ether
--of crosses
--proportions of body in different breeds, when young

Domestication, variation under

Double flowers

Downing, Mr., on fruit-trees in America

Dragon-flies, intestines of

Drift-timber

Driver-ant

Drones killed by other bees

Duck, domestic, wings of, reduced
--beak of
--logger-headed

Duckweed

Dugong, affinities of

Dung-beetles with deficient tarsi

Dyticus

Earl, Mr., W., on the Malay Archipelago

Ears, drooping, in domestic animals
--rudimentary

Earth, seeds in roots of trees
--charged with seeds

Echinodermata, their pedicellariae

Eciton

Economy of organisation

Edentata, teeth and hair
--fossil species of

Edwards, Milne, on physiological division of labour
--on gradations of structure

Edwards, on embryological characters

Eggs, young birds escaping from

Egypt, productions of, not modified

Electric organs

Elephant, rate of increase
--of Glacial period

Embryology

Eozoon Canadense

Epilipsy inherited

Existence, struggle for
--condition of

Extinction, as bearing on natural selection
--of domestic varieties

Eye, structure of
--correction for aberration

Eyes, reduced, in moles

Fabre, M., on hymenoptera fighting
--on parasitic sphex
--on Sitaris

Falconer, Dr., on naturalisation of plants in India
--on elephants and mastodons
--and Cautley on mammals of sub-Himalayan beds

Falkland Islands, wolf of

Faults

Faunas, marine

Fear, instinctive, in birds

Feet of birds, young molluscs adhering to

Fertilisation variously effected

Fertility of hybrids
--from slight changes in conditions
--of crossed varieties

Fir-trees destroyed by cattle
--pollen of

Fish, flying
--teleostean, sudden appearance of
--eating seeds
--fresh-water, distribution of

Fishes, ganoid, now confined to fresh water
--ganoid, living in fresh water
--electric organs of
--of southern hemisphere

Flight, powers of, how acquired

Flint-tools, proving antiquity of man

Flower, Prof., on the larynx
--on Halitherium
--on the resemblance between the jaws of the dog and Thylacinus
--on the homology of the feet of certain marsupials

Flowers, structure of
--in relation to crossing
--of composite and umbelliferae
--beauty of
--double

Flysch formation, destitute of organic remains

Forbes, Mr. D., on gla