I have spoken so far of excessive libido in normal men, that is, in men who are otherwise normal, sane and can _whenever necessary_ control their desires. There is a form of excessive libido in men called satyriasis, which reaches such a degree that the men are often not able to control their desires, and they will satisfy their passion even if they know that the result is sure to be a venereal infection or several years in prison. Of course, satyriasis is a dysgenic factor; those suffering with that disorder are not normal; they are on the borderland of insanity, and not only should they not be permitted to marry, but they should be confined to institutions where they can be subjected to the proper treatment. =Excessive Libido in Women= Just as we have impotent and excessively libidinous men, so we have frigid and excessively libidinous women. A wife possessed of excessive libido is a terrible calamity for a husband of a normal or moderate sexuality. Many a libidinous wife has driven her husband, especially if she is young and he is old, to a premature grave. And "grave" is used in the literal, not figurative, sense of the word. It would be a good thing if a man could find out the character of his future wife's libido before marriage. Unfortunately, it is impossible. At best, it can only be guessed at. But a really excessive libido on the part of either husband or wife should constitute a valid ground for divorce. When the libido in woman is so excessive that she _cannot_ control her passion, and forgetting religion, morality, modesty, custom and possible social consequences, she offers herself to every man she meets, we use the term nymphomania. It is a disease which corresponds to satyriasis in men, and what I said of satyriasis applies with equal force to nymphomania. Nymphomaniac women should not be permitted to marry or to run around loose, but should be confined to institutions in which they can be subjected to proper treatment. =Harelip= This is a congenital defect consisting in a notch or split in the upper lip. It is due to defective development of the embryo and is as a rule found in association with cleft palate. Probably hereditary, but is not common and is not of much importance. =Myopia= Myopia means nearsightedness. This defect is undoubtedly hereditary to a certain degree, but it is doubtful if, other conditions being favorable, any man would give up a girl because she is myopic or vice versa. Still, if the condition is extreme, as it sometimes is, it should be taken into consideration. And where both the man and the woman are strongly myopic some hesitation should be felt in contracting a marriage. If the husband alone is myopic, then the defect may be transmitted to the sons but not to the daughters, and these daughters may in their turn transmit the defect to their sons but not to their daughters. In other words, the defect is more or less _sex-limited_. =Astigmatism=