Display, coloration of Lepidoptera for; of plumage by male birds.

Distribution, wide, of man; geographical, as evidence of specific distinctness in man.

Disuse, effects of, in producing rudimentary organs; and use of parts, effects of; of parts, influence of, on the races of men.

Divorce, freedom of, among the Charruas.

Dixon, E.S., on the pairing of different species of geese; on the courtship of peafowl.

Dobrizhoffer, on the marriage-customs of the Abipones.

Dobson, Dr., on the Cheiroptera; scent-glands of bats; frugivorous bats.

Dogs, suffering from tertian ague; memory of; dreaming; diverging when drawing sledges over thin ice; exercise of reasoning faculties by; domestic, progress of, in moral qualities; distinct tones uttered by; parallelism between his affection for his master and religious feeling; sociability of the; sympathy of, with a sick cat; sympathy of, with his master; their possession of conscience; possible use of the hair on the fore-legs of the; races of the; numerical proportion of male and female births in; sexual affection between individuals of; howling at certain notes; rolling in carrion.

Dolichocephalic structure, possible cause of.

Dolphins, nakedness of.