32 LESSONS IN HORSE JUDGING. 



tooth, dips into the tooth and forms a Uttle sack- 

 like cavity filled up with black material {E 5). 

 Now suppose you cut off with a saw a piece of 

 the cutting surface, say through the line Ell 

 then you see on the surface of such a section in 

 their order either way : — 



Enamel : Dentine : Enamel : I Enamel : Dentine : Enamel. 



And you must remember the ^ enamel' is white, 

 and the ' dentine' gray. Now see if you can make 

 out these in Fig. 4, D, which shows four sections 

 of a tooth, such as we made at ^ 1 1. Notice 

 the four sections of this tooth, and you see in the 

 top section the appearances we have described 

 very distinctly. You see the outer rim of white 

 enamel which is called encircling enamel: then a 

 broad circle of grciy dentine: then a small circle 

 of enamel called the central enamel, and this 

 encloses the black material in the centre. So 

 much for the top section, but before drawing your 

 attention to the three sections below, I must first 

 tell you that a nipper tooth gets gradually nar- 

 roiver from the cutting surface to the end of its 

 fang, and whilst at its largest, from five or six 

 years old to seven or eight, its upper cutting sur- 

 face is somewhat ovoid, with the long axis from 

 side to side having two sharp angles in front at 

 either end. From this ovoid form it gradually 

 becomes triangular, and it only remains to add 

 that the dei3ression in the tooth filled up by black 

 material only reaches a little way down the tooth, 

 and then you will be able to refer to the three 

 lower sections of Fig. 4, D, to see the change in 



