ERUPTION OF THE PERMANENT OR ADULT TEETH. 77 



dition of the molars. By reference to the table of the eruption 

 of these teeth it will be seen that the first permanent molar 

 appears between the thirtieth and thirty-second months, the 

 second at about three years, and the third at four to five years. 

 The same rule as given for the second period applies here also, 

 and a close comparison should be made of the comparative 

 wearing of the pincher, intermediate, and corner teetli, as the 

 first or second pair may be advanced in use and not correspond 

 to the freshness of the delayed later teeth. 



