ART. ü.-S. YOSHIWARA AND J. TWASAKI. 



Fig. 1. 



Section of I.oU at tlie 

 distance of 7.8«=™ from 

 the summit (nat. size). 



C Cement. 

 D Dentine. 

 F Pulp. 



Fig. 2. 



Section of Loi., at the 

 distance of 3.2cm from 

 the summit (nat. size). 



<' Cement. 

 D Dentine. 



Fis. 3. 



Diagrammatic transverse section of skull at tlie distance of 

 15cm from the anterior extremity of the upper jaw. (J nat. size). 

 Up I Upper incisor. Lo 7i First lower incisor. 

 Lo In Second lower incisor. 



Fig. 4. 



Diagrammatic transverse section of skull at the distance of 

 22cm from the anterior extremity of upper jaw. (^ nat. size). 

 /,o fj First lower incisor . J-O J^ Second lower incisor. 



