

THE DEVELOPMENT OF THE UROGENITAL SYSTEM. 405 



and testicles, true hermaphroditism is the result; if they give rise to either 

 ovaries or testicles but the external genitalia and general characteristics 

 develop in the opposite direction, false hermaphroditism is the result. Thus 

 the hermaphroditic condition is potentially present in every individual 

 during the earlier stages of development ; the most remarkable fact is that it 

 is not more common. 



References for Further Study. 



ADAMI, J. G.: The Principles of Pathology. Vol. I, 1908. 



AICHEL, O.: Vergleichende Entwickelungsgeschichte und Stammesgeschichte der 

 Nebennieren. Arch.f. mik Anat., Bd. LVI, 1900. 



ALLEN, B. M.: The Embryonic Development of the Ovary and Testis in Mammals. 

 Am. Jour, of Anat., Vol. Ill, 1904. 



BEARD, J.: The Germ-cells of Pristiurus. Anat. Anz., Bd. XXI, 1902. 



BEARD, J.: The Morphological Continuity of the Germ Cells in Raja batis. Anat. 

 Am., Bd. XVIII, 1900. 



BREMER, J. L. : The Interrelation of the Mesonephros, Kidney and Placenta in differ- 

 ent Classes of Mammals. Am. Jour, of Anat., Vol. XIX, 1916. 



BONNET, R.: Lehrbuch der Entwickelungsgeschichte. Berlin, 1907. 



CORNER, G. W.: On the Origin of the Corpus Luteum in the Sow from both 

 Granulosa and Theca Interna. Am. Jour, of Anat., Vol. XXVI, 1919. 



EGGERTH, A. H.: On the Anlage of the Bulbo-urethral (Cowper's) and Major Vestibu- 

 lar (Bartholin's) Glands in the Human Embryo. Anat. Record, Vol. IX, 1915. 



EIGENMANN, C. H.: On the Precocious Segregation of the Sex-cells of Micrometrus 

 aggregatus. Jour, of MorphoL, Vol. V, 1891. 



FELIX, W.: Entwickelungsgeschichte des Excretions-systems. Ergebnisse der Anat. 

 u. Entunck., Bd. XIII, 1903. 



FELLX, W., and BUHLER, A.: Die Entwickelung der Harn- und Geschlechtsorgane. 

 In Hertwig's Handbuch d. vergleich. u. experiment. Entwickelungslehre der Wirbeltiere, 

 Bd. III. Teil I, 1904. 



GAGE, S. P.: A Three Weeks' Human Embryo, with Especial Reference to the Brain 

 and Nephric System. Am. Jour, of Anat., Vol. IV, 1905. 



GERHARDT, U.: Zur Entwickelung der bleibenden Nieren. Arch. f. mik. Anat., Bd. 

 LVII, 1901 



HERTWIG, O. : Lehrbuch der Entwickelungsgeschichte des Menschen und der Wirbel- 

 tiere. Jena, 1906. 



HILL, E. C.: On the Gross Development and Vascularization of the Testis. Am. 

 Jour, of Anat., Vol. VI, 1907. 



HUBER, G. C. : On the Development and Shape of the Uriniferous Tubules of Certain 

 of the Higher Mammals. Am. Jour, of Anat., Vol. IV, SuppL, 1905. 



KED3EL, F.: Zur Entwickelungsgeschichte des menschlichen Urogenitalapparatus. 

 Arch.f. Anat. u. Physiol., Anat. Abth., 1896 



KINGSBURY, B. F.: The Morphogenesis of the Mammalian Ovary: Felis domestica. 

 Am. Jour, of Anat., Vol. XV, 1913. 



KOHN, A.: Das chromaffine Gewebe. Ergebnisse der Anat. u. Enlwick., Bd. XII, 1903. 



KOLLMAN, J. Lehrbuch der Entwickelungsgeschichte des Menschen. Jena, 1898. 



KOLLMAN, J.: Handatlas der Entwickelungsgeschichte des Menschen. Jena, 1907, 

 Bd. II. 



