Osborne, Dr., inherited mottling of the iris, ii. [10].
Osprey, preying on Black-fowls, ii. [230].
Osten-Sacken, Baron, on American oak galls, ii. [282].
Osteological characters of pigs, i. 66, 67, 71-74;
of rabbits, i. 115-130;
of pigeons, i. 162-167;
of ducks, i. 282-284.
Ostrich, diminished fertility of the, in captivity, ii. [156].
Ostyaks, selection of dogs by the, ii. [206].
Otter, ii. [151].