THE POINTS OF THE HORSE, ETC. 



41 



Between four and five years the tush is cut ; at first it has a sharp The tush, 

 point and edges, but these gradually become rounded with age. 



At six years the corner teeth are in full wear over their whole surface, At six 

 the marks are broad, but those of the central teeth are smaller, and show years, 

 more wear than those of the laterals and the laterals more than the 

 corners. The wearing surfaces of the teeth are broad ones, the centrals 

 showing perhaps a tendency to become triangular. 



Fig. 10. — Six 3'ears. 



Wiih the mouth closed and looked at from the side the teeth are 

 upright and meet each other squarely, the upper corner tooth projecting 

 slightly beyond that of the lower jaw, at the posterior corner. 



From six years 07i'wards the changes are as follows : — Changes 



The marks get smaller, rounder, and may disappear from the central after six 

 teeth at about ten years. In some teeth, however, they persist for much years. 



