There are several reasons why chimpanzees predominate on the
stage, and why so few performing orang-utans have been seen. They
are as follows:

1. The orang is sanguine, and slower in execution than the nervous
chimpanzee.

2. The feet of the orang are not good for shoes, and biped work.

3. The orang is rather awkward with its hands, and finally,

4. There are fully twice as many chimps in the market.

But the chimpanzee has certain drawbacks of his own. His nervous
temper and his forced-draught activities soon wear him out. If he
survives to see his sixth or seventh year, it is then that he
becomes so strong and so full of ego that he becomes dangerous and
requires to be retired.

Bright minds are more common among the chimpanzee species than
among the orangs. Three chimps out of every five are good for
training, but not more than two orangs out of five can be
satisfactorily developed.

Some sensitive minds shrink from the idea that man has "descended"
from the apes. I never for a moment shared that feeling. I would
rather descend from a clean, capable and bright-minded genus of
apes than from any unclean, ignorant and repulsive race of the
genus _Homo._ In comparing the chimpanzees of Fernan Vaz