CHAPTER III. 



THE STRUCTURE OF THE HORSE, CHIEFLY AS BEARING 

 UPON ITS MODE OF LIFE, ITS EVOLUTION, AND ITS 

 RELATION TO OTHER ANIMAL FORMS. 



THE HEAD AND NECK. 



The skull — The teeth : their number ; general characters and 

 structure ; crown, root, pulp, dentine, enamel, and ce- 

 ment — Succession of teeth — Temporary and permanent 

 sets — Special characters of the teeth of the horse — In- 

 cisors — Canines — Diastema — Molars — Brachydont and 

 hypsodont dentition — Temporary, or milk-teeth — Time of 

 appearance and order of succession of the teeth — The lips 

 — The nostrils — The false nostrils — The guttural pouches 

 — The neck — Vertebras — Cervical ligament. 



Next to the body of man, there is none of which 

 the anatomy has been more thoroughly worked out 

 and more minutely described than that of the horse. 

 It is, in fact, the one other animal body that is made 

 the regular subject of dissection by a whole profes- 

 sion of students, and to which numerous special 

 treatises are devoted. Monographs on its structure, 

 many of them copiously and beautifully illustrated, 



