96 HISTORY OF THE 



fore the horse ranks under the division vertebrata ; 

 the class mammaUa ; the tribe ungulata ; the 

 order pachydermata ; and the family solipeda. 



The solipeda consists of several species, as the 

 horse, the ass, the mule, and the quagga. 



First stands the Equus Caballus, or Common 

 Horse. 



Animals are likewise distinguished according 

 to the number, description, and situation of their 

 teeth. The horse has six incisers or cutting 

 teeth, in the front of each jaw, and one canine 

 tooth, or tusk. 



On each side, above and below, and at some 

 distance from the incisers, behind the canines, 

 and with some intervening space, are six molar 

 teeth, or grinders ; 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 his- 

 torians, and the reader will comprehend our 

 meaning, when we are speaking of other ani- 

 mals. 



Horse incisers ^, canine u, molar n ; total, forty 

 teeth. 



In the Linneean arrangement, the horse is placed 

 with the hippopotamos, as a genus of the order 

 Belinse ; according to Erxlebar, it ranks between 

 the elephant and the dromedary. 



Storr made a separate order of it, he followed 



