Bandelocque tells us of a girl only _eight_ years of age, who suckled her little brother more than a month! And Sir Hans Sloane tells us of a lady aged _sixty eight_, who nursed several of her grandchildren, though she had had no child herself for twenty years! Dr. Francis, of New York, describes the case of a lady who continued to secrete milk regularly for _fourteen years_ after having lost her child, so that she could always nurse an infant; and Dr. Kennedy relates an instance of another who continued to suckle children, uninterruptedly, for _forty-seven years_, and who had milk perfectly sweet and good even when _eighty-one years old_! Dr. Clark, of Alabama, informs us that a married lady, who had never been pregnant, was requested to take charge of an infant during the night, and that to quiet it she had put her nipple in its mouth. This was done frequently, and to the great surprise of all it induced a flow of milk. A singular circumstance connected with this was that the lady soon after became _pregnant_, though previously barren! This will not appear so surprising, however, to those who know the connection between the breasts and the womb, and who have observed the mysterious bond of sympathy by which their functions are united.--(See the articles on _Menstruation_, and on _Sterility_, in my "Diseases of Woman," for other instances of this kind.) The structure of the male breast is precisely the same as that of the female, but it is seldom developed. Instances have been known, however, of the milk being secreted in men, and of children having been nourished by it! Humboldt gives us an instance of this kind, and Professor Hull, of Maryland, exhibited a colored man to his class, in the year 1827, who had a large full bosom, like a female, and who had often officiated as _wet nurse_ in the family of his mistress. The secretion appears to have been established by his putting the children that he had to nurse to the nipple, to quiet them. When the milk was not needed it was found as difficult to dry it up as it is in some females, but it was soon made to flow again, by applying a child to the breast for a few times. This man differed _in no other respect_ from any other man! In the females of some races of the human kind, the mammæ attain a surprising length, and become very flaccid, so that they hang down to the hips, or lower, and may be thrown over the shoulder for the child to nurse from while carried on the back. Some suppose this to constitute a real variety of the human race, but others suppose it to result merely from habit, which is probably correct. When the breasts are small sized in young females, their growth may often be promoted, but the means need not be pointed out here. SECTION II. SIGNS OF PREGNANCY, AND THE MEANS OF DETECTING IT; ITS DURATION, AND THE PERIOD AT WHICH THE FŒTUS CAN LIVE.