I)EF£LuJ'Mh'XT (>F THE FCETl'S. 



115 



The organs in the female also soon indicate the sex. The uro-genital 

 sinus forms the vulvar cavity or vestibule of the vagina, so marked in 

 the lower animals. The genital tuhercle becomes the clitoris — the 

 homologue of the penis. The cutaneous folds constitute the labia of the 

 vulva ; while the genital groove is closed at one part of its extent to 

 form the perinieum. The mavimce, appendages of the generative organs, 

 appear in the early months of uterine life, and the teats are perforated 

 very soon. They are also seen very distinctly in the male ftttus in the 

 early months. 



In certain malformations of the generative organs, more or less of 



Fig. 63. 



(Jksital Obi;axs ok .k HRRUAPtiiiODiTB Goat, tmk Malk Pakts i'redomi.nati.vc. 



a, a. Testes ; h, h. Combination of Epididymis with Abdominal Ends of 

 Miillfrian Duct.-* ; (/,'/, Vasa OeftTuntia ; e, Body of I'tenis and A'agina ; 

 /',/, I'terine Cornua ; <j, ij, Fallopian Tubes. 



their primitive conditions are retained ; the most frequent of these 

 malformations is hermaphrodism. Examples of this are by no means 

 uncommon among the lower animals, and the annexed drawing gives a 

 good example of the organs of a hermaphrodite goat, with the male 

 parts predominating.^ 



SECTION IV.— PERIOD.S OF KKVKLOPMENT. 



Thus far we have traced the development of the young creature in 

 the uterus ; but as our description may appear a little confused from 

 our having described the growth of individual organs, rather than the 



• For further details on the subject of embryology of these creatures, see my trans- 

 lation of "The Comjiarative Anatomy of the Domesticated Animals," by A. Cbauveau 

 and S. Arloing, second edition, London, 1691. 



