MISCELLANEOUS. 



427 



7 years. The cups in center of teeth are large. 



8 years. A trifle smaller. 



9 years. Still smaller. 



11 years. Smaller. 



12 years. Cups in center of teeth are smaller and nearly round. 

 14 years. The teeth are round and cups have nearly disappeared, 

 1 6 years. Are a mere speck in the teeth ; scarcely discernible. 



1 8 years. The cups have worn away, and the teeth are round. 



