244 HOMOLOGICAL RELATIONS OF THE 



of any evidence in support of the co-existence of the 

 essential organs of the two sexes the spermatic and ovarian 

 glands which is the more remarkable from there being a 

 very complete representation of the associated structures, 

 both male and female.* 



The organs of both sexes are developed on the basis of 

 prior embryonic structures, the Wolffian bodies. In con- 

 nection with these the embryo exhibits on each side two 

 hollow filaments or tubules the eiferent duct of the 

 Wolffian body and the Mullerian cord. According to 

 Kobelt, in the male the former is converted into the vas 

 deferens, while the latter almost disappears. In the female, 

 the latter is converted into the fallopian tube, while, in the 

 human species, the duct entirely disappears, though in 

 Ruminantia and Pachydermata, it remains as the rudi- 

 mentary structure known by the name of the canal of 

 Gartner, ( Morphologically, the uterus is merely a dila- 

 tation of the common inferior termination of the two 

 oviducts or fallopian tubes, and is represented in the 

 male by the prostatic vesicle, which, though a mere 

 follicle in the human species, assumes, in some of the lower 

 animals, so much the character of a miniature uterus, with 

 two filaments or tubules going off from its upper angles, 

 alongside the vasa deferentia, that Weber gives it the name 

 of " Uterus Masculinus."J Up to a certain period of 



* This correspondence becomes still more striking, if we extend our 

 survey to the other Mammalia, in some of which we find the scrotum cleft, 

 in others the clitoris traversed by the urethra. Simpson on Hermaphro- 

 ditism, Obstretic Works, Vol. II., pp. 220-307. It is to an abnormal 

 development of these accessory parts that the multiform disguises of sex 

 ai'e due, which are popularly confounded with true hennaphroditism. 



f Valentin's Text-book of Physiology, 661. 



Zusatze zur Lehre vom Bau and den Verrichtungen der Geschlechtsor- 

 gane. Leipsic, 1846. 



The development is well marked in the Beaver, Rabbit, Boar, Horse, 

 Asa, Badger, Goat, Sheep, and Deer. 



But, perhaps, as is pointed out by Leuckart, the part may be more ac- 



