DIGESTION 



121 



canines stand next, one on each side of the jaw; these receive 

 their name from their resemblance to the long, pointed tusks 

 of the dog. (Fig. 25). 



11. The bicuspids, next in order, are larger and have a 

 broader crown than the former; while behind them are the 

 molars, the largest and most powerful of the entire set. These 



2' 1' 



FIG. 24. SECTION OP THE JAWS 

 I' 2' 3' 4' 5', The Milk Teeth ; 1* to 8", The Germs of the Permanent Set 



large back teeth, or " grinders," present a broad, rough surface, 

 suitable for holding and crushing the food. The third molar, 

 or wisdom tooth," is the last to be cut, and does not appear 

 until about the twenty-first year. The arrangement of the 

 teeth is indicated by the following dental formula : 



-3 



c/N, 



