Sacrifices, human.
Sagittal crest, in male apes and Australians.
Sahara, fertility of mixed races in; birds of the; animal inhabitants of the.
Sailors, growth of, delayed by conditions of life; long-sighted.
Sailors and soldiers, difference in the proportions of.
St. John, Mr., on the attachment of mated birds.
St. Kilda, beards of the inhabitants of.
Salmo eriox, and Salmo umbla, colouring of the male, during the breeding season.
Salmo lycaodon.
Salmo salar.