little rogue, McGinty,
in Central Park does the same thing at times when I go into the cage and
attempt to put my hands on him, and especially when he has taken refuge
in a corner to nurse his jealousy. While I remain outside the cage, he
is so devoted to me that he will scarcely leave me to get something to
eat; but when I enter the cage, and reach out my hand toward him, he
will shake his little head and utter that peculiar clucking sound. Many
of these tests I have repeated over and over with the same results, and,
noting the conditions at the time, I am thoroughly convinced that the
sign and sound mean "no." I have observed that this sign is always made
in the same manner; but sometimes it is accompanied by a clucking sound,
while at other times it is a soft whimpering sound, almost like a low
plaintive whistle. [Sidenote: SIGN USED WITHOUT SOUND] The sign is
frequently used without the sound at all, and I must impress it upon my
reader that these results do not always present themselves in every
experiment, as much depends upon the mood and surroundings of the
subject. I have found that one advantage is to have the monkey confined
in a very small cage, as otherwise he will turn away and get out of your
reach when you press anything upon him that he does not want. I have
also found much better results by having the monkey alone, and where he
can neither see nor hear other monkeys.

Having discovered the sign of negation among the Simians, I began an
investigation to ascertain how far it could be found among the races of
mankind. I have carried my search far beyond the limits of local
inquiry, and up to this time I have found only a few trifling exceptions
in the use of this sign among all the races of men, and those few
exceptions are found among the Caucasian race, and appear to be confined
to Southern Europe. I have heard that among certain island tribes of
Polynesia these signs are reversed, but I have been assured by two
officers of the English navy and two of the United S