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They all had an intense dark ring about them; the fifth was situated about five inches above the umbilicus. Percy injected the subject and dissected and described the mammary blood-supply. Hirst mentions a negress of nineteen who had nine mammae, all told, and as many nipples. The two normal glands were very large. Two accessory glands and nipples below them were small and did not excrete milk. All the other glands and nipples gave milk in large quantities. There were five nipples on the left and four on the right side. The patient's mother had an accessory mamma on the abdomen that secreted milk during the period of lactation.

Charpentier has observed in his clinic a woman with two supplementary axillary mammae with nipples. They gave milk as the ordinary mammae. Robert saw a woman who nourished an infant by a mamma on the thigh. Until the time of pregnancy this mamma was taken for an ordinary nevus, but with pregnancy it began to develop and acquired the size of a citron. Figure 147 is from an old wood-cut showing a child suckling at a supernumerary mamma on its mother's thigh while its brother is at the natural breast. Jenner speaks of a breast on the outer side of the thigh four inches below the great trochanter. Hare describes a woman of thirty-seven who secreted normal milk from her axillae. Lee mentions a woman of thirty-five with four mammae and four nipples; she suckled with the pectoral and not the axillary breasts. McGillicudy describes a pair of rudimentary abdominal mammae, and there is another similar case recorded. Hartung mentions a woman of thirty who while suckling had a mamma on the left labium majus. It was excised, and microscopic examination showed its structure to be that of a rudimentary nipple and mammary gland. Leichtenstern cites a case of a mamma on the left shoulder nearly under the insertion of the deltoid, and Klob speaks of an acromial accessory mamma situated on the shoulder over the greatest prominence of the deltoid. Hall reports the case of a functionally active supernumerary mamma over the costal cartilage of the 8th rib. Jussieu speaks of a woman who had three breasts, one of which was situated on the groin and with which she occasionally suckled; her mother had three breasts, but they were all situated on the chest. Saunois details an account of a female who had two supernumerary breasts on the back. Bartholinus (quoted by Meckel) and Manget also mention mammae on the back, but Geoffroy-Saint-Hilaire questions their existence. Martin gives a very clear illustration of a woman with a supernumerary breast below the natural organ. Sneddon, who has collected quite a number of cases of polymazia, quotes the case of a woman who had two swellings in each axilla in which gland-structure was made out, but with no external openings, and which had no anatomic connection with the mammary glands proper. Shortly after birth they varied in size and proportion, as the breasts were full or empty, and in five weeks all traces of them were lost. Her only married sister had similar enlargements at her third confinement.

Polymazia sometimes seems to be hereditary. Robert saw a daughter whose mother was polymastic, and Woodman saw a mother and eldest daughter who each had three nipples. Lousier mentions a woman wanting a mamma who transmitted this vice of conformation to her daughter. Handyside says he knew two brothers in both of whom breasts were wanting.

Supernumerary nipples alone are also seen, as many as five having been found on the same breast. Neugebauer reports eight supernumerary nipples in one case. Hollerus has seen a woman who had two nipples on the same breast which gave milk with the same regularity and the same abundance as the single nipple. The Ephemerides contains a description of a triple nipple. Barth describes "mamma erratica" on the face in front of the right ear which enlarged during menstruation.

Cases of deficiency of the nipples have been reported by the Ephemerides, Lentilius, Severinus, and Werckardus.

Cases of functional male mammae will be discussed in Chapter IX.

Complete absence of the hymen is very rare, if we may accept the statements of Devilliers, Tardieu, and Brouardel, as they have never seen an example in the numerous young girls they have examined from a medico-legal point of view.

Duplication or biperforation of the hymen is also a very rare anomaly of this membrane. In this instance the hymen generally presents two lateral orifices, more or less irregular and separated by a membranous band, which gives the appearance of duplicity. Roze reported from Strasburg in 1866 a case of this kind, and Delens has observed two examples of biperforate hymen, which show very well that this disposition of the membrane is due to a vice of conformation. The first was in a girl of eleven, in which the membrane was of the usual size and thickness, but was duplicated on either side. In her sister of nine the hymen was normally conformed. The second case was in a girl under treatment by Cornil in 1876 for vaginitis. Her brother had accused a young man of eighteen of having violated her, and on examination the hymen showed a biperforate conformation; there were two oval orifices, their greatest diameter being in the vertical plane; the openings were situated on each side of the median line, about five mm. apart; the dividing band did not appear to be cicatricial, but presented the same roseate coloration as the rest of the hymen. Since this report quite a number of cases have been recorded.

The different varieties of the hymen will be left to the works on obstetrics. As has already been observed, labor is frequently seriously complicated by a persistent and tough hymen.

Deficient vulva may be caused by the persistence of a thick hymen, by congenital occlusion, or by absolute absence in vulvar structure. Bartholinus, Borellus, Ephemerides, Julius, Vallisneri, and Baux are among the older writers who mention this anomaly, but as it is generally associated with congenital occlusion, or complete absence of the vagina, the two will be considered together.