A Mrs. H. ceased menstruating at 52, was free from menstrual flow until 71 years of age, and then menstruated regularly (a perfect menstrual flow), every 40 days, until she died at the age of 76. She possessed the erotic desire and enjoyed coition. Her husband died two years before she did. She became confused in religious doctrines after her husband’s death; was melancholy and fond of isolation; committed suicide by hanging herself to her bedpost. I assisted in cutting the scarf and learned all particulars of her past life from friends and her physician. Many cases are on record of females menstruating at very early periods. As to these discharges being indicative of the reproductive stage, much doubt may be expressed. It is very common for the male to retain his virility to a very advanced age. I am acquainted with an octogenarian, who married a young girl of nineteen, whose copulation was fruitful and the child healthy. This is doubtless not so very uncommon, in proportion to the circumstances offered for a test. We would naturally conclude that, on account of prostitution and debauch, it was necessary that marriage become a legally organized institution. There is no evidence that in early history marriage was any more than a choice, the consummation of which was simply the invocation of a superhuman or divine watch-care; that they were bound in wedlock, not by statute law, but by a superstitious belief and natural selection. Natural selection was more cultivated and was a better guidance than in modern times, when law governs the joining and casting asunder. Copulation is the key to morality and society. So certain bonds of restriction and moral government of a social character exist, and they are made to restrain human beings and to control and limit copulation to a legitimate sphere; viz., man and wife. Any deviation from this legitimate course has long been denominated prostitution, which exists in public and private. The vice of changing partners has become so open and for such trivial causes that laws have been enacted, of the most rigid character, and then divorcing and remarrying are carried on to an alarming extent. These are only the attributes of copulation and erotic desire. Natural copulative affinity constitutes the bond of chaste affection that holds together a man and wife in harmony and love. Parties, male and female, have existed just as happily during life, when marriage vows had never been solemnized and legalized by other than natural copulative affinity. This sexual affinity constitutes more than mere admiration, or transient passion or erotic anxiety: everlasting contentment and felicity will follow such natural adaptation. Some are contented in wedlock, as they possess submissive dispositions, who are not adapted by copulative affinity.