parthenogenesis in, ii. [364].
Silkworms, variations of, i. 301-302;
yielding white cocoons, less liable to disease, ii. [336].
Silver-Grey rabbit, i. 108, 111, 120.
Simonds, J. B., period of maturity in various breeds of cattle, i. 87;
differences in the periods of dentition in sheep, i. 96;
on the teeth in cattle, sheep, &c., ii. [322];
on the breeding of superior rams, ii. [196].
Simon, on the raising of eggs of the silk-moth in China, ii. [197].
Simpson, Sir J., regenerative power of the human embryo, ii. [15].