Bartram, on the black wolf-dog of Florida, i. 22.
Bates, H. W., refusal of wild animals to breed in captivity, ii. [150], [152];
sterility of American monkeys in captivity, ii. [153];
sterility of tamed guans, ii. [156].
Batrachia, regeneration of lost parts in, ii. [15].
Beach, raised, in Peru, containing heads of maize, i. 320.
Beak, variability of, in fowls, i. 258;
individual differences of, in pigeons, i. 160;
correlation of, with the feet in pigeons, i. 171-174.
Beale, Lionel, on the contents of cells, ii. [370];