NATURAL FOOD OF HOESE. 



29 



the pharynx. The ninth pair of nerves is a motor nerve, 

 and being chiefly spent on the tongue, bears the name of 



the lingual nerve. 



Fig. 4. 



SKELETON AND OUTLINE OF A HORSE. 



The figure of the skeleton of the horse, fig. 4, with the soft parts in outline introduced 

 here, will assist the reader in following the descriptions of the parts concerned in 

 nutrition. 



Deglutition. The natural food of the horse, in such countries 

 as are favourable to his existence in the wild state, consists 

 mainly of green herbage, and, at certain seasons, of the same 

 herbage in a more or less dried condition, together with its fruit, 

 also in a dry and hard form. Such herbage is made up prin- 

 cipally of various species of grasses, and of plants of the legu- 

 minous order ; many of the latter of which as clover, lucern , 

 tare when cultivated, are known as the artificial grasses. To 

 food of this kind the teeth of the horse are finely adapted. The 

 incisor teeth cut through the stems, whether succulent or dry, 



