18 PHYSIOLOGY AT THE FARM. 



bones meet only behind the central point of the palate. This 

 intermaxillary bone, called also the " os incisivum," supports 

 the incisor teeth and the upper tushes. The intermaxillary 

 bone is sometimes designated as a pair of bones, under the 

 name of the anterior maxillaries. The upper or superior 

 maxillary bone is of great size ; it enters into the formation of 

 the orbit of the eye, and into the nose, as well as into the 

 mouth. The extent of its connections is apparent in fig. 3. 



SKELETON HEAD OF A HORSE. 



1, Crest of occipital bone; 2, parietal bones; 3, frontal bone; 4, 5, temporal bone; 6, 

 lachrymal bone ; 7, malar bone ; 8, superior maxillary bone ; 9, nasal bone ; 10, 

 intermaxillary bone; 11, nasal spine ; 12, conclyle of lower jaw; 13, ramus of lower 

 jaw ; 14, position of the teeth to the right and left. 



The palatine bones form but a small portion of the roof of 

 the mouth. They are placed at the back part of the palate, 

 and surround the edge of the communication between the 

 posterior parts of the mouth and the nose. 



The lining of the roof of the mouth is the palate, composed 

 of a dense elastic substance divided into ridges termed bars. 

 The soft palate, or veil of the palate, is further back. It 

 extends from the crescentic margin of the palatine plates of 

 the palate-bones to the fibro-cartilaginous body covering the 

 orifice of the larynx, termed the epiglottis. The veil of the 



