ZOOLOGICAL CLASSIFICATION. 



63 



or G;rinders ; and these molar teeth have flat crowns with ridges of enamel, 

 and that enamel penetrating into the substance of the tooth. 



The whole is thus represented by natural historians, and the reader will 

 comprehend our meaning when we are speaking of other animals. 



Horse. — Incisors - Canines.^, Molar -i—^. Total 40 teeth. 



1-1' 



6—6 



Chapter VI. 

 THE EXTERNAL STRUCTURE OF THE HORSE 



The Head. 



The posterior maxillary or under jaw. 



The superior maxillary or upper jaw. Opposite to the letter is a foramen hrough 



wliich pass the nerves and blood-vessels which chiefly supply the lower part 



the face . 

 The orbit, or cavity containing the eye. 

 The nasal bones, or bones of the nose. 



The suture dividing the parietal bones below, from the occipital bones above. 

 The inferior maxillary bone containing the upper incisor teeth. 

 The Seven Cervical Vertebrae, or bones of the neck. 

 The Eighteen Dorsal Vertebrae, or bones of the back. 

 The Six Lumbar Vertebrae, or bones of the loins. 

 The Five Sacral Vertebrae, or bones of the haunch. 

 The Caudal Vertebrae, or bones of the tail, generally about fifteen. 



G The Scapula, or shoulderblade. 



/ 



