talk.
It has occurred to me since that time that she may have been deaf and
dumb, but I did not think of testing her on these points while I had an
opportunity. It is not usual for monkeys to laugh in silence, although
they frequently laugh aloud like human beings; but it is not a common
thing for them to remain silent at all times and under all conditions.
Dolly was good-natured, playful, and always showed every sign of
pleasure at my visits.

[Sidenote: "UNCLE REMUS"]

In Central Park there is a monkey of this species which I call "Uncle
Remus." He is quite fond of me, and, for my amusement, he always wants
to whip a little baby monk in the same cage with him whenever I go to
visit them. This species belongs to the same genus as the Capuchin, but
they differ in mental calibre as widely as the Caucasian differs from
the Negro; but in this case the colours are reversed. I have seen a few
fairly intelligent white-faces and a great many very stupid Capuchins,
but, to strike an average from a great number of each kind, they will be
found very widely separated in brain power.

The white-faced Cebus always has a languid expression, and looks like
some poor, decrepit old man, who has borne a great burden of care
through a long life, and finds his toil and patience ill-requited and is
now awaiting his last call. He always has a sad face, and looks as if
his friends were false. His type of speech is very far inferior to that
of the Capuchin, and I do not regard him as a good subject for my work.

[Sidenote: JIM AND THE MANGABY]

I have learned the food sound in the dialect of the sooty Mangaby, but I
have not been able to record it sufficiently well to study; but it is
one of the most peculiar sounds in the whole range of Simian speech. The
phonetic elements are nearly like "wuh-uh-uh," but the manner in which
it is delivered is very singular. It appears to be intermixed with a
peculiar clucking sound, and each sound seems independent of the other,
although so closely joined in their utterance as to sound almost like
they were uttered simultaneously by separate means. It is a deep
guttural, below the middle pitch of the human voice, while the clucking
element appears much higher in pitch, and the whole sound is marked with
a strong tremolo effect. The syllables are uttered in rapid succession,
and this peculiar sound under different conditions is uttered in at
least three different degrees of pitch about an octave apart, b