PHYSIOLOGY. 483 



2964. The ovum is the entire animal in idea, or in 

 design, but not yet in structure ; it is the thought unto 

 the animal ; it is related to the animal as the thought is to 

 the word. 



2965. The ovum has therefore no organ of the animal 

 preformed within itself, but only the materials requisite 

 thereunto. But the materials are not so general in cha- 

 racter, that like as from the infusorial mass, everything 

 could become or derive its existence from everything else. 

 But they are at once destined for definite organs, as the 

 vitellus for the intestine, the albumen probably for the 

 integument. 



2966. In an ovum therefore the animal resides pre- 

 formed only in a spectral or phantom-like manner. There 

 are principal masses present in it, from which the prin- 

 cipal organs originate. 



Mammae. 



2967. In the oviparous animals the secretion of the 

 vitellus is distinct from that of the albumen; the one 

 takes place in the ovarium, the other in the oviduct or 

 uterus. 



2968. By degrees the albumen-secreting vessels ad- 

 vance further outwards upon the orifice of the sexual 

 parts, and are then called milk-organs Mamma. 



2969. Mammae are only the vascular bundles of the 

 oviduct placed in jthe direction outwards, or albumen- 

 glands of the integument. 



2970. Mammalia are those animals where the ovarium 

 has completely separated into albumen- and vitellus- 

 organ. 



2971. Those mammae which have scarcely been 

 detached from the oviduct, and become free, are neces- 

 sarily more incomplete, and are situated in the neighbour- 

 hood of the sexual parts as udders. 



2972. As the separation of the substances composing 

 the ovum is an advancing-step towards their improve- 

 ment, so also is the removal of the albumen-glands from 

 the vitelline sac a nobler condition. They cannot, how- 



