Stephen, Mr. L., on the difference in the minds of men and animals; on
general concepts in animals; distinction between material and formal
morality.
Sterility, general, of sole daughters; when crossed, a distinctive
character of species; under changed conditions.
Sterna, seasonal change of plumage in.
Stickleback, polygamous; male, courtship of the; male, brilliant
colouring of, during the breeding season; nidification of the.
Sticks used as implements and weapons by monkeys.
Sting in bees.
Stokes, Captain, on the habits of the great bower-bird.
Stoliczka, Dr., on colours in snakes.
Stoliczka, on the pre-anal pores of lizards.
Stonechat, young of the.
Stone implements, difficulty of making; as traces of extinct tribes.
Stones, used by monkeys for breaking hard fruits and as missiles; piles
of.
Stork, black, sexual differences in the bronchi of the; red beak of
the.
Storks, sexual difference in the colour of the eyes of.
Strange, Mr., on the satin bowerbird.
Strepsiceros kudu, horns of; markings of.
Stretch, Mr., on the numerical proportion in the sexes of chickens.
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