432 



NAVIX ON" THE HORSE. 



At the time it is foaled the colt will be found to have four 

 teeth in each jaw, two on either side, making eight in all ; these 

 are the first and second grinders. 



At from seven to nine days old, two nippers 

 in each jaw will be found to have made their 

 appearance. They are usually not entirely visi- 

 ble until the ninth day. They fill the mouth 

 from side to side, apparently, though they Avill 

 be found to be small when compared with the 



Lf M permanent teeth. By the time he is one month 

 -^ — ^ old, he will be found to have the third pair of 



grinders in each jaw, making in all twelve grinders. 



When he is six weeks old he gets another, or second, pair 

 of nip2:>ers in each jaw, making four nippers in each jaw, or 

 eight in all. At this time the middle nippers will be about 

 two-thirds grown, and at the end of two months will have 

 reached their full length, and in a month more, that is, when 

 the colt is three months old, the second pair will have reached 

 the hight of the fii'st. They then show a sharp edge to the 

 outside, but commencing to wear, they will have come to a level 

 about the ninth month of the colt's age. 



At this time, the ninth month, another pair 

 of nippers start up in each jaw, outside of the 

 second pair. The mouth will then 23resent 

 tweWe nippers, or incisors, six above and six 

 below. This is called the coWs month. JN'o 

 further change, except in the wear of these 

 teeth, is observed until the colt is between two 

 and three years old ; and some of these tem- 

 porary teeth remain until he reaches the age 

 of five years. 



Before proceeding further in the description of the changes 

 which the teeth undergo, I shall give a brief description' of the 

 structure of the teeth. . The germs, or seeds, of all the teeth, 

 both of the milk-teeth and the permanent set, may be found 



