280 MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 



J. Alveolar external posterior width : Taken at the junction of the exterior arch and the pan 

 coupe which is behind the wisdom tooth beneath the articulation of the pterygoid apophysis. 

 K. Anterior palatine width: Taken between canine and second incisor. 

 M. Posterior palatine width. 

 P. Palatine depth. 

 Q. Height and width of the posterior branch of mandible : Height from angle to upper edge of 



condyle; width at right angle with the above. 



K. External bicondylar width: Taken between the outer edges of the condyles of mandible. 

 S. Basilo-mental radius. 

 IT. Superior alveolar radius. 

 V. Nasal radius. 

 W. Inter superciliary radius. 

 X. Metopic radius. 

 Y. Obelic radius. 

 Z. Inial radius. 



d. Anterior projection of the cranium or pre-basilar projection. 



e. Posterior projection of the cranium or post basilar projection. 

 /. Superior facial projection or projection of the ophryon. 



The above three (d, e, and/) should be taken with regard to alveolo-condylean plane. 



