FEATURES OF ANIMAL FORM 



45 



Three years. — By two and one half years the middle 

 pinchers are through, and at three they are leveled and in 



Fig. 20. — Lower jaw of the three-year-old colt. 



wear, while the milk intermediates are about to be shed 

 (Fig. 20). 



Four years. — At three and one half the permanent in- 

 termediates come through and at four they are leveled 

 and wearing. At this age the corner milk teeth mani- 

 fest the approach of the permanent corners (Figs. 21 

 and 22). 



Five years. — At four and a half the corners are shed, 

 the permanent corners appear and at five there is the so- 

 called full mouth, all permanent incisors being level and in 

 wear (Figs. 23 and 24). 



Six years. — The cups of the lower pinchers wear away 

 and the canine^ in males may appear (Figs. 25 and 26). 



Seven years. — The cups of the lower intermediates 



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