262 



TUE HORSE. 



PIG. b. — LOWER NIPPERS AND TUijUi-b .^T FI\ E TEARS OLD. 



1. 1. Central nipper.s, with their marks 



almost entirely worn out. 



2. 2. Next nippers, showing marks par- 



tially worn. 



3. 3. Corner nippers, with the mark plaiiilj 



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 case.s where there is any doubt 

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

 any of the teeth. 



FlO. 7.— THE LOWER NIPPERS AND TCSHES OF A bIX-\ EAR-OLD U0R8E 



The lower jaw. 

 I I. The central nippers, with the 



marks worn out. 

 3. 2. The next nippers, with the marks 



disappearing. 

 3. 3. The corner nippers, show"ng the 



mark plainly enough, but with th* 

 edges of the cavity considerably 

 worn. 

 4. The tushes, standing up three-quarteig 

 of an inch, with their points only 

 slightly blunted. 



