TISM. The first name is applied when male and female genital glands exist side by side; the latter when the construction of the genital glands conforms to one type, while the genital ducts and the external genitals conform to the opposite type.
The genesis of hermaphroditism will be clearly understood if we remember that the fcetal disposition of the genital duets is bi-sexual (Waldeyer). Every embryo possesses Wolf-Han ducts and ifftillerian fibres, and the development of the germ glands, indifferent during the first fcetal period, may progress in the same individual in two direc tions. The existence of true hermaphroditism, which was for a long time denied, is proven by the famous observations of V. Salen and Carr& They concern individuals in whom typical ovarian and typical testicular tissue were found in the same genital gland. Of course both varieties of ILI3Stle were undeveloped and were not fit for functional action, and true hermaphroditism can therefore claim only theoretical interest, since—setting aside. its great rarity—up to this, time the
faculty to impregnate and to conceive simultaneously has never been observed in man. The common classification into hermaphrodismus lateralis, unilatcralis and bilateralis, does not require any comment.
kseudohertnaphroditism is far oftener found. Neugebauer who may be considered to be the best authority on this subject, has ana lysed 9.SS single observations, and reported 43 cases in his own practice. He recommends that we preserve to-day the old division of Klebs into masculine and feminine hermaphroditism. Either of these may be internal, external, or complete. Neugebauer characterizes these varia tions as follows: