THE HORSE. 



PIG. 6. LOWER NIPPERS AM) TUSHES AT FIVE TEARS OLD. 



1. 1. Central nippers, with their marks 



almost entirely worn out. 



2. 2. Next nippers, showing marks par- 



tially worn. 



3. 3. Corner nippers, with the mark plainly 



seen, but the edges partially worn. 



4. 4. Tushes, with the grooves inside almost 



obliterated. 



sixth molar is at its full growth, and the third is shed to make 

 room for the permanent tooth in its place. These two last-named 

 teeth should always be examined in cases where there is any doubt 

 about the age. After five years, no further shedding occurs in 

 any of the teeth. 



FlG. 7. THE LOWER NIPPERS AM) TUSIIEd OF A HX-YEAR-OU) HORSE. 



mark plainly enough, but with the 

 edges of the cavity considerably 

 worn. 



4. 4. The tushes, standing up three-quarters 

 of an inch, with their points only 



with the 



B. The lower jaw. 



1. 1. The central nippers 



marks worn out. 



2. 2. Tim next nippers, with the marks 



disappearing. 



3. 3. The corner nippers, showing the 



slightly blunted. 



