+--------------------+-----------------+-------------------+-----------+ | | Length of Femur,| Length of Humerus,| | | Name of Breed. | Tibia, and | Radius, and | | | | Metatarsus | Metacarpus | Or as | | | together. | together. | | +--------------------+-----------------+-------------------+-----------+ | | Inches. | Inches. | | |Wild mallard | 7.14 | 9.28 | 100 : 129 | |Aylesbury | 8.64 | 10.43 | 100 : 120 | |Tufted (Dutch) | 8.25 | 9.83 | 100 : 119 | |Penguin | 7.12 | 8.78 | 100 : 123 | |Call | 6.20 | 7.77 | 100 : 125 | +--------------------+-----------------+-------------------+-----------+ | | Length of same | Length of all the | | | | Bones. | Bones of Wing. | | | +-----------------+-------------------+ | | | Inches. | Inches. | | |Wild duck | | | | |(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:--