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.
Salmon, leaping out of fresh water; male, ready to breed before the
female; proportion of the sexes in; male, pugnacity of the; male,
characters of, during the breeding season; spawning of the; breeding of
immature male.
Salvin, O., inheritance of mutilated feathers; on the Humming-birds; on
the numerical proportion of the sexes in Humming-birds; on Chamaepetes
and Penelope; on Selasphorus platycercus; Pipra deliciosa; on
Chasmorhynchus.
Samoa Islands, beardlessness of the natives of.
Sandhoppers, claspers of male.
Sand-skipper.
Sandwich Islands, variation in the skulls of the natives of the;
788