1910-11.] Bone Growth in absence of Functioning Testicles. 109 
Table XI. — Anterior and Posterior Heights of Body of Eleventh 
Thoracic Vertebra. 
A, Anterior 
Height. 
B, Posterior 
Height. 
Index : 
If A = 100, 
B = 
llth thoracic vertebra of 
mm. 
mm. 
subject No. A 9 
Normal llth thoracic 
19 
29 
152-6 
vertebra, average of ten 
Irish specimens 
22 
24 
109 
One effect of the position of the column must have been to throw the 
centre of gravity of the body forward. This subject is referred to later in 
connection with the description of the femur. 
The ossification of all the vertebrae is not complete. 
Cervical Vertebrae — Ossification complete. 
Thoracic Vertebrae — 1st and 2nd complete ; 3rd, 4th, and 5th, epiphyses 
for tips of spines not yet joined. 
6th and 7th complete. 
8th, 9th, and 10th, epiphyses for spines not yet 
joined. 
11th complete. 
12th, epiphysis for spine not yet joined. 
Lumbar — 1st and 2nd, epiphyses for spines not yet joined. 
3rd and 4th, epiphysial plates for upper and 
lower surfaces of bodies not yet completely 
joined. 
5th, epiphysis for spine not yet joined. 
3. Thorax. 
The sternum is a well-proportioned bone. Its total length is 163 mm., 
or 9 - 4 per cent, of the stature ; the usual percentage is 9 - 5 (12). 
The ribs are well formed and of normal shape. Their anterior 
extremities are not disproportionately large, as is the case in some giants. 
They are, in fact, rather slender in proportion to their length. This is well 
shown by the comparative figures in Table XII. 
In this table the length of the rib, measured with the steel tape round 
its convex border, is compared with the antero-posterior breadth of its 
anterior extremity, measured with calipers. 
