Senescent men are also too prone to attribute the other manifestations of their own abatement of philoprogenitive energy to the lessened ardor of their wives and perhaps to invoke the abnormal stimulus of some wild love to sustain, or at least to test, their vigor, not realizing that such a course accelerates rather than retards the involution that comes with age. The jealousy felt towards young, ardent wives by their older husbands lest they be made cuckold constitutes probably a far less frequent triangle and involves, on the whole, less suffering than that experienced by wives who are growing frigid with years toward their still lusty spouses. The age disparity of the climacteric may open a door for suspicions, however groundless, which may secretly sap the foundations of conjugal harmony. In this connection one must always take account of the fact that there is not seldom in man an Indian summer, of months or occasionally years, of enhanced inclination toward sex before its final extinction, as returns elsewhere reported show. From personal confessions and medical literature, studies made in old men’s homes, and sporadic evidence from other sources, I am convinced that for a very large proportion of old men the progressive loss of potence, with all the complex phenomena attending it, is one of the chief, and in many cases the very most psychalgic, experience of all the changes involved in growing old. There is a very pregnant sense in which a man is as old as the glands that dominate this phase of life. Laymen, including most physicians, know very little of and find it hard to credit the devices that may be resorted to to retard this atrophy or often to conserve and even enhance the vestiges of this function, the excessive activity of which is the surest preventative of a happy old age. While there are those who late in life resort to vicious and even pathological modes of gratification, those who became debauchees in youth or middle life very rarely even attain old age and all should heed the motto to “beware the Indian summer of eroticism.” Who has not observed among his personal acquaintances, to say nothing of men conspicuous in public life, the tragic consequences to health, occupation, and even life, that follow when December weds May; and what shall we say, even from the eugenic standpoint, of women who prefer to be an old man’s darling to a young man’s slave. We know, too, that children born of postmature parents are liable, if they mature at all, to do so precociously and to show early signs of senility, just as children born of those of premature age often fail to reach full maturity. If contraceptive methods are ever justifiable, it is to prevent offspring of both but perhaps especially the former kind.