AGE OF THE HORSE. 



71 



is shown from figure three to figure four. The second section 

 of this tooth shows a six-year-old, and the third section shows a 

 twelve-year-old tooth. The fourth shows eighteen years old, 

 while the fifth, and lower section, shows twenty-four years. 



If the reader will carefully examine this illustration he will 

 notice that the upper section from one to two is twice as wide as 

 it is thick, while the lower section, showing the same tooth at 

 twenty-four years, will discover that it is twice as thick as it is 

 wide. 



The width is from one to two, and the thickness from three to 

 four. 



We will next call your attention to cut 19. 



No. 19. 

 Life-size inside view of five-year-old. 



This cut will represent a life-size, inside view, of the lower jaw 

 of a five-year-old, showing all the cups or marks in the teeth as 

 they would appear in the five-year-old mouth. N N the nippers, 

 M M the middle, C C the corner teeth. 



