state; it is closely allied to religion; and in our individual lives it lifts us to the heights of self-realization and happiness, or plunges us down to the depths of degradation and tragedy.

While this sex hunger belongs equally to men and women, it has come to be associated with women, until we even speak of them as "the sex." Hence, when we are discussing women, we are generally discussing the sex interest common to both men and women, and this disturbs our point of view. The fact is that sex interest is a common possession, that the unit in human life, even more than among lower animals, is always a male and a female bound together by love. Just as a body can function in sleep or under the influence of a narcotic, for a time seemingly independent of the mind, so a man or a woman can live for a time in seeming independence of the opposite sex; but from any biological point of view, such a separate existence of male and female is only a transient effort. The half-life must find its mate or, after a few brief days, it dies, leaving its line extinct. For all the larger purposes of life, man is but a half-creature, and woman is equally a fragment.

It is, of course, conceivable that these two halves of the biological unit might have been made, or might have developed, alike in everything except the sexual function. At least they might have been as much alike as men are alike. They might have been of the same size, possessed of the same strength, of the same figures and gestures, complexion and hair. Their voices might have been alike. They might have had the same kinds of nervous systems, with the same desires, feelings, ideas and tendencies. In the assertions and arguments born of intellectual, industrial, social and political readjustments, it is often assumed that this is the case. Differences are minimized or denied, and an attempt is made to resolve the world of men and women into a world of human beings capable of living together in mingled competitions and coöperations, regardless of sex, except where the reproductive process is considered. But this view is superficial; born of argument it breaks down when confronted by any body of significant facts.

Again, it has happened that in the long struggle of developing civilization, sometimes one and sometimes the other sex has gained what has seemed an advantage over the other, just as in the development of any man's individual life, his brain may gain a seeming advantage over his stomach, so that it has more than its fair share of nourishment and activity. Arguing from such a case, we might declare the brain superior to the stomach in power, health and function; but in the long accounting, all such temporary superiorities are wiped out. So with men and women, seeming advantages for either are gained only at the expense of the common life; and in the last analysis, each finds his individual value only in the common life of the unit.

Let us try then to see what the special characteristics of women are, ignoring as far as possible the accidental variations of individuals, and the temporary advantages or disadvantages due to economic or ideational forces, and all assertions of what would be if things were not as they are.

While the whole matter of sex differences is in a state of unsettlement, it seems very certain that males are more active and more variable than females. This superabundant vitality appears in the males of the higher animals in secondary sex characteristics, such as more abundant and unnecessary hair and feathers, tusks, spurs, antlers, wattles, brilliant colors and scent pouches. It also appears in mating calls, songs, and general carriage of the body. Correspondingly, the female is smaller, duller colored, and less immediately attractive than the male.

All the studies that have been made on men and women, also confirm our ordinary observation that men are taller, heavier, stronger and more active than women, and this holds true in all stages of civilization, wherever tests have been made. In strength, rapidity of movement, and rate of fatigue Miss Thompson's studies[2] show that men have a very decided advantage over women. Thus in strength tests, the men in Yale have double the power of women in Oberlin;[3] while our college athletic records place men far ahead of women in all events requiring strength and endurance.

The differences in structure between men and women are such as to correspond with the functional differences just stated. A woman's bones are smaller in proportion to her size, than are those of a man. The body is longer, the hips broader, and the abdomen more prominent. Relatively to the length of the body, the arms, legs, feet and hands are shorter than in men, the lower leg and arm are shorter in proportion to the upper leg and arm. Man has the long levers and the active frame. One has only to look at two good statues of a man and a woman to realize the greater strength and activity of the man.

Woman, as she actually appears in modern society, is also less subject to variation than man;[4] she is much less liable to be a genius or an idiot than her brother.[5] She offers greater resistance to disease, endures pain and want more stoically, and lives longer; so that while more boys than girls are born in all parts of the world, where statistics are kept, in mature years women always outnumber men.

All these statements are summed up by saying that not only in women, but in most female animals of the higher orders, life is more anabolic than in males. They tend to more static conditions; they collect, organize, conserve; they are patient and stable; they move about less; they more easily lay on adipose tissue. Compared with the female, the male