106 Proceedings of the Royal Society of Edinburgh. [Sess. 
Table IV. — Mandibular Symphysial Height compared with 
Naso-alyeolar Height. 
Naso- Alveolar Height = 100. 
Symphysial 
Height. 
Naso- Alveolar 
Height. 
Index. 
mm. 
mm. 
Subject A 9 
34 
68 
50 
Three Irish mandibles . 
34 
73-4 
46-5 
The shortness of the naso-alveolar height in subject A 9 accentuates the 
symphysial massiveness. Its amount is more truly indicated in the 
following tables, in which the condylar height is compared with the cranial 
circumference, and then with the symphysial height. 
Table V. — Condylar Height compared with Cranial Circumference. 
Cranial Circumference = 100. 
Condylar 
Height. 
Cranial 
Circumference. 
Index. 
mm. 
mm. 
Subject A 9 . 
66 
504 
13 
Three Irish mandibles . 
70 
526 
13-3 
Table VI. — Symphysial Height compared with Condylar Height. 
Condylar Height = 100. 
Symphysial 
Height. 
Condylar 
Height. 
Index. 
mm. 
mm. 
Subject A 9 
34 
66 
51-5 
Three Irish mandibles . 
34 
70 
48-5 
Table V. shows that in relation to cranial circumference the condylar 
height of the mandible of A 9 is normal ; Table VI., that in relation to 
condylar height the symphysis of A 9 is of unusual depth. 
Summary of Analysis of Skull Measurements. 
The skull is smaller than the average Irish skull, although the stature 
of the individual is slightly greater than the average stature. Its propor- 
tions are, however, nearly normal, the chief points in which it diverges from 
the average condition being — 
1. The small size of the body of the superior maxilla. 
