1910-11.] Bone Growth in absence of Functioning Testicles. 123 
In each of the castrated animals the penis remained undeveloped. 
On examination of the bodies, naked-eye, there was no marked increase 
in the amount of fat in the castrated animals, in spite of their slightly 
greater weight. The bones of the skeletons were somewhat bigger than 
those of the entire male, being not only longer but thicker. 
The measurements of the long bones of the limbs, and their percentage 
increase, as compared with those of the control, are given in Table XXXII. 
Table XXXII. 
Control. 
No. 1, Castrated. 
No. 2, Castrated. 
Len 
gth. 
R. 
L. 
R. 
L. 
E,. 
L. 
Length. 
Increase 
per cent. 
Length. 
Increase 
per cent. 
Length. 
Increase 
per cent. 
Length. 
Increase 
per cent. 
Femur 
44 
44 
46-| 
5-6 
47 
6-8 
47 i 
7*9 
47 
6-8 
Tibia 
46£ 
46i 
49J 
6-4 
50 
7-5 
50lr 
8-6 
50j 
8 
Humerus . 
38" 
38" 
39 
2-6 
39 
2*6 
40f 
7 
41 
9 
Ulna 
42 
42£ 
44 
4-7 
43 
1*7 
43 
2 
43 
T7 
The paws of the castrated animals were exceedingly large. This 
enlargement was so striking that it suggested acromegaly, and the pitui- 
taries were examined, with negative results. 
Ossification was complete in the control ; none of the epiphysial 
cartilages of the castrated animals had disappeared. 
Observation B 3 (3). 
Poncet carried out experiments upon dogs and upon bitches. 
A litter of five pups — two dogs and three bitches — was taken. One dog 
and two bitches were castrated, the remaining dog and bitch being kept as 
controls. Some months later the five animals were killed and their bones 
examined. The measurements and percentage increases in the dog are 
given in Table XXXIII. ; in the bitches, in Table XXXIY. 
Table XXXIII. 
Length in mm. of Bone of 
Percentage 
Name of Bone. 
of Excess 
of Length. 
A, Control. 
B, Castrated Animal. 
Femur 
14 
17 
21*4 
Tibia . 
50 
56 
12 
