OUR BEST FEATURES 



first Jiomytoofh 

 eploferm^ 

 bemath tooth ^^_^ 



epidermis 



germ , ^^ 



toot}? ^^^^^2ss? 't:^:^^^/'^ 



nutmiire papUia of 

 J\ ctermis^ 



Fig. 60. Development of Teeth in Lamprey (A) and Shark 

 (B, C, D). (After Goodrich.) 



For details, see p. xxvi. 



