Ostriches, Wallace on, i. 145;
Darwin on, 146-7

Owen, Sir R., Darwin's opinion of, i. 139;
attacks Darwin's theory, 142, 144, 157, 199

—— Robert, and Wallace, i. 15, ii. [139], [148], [182], [225]

—— Robert Dale, ii. [225]

P

Pacific Islands, land shells in, i. 133

Pain, Wallace on, ii. [244]

Pangenesis, i. 196 et seq., 219, 220, 276, ii. [102]

Panmixia, ii. [52], [53]

Papilio, polymorphic species of, i. 168