Faraday, Mr., on water of the Geysers, 246.
----, on slow deposition of sulphate of baryta, 343.
----, on electric currents In the earth, 543.
----, on metallic reduction by voltaic agency, 548.
----, on liquefaction of gases, 560.

Faroe Islands, deposits forming near the, 774.

Farquharson, Rev. J., on floods in Scotland, 208.
----, on formation of ground ice, 222.

Faujas, on Velay and Vivarais, 1779, 49.

Faults, 162.

Fauna formerly as diversified as now, 160.
----, arctic, described by Sir J. Richardson, 634.

Felspar, decomposition of, 247.

Ferrara on lavas of Etna, 283.
----, on floods on Etna, 412.
----, on earthquake in Sicily, 471.

Ferruginous springs, 247.

Fez, earthquakes in, 358.

Fife, trap rocks of, 160.
----, coast of, submarine forests on, 303.
----, encroachments of sea on, 203.

Findhorn town swept away by sea, 302.

Fish, their distribution, and migrations, 646.
----, fossil, 745.
----, fossil of coal formation, 136.

Fissures, sulphur, &c., ejected by, 470.
----, caused by Calabrian earthquake, 479, 480, 481.
----, caused by earthquake near New Madrid, 468.
----, preservation of organic remains in, 732.

Fitton, Dr., on history of English geology, 51.

Fitzroy, Capt., on earthquake in Chili, 1835, 453, 455.

Flamborough Head, waste of, 303.

Fleming, Dr., on uniformity in climate, 74.
----, on fossil elephant, 76.
----, on submarine forests, 303.
----, on rapid flight of birds, 646.
----, on turtles taken on coast of England, 645.
----, on changes in the animal kingdom caused by man, 683.
----, on stranding of cetacea, 771.

Flinders on coral reefs, 776, 791.

Flint on course of Mississippi, &c., 264, 265.
----, on earthquakes in Mississippi valley, 466.

Floods, by bursting of lakes, 269.
----, in North America, 209.
----, in valley of Bagnes, 210.
----, in Scotland, 207, 750.
----, traditions of, 499, 501.
----, causes which may give rise to, 156.
----, at Tivoli, 211.
----, caused by melting of snow by lava, 348, 411.
----, _See_ Deluge.

Flysch, of the Alps, eocene, 124.

Folkstone, subsidence of land at, 316.

Fontenelle, his eulogy on Palissy, 23.

Foot-marks, fossil, in North America, 136.

Forbes, Prof. E., on glacial epoch, 86.
----, on fossils of tertiary, 184.
----, on new island in Gulf of Santorin, 443.
----, on regions of