Objections to the Hypothesis of a Primitive State of Promiscuity.--We may now briefly sum up the main criticisms of this theory of a primitive state of promiscuity, not only as we may derive them from inductive study of the higher animals and the lower peoples, but also as we may deduce them from known psychological and biological facts or principles. (1) In the first place, then, the animals next to man, namely, the anthropoid apes, do not show a condition of promiscuity. (2) The evidence from the lower peoples does not show that such a condition exists or has ever existed among them. (3) A third argument against this hypothesis may be gained from what we know of primitive economic conditions. Under the most primitive conditions, in which man had no mastery over nature, food supply was relatively scarce, and as a rule only very small groups of people could live together. The smallness of primitive groups, on account of the scarcity of food supply, would prevent anything like promiscuity on a large scale. (4) A fourth argument of a deductive nature is that the jealousy of the male, which characterizes all higher animals and especially man, would prevent anything like the existence of sexual promiscuity. The tendency of man would have been to appropriate one or more women for himself and drive away all rivals. Long ago Darwin argued that this would prevent anything like the existence of a general state of promiscuity. (5) A fifth argument against this theory may be got from the general biological fact that sexual promiscuity tends to pathological conditions unfavorable to fecundity, that is, fertility, or the birth of offspring. Physicians have long ago ascertained this fact, and the modern prostitute gives illustration of it by the fact that she has few or no children. Among the lower animal species, in which some degree of promiscuity obtains, moreover, powerful instincts keep the sexes apart except at the pairing season. Now, no such instincts exist in man. Promiscuity in man would, therefore, greatly lessen the birth rate, and any group that practiced it to any extent would soon be eliminated in competition with other groups that did not practice it. (6) We have finally the general social fact that promiscuity would lead to the neglect of children. Promiscuity means that the male parent does not remain with the female parent to care for the offspring and, therefore, in the human species it would mean that the care of children would be thrown wholly upon the mother. This means that the children would have less chance of surviving. Not only would promiscuity lead to lessening the birth rate, but it would lead to a much higher mortality in children born. This is found to be a striking fact wherever we find any degree of promiscuity among any people. Hence, promiscuity would soon exterminate any people that practiced it extensively in competition with other peoples that did not practice it.