70 THE AGE. 



off for a four year old, as some months' keep 

 will thereby be saved. He therefore pulls out 

 a milk tooth on each side of the two central per- 

 manent ones, and then other two horse teeth 

 make their appearance much sooner than they 

 otherwise would, and the colt brings a four year 

 old price, while in fact he is but a few months 

 past three. This deception may sometimes be 

 detected by examining the grinders, but in 

 general the animal's youthful appearance is suffi- 

 cient to show that he is not yet fit for work. 



At three and a half years, other two perma- 

 nent teeth make their appearance, one on each 

 side of the central pair : and before the colt is 

 four years old, they are on a level with the 

 corner milk teeth, which are now yellow on the 

 wearing surface, and very small at the neck, 

 where it joins the gums. 



At four and a half, the corner teeth come up, 

 and by the time the animal is five years old, they 

 are level with the others. Before this time, if a 

 horse, he has likewise four tushes, and the colt 

 is now called a horse, and the filly a mare. A 

 few mares have tushes, but the majority have 

 none. 



At six years old, the "mark" is gone from 



