62 AGE OF THE HORSE. 



ing a groove on the outside surface ; while the four corner teeth 

 that remain in the jaw will be colt teeth, with no groove on the 

 outside surface, and the crown of the tooth will be worn perfectly 

 smooth, as represented in cut No. 7. 



No. 8. 



Inside of the lower jaw of a colt four years and a half old, with the tushes 

 and corner tooth through the gurn. 



Cut No. 8 is a representation of the lower jaw of a four-and- 

 half -year-old colt. It will be seen by the above cut, that all the 

 colt teeth are gone, but the corner teeth are not yet fully de- 

 veloped. These corner teeth will be full size at five years. Then, 

 all the teeth, nipper, middle, and corner, will be horse teeth, and 

 will all show the groove on the front except the corner teeth. 



No. 9. 

 Outside view of lower jaw at five years of age. 

 The above cut is a correct likeness of the outside view of the 



