ZOOGENY. 383 



the animal systems, such as the nervous, muscular, and 

 osseous, occurs in the head. 



2185. In so far as it combines with bones and mus- 

 cles, it becomes an organ of motion, and, when with the 

 nerves, an organ of sensation. The animal or sarcal in- 

 testine is oesophagus and mouth. 



2186. The motor organ is an organ of prehension. 

 The organs of prehension are endowed with independent 

 motion, and therefore move towards the food. The first 

 general organs of motion are the members of the body. 

 In the higher animals the thoracic members are at once 

 the prehensible organs. Instead of the aliment being 

 obliged to flow, as unto the plant, in a state of suspension 

 in water, the animal moves itself toward its food. 



2187. The members are the first organs of prehen- 

 sion. But these are repeated in the head as jaws and 

 teeth. The teeth are the second organs of prehension, 

 but the first which belong to the cephalic intestine ; they 

 are called organs of seizure or prehension. 



2188. The organ of digestion is, however, one of a 

 chemical character. It must be therefore repeated as 

 such in the head. This is shown in the salivary glands. 

 The saliva is the animal gastric juice, and is therefore 

 directly solvent in its properties. It is poison. 



2189. After and during the operation of the saliva, 

 the aliments in the mouth are subjected to the action of 

 the molar teeth and ground or chewed. These commi- 

 nuting or crushing organs are only a repetition of the 

 act of prehension, and consequently belong to the pre- 

 hensile or biting organs. 



2190. The mouth is the stomach repeated in the 

 head. 



2391. The union of the intestine with the nervous 

 system is the tongue. 



2192. The intestine, when repeated in the head's mus- 

 cular system, is the organ of deglutition, as is seen in 

 the pharynx and oesophagus. 



2193. The prehensile and manducatory, venomous, 

 gustatory, and deglutitory organs, are the forms into which 



