Wild duck (another specimen). 6.85 10.07 100:147
Common domestic duck. 8.15 11.26 100:138
In table 8.I we see, by comparison with the wild duck, that the reduction in the length of the bones of the wing, relatively to those of the legs, though slight, is universal. The reduction is least in the Call duck, which has the power and the habit of frequently flying.
In weight there is a greater relative difference between the bones of the leg and wing, as may be seen in Table 8.II:
TABLE 8.II.a.
COLUMN 1. Weight of Femur, Tibia, and Metatarsus (grains).
COLUMN 2. Weight of Humerus, Radius, and Metacarpus (grains).
COLUMN 3. Or as (ratio).
Name of Breed. 1. 2. 3.
Wild mallard. 54 97 100:179
Aylesbury. 164 204 100:124
Hooked-bill. 107 160 100:149
Tufted (Dutch). 111 148 100:133
Penguin. 75 90.5 100:120
Labrador. 141 165 100:117
Call. 57 93 100:163
TABLE 8.II.b.