For more recent information about the Gorilla we are indebted to Herr von Koppenfells. He states that the male spends the night crouching at the foot of the tree, against which he places his back, and thus protects the female and their young, which are in the nest above, from the nocturnal attacks of leopards. Once he observed a male and female with two young ones of different ages, the elder being perhaps about six years old, the younger about one.[49] When all these statements are compared, it is impossible to doubt that the Gorilla lives in families, the male parent being in the habit of building the nest and protecting the family. And the same is the case with the Chimpanzee. According to Dr. Savage, “it is not unusual to see ‘the old folks’ sitting under a tree regaling themselves with fruit and friendly chat, while ‘their children’ are leaping around them and swinging from branch to branch in boisterous merriment.”[50] And Herr von Koppenfells assures us that the Chimpanzee, like the Gorilla, builds a nest for the young and female on a forked branch, the male himself spending the night lower down in the tree.[51] Passing from the highest monkeys to the savage and barbarous races of man, we meet with the same phenomenon. With the exception of a few cases in which certain tribes are asserted to live together promiscuously—almost all of which assertions I shall prove further on to be groundless—travellers unanimously agree that in the human race the relations of the sexes are, as a rule, of a more or less durable character. The family consisting of father, mother, and offspring, is a universal institution, whether founded on a monogamous, polygynous, or polyandrous marriage. And, as among the lower animals having the same habit, it is to the mother that the immediate care of the children chiefly belongs, while the father is the protector and guardian of the family. Man in the savage state is generally supposed to be rather indifferent to the welfare of his wife and children, and this is really often the case, especially if he be compared with civilized man. But the simplest paternal duties are, nevertheless, universally recognized. If he does nothing else, the father builds the habitation, and employs himself in the chase and in war.