increase of fertility by domestication, ii. [111];
improvement of plants by unconscious selection, ii. [216];
theory of reproduction, ii. [375].
Bulimus, ii. [53].
Bull, apparent influence of, on offspring, ii. [68].
Bullace, i. 345.
Bulldog, recent modifications of, i. 42.
Bullfinch, breeding in captivity, ii. [154];
attacking flower-buds, ii. [232].
Bult, Mr., selection of pouter pigeons, ii. [197].