38 



ANATOMY 



The rate at which the teeth increase in length during their 

 formative period and prior to attrition is given in the following 

 table : 



TABLE 14 



Average growth of upper incisor 0.52 mm. and of lower incisor 0.88 mm. per 

 day. 



TABLE 15 



1 Same as 'squamosal distance,' figure 1, p. 36. 



