TWO PERMANENT TEETH 251 



colt (Fig. 63) be compared with those of the one 

 nearly a year old (Fig. 61), it is seen that the cups, 

 " marks," of the central nippers of the two-year-old 

 have nearly or quite disappeared, although a little 

 discoloration usually remains in the center of the 

 teeth. There is still a slight mark in the laterals, 

 and the marks in the corner nippers are fairly deep, 



FIG. 64. Lower nippers at 

 turee years of age. 



It may be said that they are much deeper in the corner 

 teeth when the colt is but a little past two years than 

 they are when the colt approaches three years of age 



When the colt reaches the age of about two years, 

 nine months, the roots of the central nippers are 

 usually nearly absorbed and the permanent central 

 nippers, if not already in evidence, will soon make 

 their appearance. 



When the colt is shedding teeth its mouth should 



