112 Proceedings of the Royal Society of Edinburgh. [Sess. 
Table XV. — The Antero-Posterior Thickness of the Sternal End compared 
WITH THE AnTERO-PoSTERIOR BREADTH OF THE ACROMIAL End OF THE CLAVICLE. 
Antero -Posterior , thickness of Sternal End = 100. 
Sternal End. 
Acromial End. 
Index. 
mm. 
mm. 
Subject A 9 . 
Average of ten Irish 
15 
33 
220 
clavicles 
20-4 
22 
iy- 
108 
These tables indicate the great development of the acromial end of the 
bone (fig. 3). 
The ossification of the clavicle is not complete. In neither bone, indeed, 
is the normal epiphysial plate fully formed. In the right bone there is a 
small (mm. 7x9) epiphysial plate at the acromial extremity. In the left 
bone there is a smaller acromial epiphysis. 
2. The Scapula . — The measurements of the scapula are shown in 
Table XVI. 
Table XVI. — Measurements and Indices of the Scapula. 
Length 
Breadth 
Scapular index 
Infra-spinous length 
Infra-spinous index 
167 mm. 
106 mm. 
63 
135 mm. 
78-5 
Sir Wm. Turner gives the figures 65"3and 87'8 as the mean scapular and 
infra-scapular indices in the bones of Europeans. Both the indices of 
subject A 9’s scapula are smaller in value ; the macerated scapula is 
therefore unusually narrow, but the ossification of the bone is incomplete. 
Prior to maceration the vertebral border was extended by a broad strip of 
cartilage in which no bone centre had appeared. The epiphysis for the 
inferior angle is present, but is not joined. It is certain, therefore, that the 
bone had not reached its full development, and that it had not attained its 
definitive breadth. 
3. Humerus . — The humerus is a normal, smooth bone, which is only 
remarkable for the fact that its upper epiphysis has not joined the shaft. 
The nutrient foramina are of considerable size. The length of the bone is 
335 mm. 
4. Radius and Ulna . — The radius and ulna are normal, smooth bones, 
which are only remarkable for the fact that their lower epiphyses have not 
yet joined the shaft. The length of the radius is 259 mm. ; of the ulna, 
275 mm. 
