The Descent of Man

i. 1869, p. 87.) on three occasions saw female
orangs, accompanied by their young, "breaking
off branches and the great spiny fruit of the
Durian tree, with every appearance of rage;
causing such a shower of missiles as effectually
kept us from approaching too near the tree." As
I have repeatedly seen, a chimpanzee will
throw any object at hand at a person who offends
him; and the before-mentioned baboon at
the Cape of Good Hope prepared mud for the
purpose.
In the Zoological Gardens, a monkey, which
had weak teeth, used to break open nuts with a
stone; and I was assured by the keepers that
after using the stone, he hid it in the straw, and
would not let any other monkey touch it. Here,
then, we have the idea of property; but this
idea is common to every dog with a bone, and
to most or all birds with their nests.
The Duke of Argyll (42. 'Primeval Man,' 1869,
pp. 145, 147.) remarks, that the fashioning of an