95 

 but on inspection there can be detected slight signs 

 of wear. The tables are not yet formed. The 

 anterior edges alone are rendered level ; all posterior 

 to the infundibulum being as yet untouched. The 

 tables then present the appearance indicated in the 

 following wood-cut, which also represents the semi- 

 circular order in which they are arranged. 



48. At five years off the corner teeth only show 

 wear, and the jjosterior margins are round. 

 Much of the original coating of the crusta petrosa 

 is retained, but in colour it may not at this time be 

 dark. At those places where it has been recently 

 worn down, it is often of a yellow tint, which 

 is but a little deeper than the enamel, which last, 



