enamel which surrounds the hollow. In the corner 

 cutting- teeth the cavities are surrounded by a 

 line of worn surface. At 7 years the table sur- 

 face or surface where the teeth meet is fully 

 formed and the cavity very shallow. The central 

 enamel is egg-shaped but rather large and nearer 

 the rear portion of the tooth. The cavities of the 

 lateral cutting teeth are egg-shaped, but nearly 

 worn out of the teeth. In the central incisors or 

 cutting teeth the central enamel is like a triangle. 

 At 8 years the central enamel of the lateral cut- 

 ting teeth is like a triangle and the cavities near- 

 ly gone. At 9 years the age of the horse cannot be 

 accurately told, however; the angle at which the 

 teeth stand and the enamel on the flat surface of 

 the teeth with cavities almost gone will determine 

 the age. At the tenth year the central enamel of 

 the middle incisors has disappeared and the cen- 

 tral enamel of the side incisors is round and is at 

 the rear border, and the enamel of the corner in- 

 cisors is egg-shaped. At the eleventh year the. 

 enamel of the side incisors has disappeared and 

 that of the corner incisors is rounded. At 12 the 

 enamel of the corner incisors has disappeared. At 

 13 the flat surface of the central incisors has the 

 shape of a triangle. At 14 the flat surface of the 

 side incisors has the shape of a triangle. At 15 

 the flat surface of the corner incisors has taken. 

 the shape of a triangle. After this year it is diffi- 

 cult to tell the age of a horse by the teeth alone. 



The Temporary and Permanent Teeth of the 

 Horse. 



Temporary. 

 Incisors — Three upper on each side, and; 

 three lower on each side. 

 Canines — None. 



