94 HISTORY OF THE 



CHAPTER V. 



Zoological Classification of the Horse — Its external structure — Teeth, 

 &c. — Size, Formation, Cdlour, Speed, &c. of the thorough-bred 

 Horse. 



Before proceeding further on the subject, we 

 consider it highly, if not absolutely necessary, 

 to give some explanation of the generic character 

 and external structure of the horse. 



The genus equus, or horse, is placed by the 

 great naturalist. Baron Cuvier, in the class 

 Mammalia, which contains those animals that 

 suckle their young, and forms the ninth genus of 

 his sixth order, called Pachydermata. 



The class Mammalia is still exceedingly large, 

 and we find it thus subdivided.^ 



1. Those whose extremities are divided into 

 fingers or toes, scientifically called unguiculata 

 from the Latin word for nail ; and, 2, those 

 whose extremities are hoofed, scientifically called, 

 ungulata, from the Latin word for hoof, 



* Library of Entertaining Knowledge, (Vol. I. p. 13). 



