97 



no infundibula may be distinguishable : even then, 

 however, on close inspection, the form of the cavity 

 will be discovered, marked out by a line of enamel, 

 and the space that is usually vacant filled up with a 

 substance, which in appearance differs little from the 

 ivory. The tables of the lateral incisors will be fully 

 formed, and the infundibula is rarely obliterated, 

 while its margin is always circumscribed and well 

 defined, as the previous wood-cuts will indicate. 



49. At six years of age, the corner teeth look 

 more firmly set, and their edges begin to he uneven; 

 they have become more square in the figure of the 

 external surface ; the edges of the teeth, when the 

 mouth is closed, fairly meet ; the round appearance of 

 the posterior border is nearly lost, and the teeth are 

 altogether of a most prominent character. The table 

 of the corner teeth, nevertheless, is still confined to 

 the part anterior to the infundibulum, which cavity is 

 not yet fairly circumscribed or surrounded by a level 

 margin. The infundibula may be lost in the central 

 incisors, and those of the lateral teeth may begin to 

 look shallow ; but more generally these cavities are 

 retained at six years old. The tables, likewise, have 



n 



