In establishing the claim of excessive sex-distinction in the human race, much needs to be said to make clear to the general reader what is meant by the term. To the popular mind, both the coarsely familiar and the over-refined, “sexual” is thought to mean “sensual”; and the charge of excessive sex-distinction seems to be a reproach. This should be at once dismissed, as merely showing ignorance of the terms used. A man does not object to being called “masculine,” nor a woman to being called “feminine.” Yet whatever is masculine or feminine is sexual. To be distinguished by femininity is to be distinguished by sex. To be over-feminine is to be over-sexed. To manifest in excess any of the distinctions of sex, primary or secondary, is to be over-sexed. Our hypothetical peacock, with his too large and splendid tail, would be over-sexed, and no offence to his moral character! The primary sex-distinctions in our race as in others consist merely in the essential organs and functions of reproduction. The secondary distinctions, and this is where we are to look for our largest excess—consist in all those differences in organ and function, in look and action, in habit, manner, method, occupation, behavior, which distinguish men from women. In a troop of horses, seen at a distance, the sexes are indistinguishable. In a herd of deer the males are distinguishable because of their antlers. The male lion is distinguished by his mane, the male cat only by a somewhat heavier build. In certain species of insects the male and female differ so widely in appearance that even naturalists have supposed them to belong to separate species. Beyond these distinctions lies that of conduct. Certain psychic attributes are manifested by either sex. The intensity of the maternal passion is a sex-distinction as much as the lion’s mane or the stag’s horns. The belligerence and dominance of the male is a sex-distinction: the modesty and timidity of the female is a sex-distinction. The tendency to “sit” is a sex-distinction of the hen: the tendency to strut is a sex-distinction of the cock. The tendency to fight is a sex-distinction of males in general: the tendency to protect and provide for, is a sex-distinction of females in general. With the human race, whose chief activities are social, the initial tendency to sex-distinction is carried out in many varied functions. We have differentiated our industries, our responsibilities, our very virtues, along sex lines. It will therefore be clear that the claim of excessive sex-distinction in humanity, and especially in woman, does not carry with it any specific “moral” reproach, though it does in the larger sense prove a decided evil in its effect on human progress.