400 BIOLOGY. 



vary ducts ; they open by twos and symmetrically. 

 Semen and ova are secreted like saliva. Semen and ova 

 have also a salivary function, though of this the former is 

 endowed with more than the latter. 



2327. The ova correspond, as being an object of the 

 semen, to the object of the saliva, which is the food or 

 aliment. The saliva imparts to the bole or mouthful of 

 food its first animal signification ; it renders it for the 

 first time capable of passing over into animal organs ; it 

 impregnates the morsel. The semen renders the ovum 

 capable of effecting the transition into an animal; it 

 spits upon the ovum. 



2328. Impregnation is a process of smearing with 

 saliva, conception a process of deglutition. 



2329. Pregnancy is a process of digestion and forma- 

 tion of blood. 



2330. If the internal sexual parts denote the internal 

 visceral parts of the mouth, so must the external parts of 

 the one correspond to the external of the other. The 

 labia pudendi correspond to the lips, and the clitoris to 

 the tongue, which is more perfectly represented in the 

 penis. Both tongue and penis consist of two halves ; in 

 cases where the former is fissured or divided, the latter is 

 so also, as in the Serpents and Lizards. In many ani- 

 mals, as the dogs and other Mammalia, there is likewise 

 a bone in the penis, which corresponds to the os hyoides 

 or linguale. The salivary ducts have combined with 

 the penis ; or, taken in a more strict sense, it may be 

 said, that in the penis the tongue has coalesced with the 

 oral cavity, so that both form a canal, that of the penis, 

 into which the salivary ducts (vesiculse seminales) open. 



2331. The sexual passion or venereal desire is a gus- 

 tatory process of the sexual animal, the copulation being 

 at one and the same time a matter both of taste and 

 deglutition. 



3. Germ or Embryo. 



2332. In the embryo the whole animal already resides 

 in miniature, as does the plant in its seed. 



