on crossing wheat, ii. [104]-[105];
continuous variation of wheat, ii. [241].
Siam, cats of, i. 47; horses of, i. 53.
Shirley, E. P., on the fallow-deer, ii. [103], [120].
Short, D., hybrids of the domestic cat and Felis ornata, i, 45.
Siberia, northern range of wild horses in, i. 52.
Sichel, J., on the deafness of white cats with blue eyes, ii. [329].
Sidney, S., on the pedigrees of pigs, ii. [3];
on cross-reversion in pigs, ii. [35];
period of gestation in the pig, i. 74;