1098 



Rural School Leaflet. 



Fig. 112. — Side view of 

 the teeth of a five-year- 

 old horse 



III . — Lower nippers of a 

 five-year-old horse 



year's wear. They have also changed slightly in shape, having become 

 rounder on the inside. The intermediate teeth show one year's wear. 



The cups show in all, 

 but are deepest and 

 freshest in appearance 

 in the corner teeth. 

 The tusks have en- 

 larged but are not yet 

 blunt. 



Six years old. — At 

 six years of age, the 

 cups in the lower jaw 

 have disappeared, or 

 nearly so, from the central teeth, have become smaller in the 

 intermediates, and the corner teeth are up and in full wear over their 

 entire surface. Figs. 113, 114. Sometimes, however, a horse has shelly 

 teeth, in which case the inside comer teeth may not be up and in wear; 

 in fact, they may never come up, but always have the appearance of 

 corner teeth that are not fully up. The center teeth have made marked 

 changes in shape, becoming quite roundish on the inside, and the inter- 

 mediates are also somewhat modified. If the horse's lips are parted 

 and the mouth viewed from the front, it will be noted that the central 

 ones will appear much darker colored and longer than they did at three 

 or four. This is due to the shrinking or receding of the gums. 



Seven years old. — At seven years of age, the cups have disappeared 

 from the intermediate teeth, although small dark spots may often be 

 seen. The corner teeth still retain their cups, though they are quite 

 shallow. 



The side view of a seven-year-old mouth shows one marked charac- 

 teristic. The lower 

 corner teeth seldom 

 extend as far back- 

 wards as the upper 

 ones do. Only in rare 

 cases do all four corner 

 teeth meet accurately. 

 The result is that the 

 face of the tooth in 

 the rear recedes, while 

 that part of the tooth not in wear projects downward, forming more or 

 less of a notch. 



Fig 



113 . — Lower nippers 

 a six-year-old horse 



Fig. 1 14. — Side view of the 

 teeth of a six-year-old 

 horse 



