segregation of, in Paraguay, ii. [102];
wild species of, breeding in captivity, ii. [150];
curly, in Paraguay, ii. [205], [325];
selection of, for trifling characters, ii. [209];
unconscious selection of, ii. [212]-[213];
natural selection in Circassia, ii. [225];
alteration of coat of, in coal-mines, ii. [278];
degeneration of, in the Falkland Islands, ii. [278];
diseases of, caused by shoeing, ii. [300];
feeding on meat, ii. [305];