WONDERFUL TEETH AND TONGUES 235 



in order supply their jjlace, new teeth Ijeing 

 formed at the bacl-i to succeed the others. 



Lest any incredulous reader should disbelieve 

 the statement as to this vast number of teeth, I 



^?'^ 



I''ig. 156. Portion of palate of edible snail 

 showinti its niimerotis teeth 



would ask him to study the micrograph (Fig. 156) 

 of a portion of the palate or tongue of a snail with 

 its numerous rows of teeth, as seen by the micro- 

 scope. This ribbon ot teeth serves as a sort ot 

 rasp whereby our vegetables can speedily be cut 

 clown, as every gardener knows. 



By means of these tiny and wonderful teeth 



