| | | |
|(another specimen) | 6.85 | 10.07 | 100 : 147 |
|Common domestic duck| 8.15 | 11.26 | 100 : 138 |
+--------------------+-----------------+-------------------+-----------+

{285}

In the foregoing table we see that, in comparison with the wild duck,
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 the following table:--

+--------------------+-----------------+-------------------+-----------+
| | Weight of Femur,| Weight of | |
| Name of Breed. | Tibia, and | Humerus, Radius, | |
| | Metatarsus | and Metacarpus | Or as |
+--------------------+-----------------+-------------------+-----------+
| | Grains. | Grains. | |
|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 |
+--------------------+-----------------+-------------------+-----------+
| |Weight of all the| Weight of all the | |
| | Bones of the | Bones of the | |
| | Leg and Foot. | Wing. | |
| +-----------------+-------------------+ |
| | Grains. | Grains. | |
|Wild duck | | | |
|(another specimen) | 66 | 115 | 100 : 173 |
|Common domestic duck| 127 | 158 | 100 : 124 |
+--------------------+-----------------+-------------------+-----------+