266 THE HORSJE 



four, eight, fourteen and twenty years, respectively, as 

 shown by the dotted lines. It also shows clearly the 

 marked changes which occur in the shape of the teeth 

 when viewed in cross section. At from eleven to thirteen 

 years, as has been stated, all the cups disappear from 

 the upper incisors, after which there is difficulty in 

 accurately determining the age. However, if the shape 

 of the teeth is observed critically (Fig. 74), it will not be 

 at all difficult for a novice to distinguish between a 

 horse just past his prime, an old horse and a very old 

 horse. 



NOTE Throughout this chapter the terms "temporary teeth" 

 and "milk teeth," also the words "incisors" and "nipper-" have 

 been used synonomously. This is in recognition of the fact that 

 these terms are so used by many good horsemen. 



