3 o6 



GENERAL SCIENCE 



grinding surfaces suited for the use of- coarse dry fodder. 

 Both horse and cow belong to the "order" of animals known 

 as the herbivora, as contrasted with the flesh-eating carnivora 

 such as the dog, cat, and tiger. The teeth of mammals 

 vary widely in number, form, and arrangement. The canine 

 teeth of the carnivora are fitted for grasping and tearing their 

 prey. Instead of being set closely together as in human 



FIG. 97. Teeth of a horse. 



beings the teeth of mammals generally are more or less 

 scattered along the jaws. In the horse the absence of teeth 

 between the molars in the back of the jaw and the incisors 

 in front leaves a place well suited for the bits of the harness. 



SUMMARY 



Unlike birds and the domestic fowls which hatch from eggs laid by 

 the parent bird, horses belong to the group known as mammals which 

 bring forth their young alive, and nourish them on milk from the body 

 of the parent. 



In the jaws of mammals generally the teeth are more or less scattered. 

 Advantage of this is taken when the horse is harnessed for driving. 

 The bits are put into its mouth in a place where teeth are lacking. 



