SIMON, on the raising of eggs of the silk-moth in China.
SIMONDS, J.B., period of maturity in various breeds of cattle. -differences in the periods of dentition in sheep. -on the teeth in cattle, sheep, etc. -on the breeding of superior rams.
SIMPSON, Sir J., regenerative power of the human embryo.
Siredon, breeding in the branchiferous stage.
SISKIN, breeding in captivity.
Sivatherium, resemblance of the, to Niata cattle.
SIZE, difference of, an obstacle to crossing.
SKIN, and its appendages, homologous. -hereditary affections of the.
SKIRVING, R.S., on pigeons settling on trees in Egypt.
SKULL, characters of the, in breeds of dogs. -in breeds of pigs. -in rabbits. -in breeds of pigeons. -in breeds of fowls. -in ducks.