In conclusion it may be worth while to sum up the main points brought out in this brief discussion of a very large question. We have seen that there are two streams of opinion regarding the relative strength of the sexual impulse in men and women: one tending to regard it as greater in men, the other as greater in women. We have concluded that, since a large body of facts may be brought forward to support either view, we may fairly hold that, roughly speaking, the distribution of the sexual impulse between the two sexes is fairly balanced. We have, however, further seen that the phenomena are in reality too complex to be settled by the usual crude method of attempting to discover quantitative differences in the sexual impulse. We more nearly get to the bottom of the question by a more analytic method, breaking up our mass of facts into groups. In this way we find that there are certain well-marked characteristics by which the sexual impulse in women differs from the same impulse in men: 1. It shows greater apparent passivity. 2. It is more complex, less apt to appear spontaneously, and more often needing to be aroused, while the sexual orgasm develops more slowly than in men. 3. It tends to become stronger after sexual relationships are established. 4. The threshold of excess is less easily reached than in men. 5. The sexual sphere is larger and more diffused. 6. There is a more marked tendency to periodicity in the spontaneous manifestations of sexual desire. 7. Largely as a result of these characteristics, the sexual impulse shows a greater range of variation in women than in men, both as between woman and woman and in the same woman at different periods. It may be added that a proper understanding of these sexual differences in men and women is of great importance, both in the practical management of sexual hygiene and in the comprehension of those wider psychological characteristics by which women differ from men. APPENDICES. APPENDIX A. THE SEXUAL INSTINCT IN SAVAGES. I. In the eighteenth century, when savage tribes in various parts of the world first began to be visited, extravagantly romantic views widely prevailed as to the simple and idyllic lives led by primitive peoples. During the greater part of the nineteenth century the tendency of opinion was to the opposite extreme, and it became usual to insist on the degraded and licentious morals of savages.[181] In reality, however, savage life is just as little a prolonged debauch as a prolonged idyll. The inquiries of such writers as Westermarck, Frazer, and Crawley are tending to introduce a sounder conception of the actual, often highly complex, conditions of primitive life in its relations to the sexual instinct.