-on post-Miocene land.
-Polarity theory.
-on British shells.
-too speculative.
-on subsidence.
-visits Down.
-mentioned.
-royal medal awarded to.
-essay on connection between distribution of existing fauna and flora of
the British Isles and geological changes.

Forbes, H.O., on Melastoma.

Force and Matter, Huxley on.

Forel, Auguste: the distinguished author of "Les Fourmis de la Suisse,"
Zurich, 1874, and of a long series of well-known papers.
-on ants and beetles.
-author of "Les Fourmis de la Suisse."
-letter to.

Forfarshire, Lyell on glaciers of.

"Forms of Flowers," De Candolle's criticism of Darwin's.
homomorphic and heteromorphic unions described in.

Forsyth-Major, zoological expedition to Madagascar.

"Fortnightly Review," Huxley's article on Positivism.
Romanes on Evolution.

Fossil Cephalopods, Hyatt on.

Fossil corals.

Fossil plants, small proportion of.
of Australia.
sudden appearance of Angiosperms indicated by.

Fossil seeds, supposed vivification of.

Fossils as evidence of variability.

Fournier, E., De la Fecundation dans les Phanerogames.

Fowls, difference in sexes.
-purred female.

Fox, tails of, used by Esquimaux as respirators.

Fox, Rev. W. Darwin.

Foxglove, use of hairs in flower.

France, edition of "Origin" in.
-opinion favourable to Darwin's views in.
-birth-rate.

Franco-Prussian war, opinion in England.
-Science retarded by.

Frank, Albert Bernhard (1839-1900): began his botanical career as
Curator of the University Herbarium, Leipzig, where he afterwards became
Privatdocent and finally "Ausserordentlicher Professor." In 1881 Frank
was appointed Professor of Plant-Physiology in the Landwirthschaftliche
Hochschule, Berlin. In 1899 he was appointed to the Imperial
Gesundheits-Amt in Berlin, and raised to the rank of Regierungsrath.
Frank is chiefly known for his work on "The Assimilation of Free
Nitrogen, etc.," and for his work on "The Diseases of Plants" ("Die
Krankheiten der Pflanzen," 1880). It was his brilliant researches on
growth-curvature ("Beitrage zur Pflanzen-physiologie," 1868, and "Die
Naturlichen wagerechte Richtung von Pflanzen-theilen," 1870) which
excited Darwin's admiration.
-Darwin's admiration for his work.

Franklin, Sir J., search expedition.

Fraser, G., letter to.

"Fraser's Magazine," article by Hopkins.
-article by Galton on twins.
-Huxley on review in.