79 



In the above representation of the table of a three 

 year old tooth, it will be remarked that the infun- 

 dibulum appears in the outward direction to extend 

 quite across the surface. This aspect is produced by 

 an indentation at that part, which, by the completion 

 of the third year, is in most instances not worn out, 

 but after the third year is attained, it speedily dis- 

 appears ; so the table of the three year off has be- 

 come somewhat broader, and the infundibulum cir- 

 cumscribed, or well defined, as it is shown in the 

 subjoined wood-cut. 



In fact, the shape of the table is here the best 

 guide, and should be carefully studied, as otherwise 

 the judgment can never be assured. At this age, one 

 tush may be peeping through. I have never seen 

 more than one present at three years, and then these 

 teeth have always been slightly developed, rather in- 

 dicating what was to grow than exhibiting that which 



