hence derived, 9.

Goodwin Sands, 814.

Gothenburg, rise of land near, 526.

Graab, Capt., on subsidence of Greenland, 530.

Graham, Mrs., on earthquake of Chili in 1822, 459.

Graham Island, newly formed in 1831, 432.
----, supposed section of, 435.

Granite of the Hartz, Werner on, 47.
----, disintegration of, 221, 346.
----, formed at different periods, 177.
----, veins observed by Hutton in Glen Tilt, 51.

Grant, Capt., on Chilian earthquake, 462.

Graves, Capt., on diffusion of insects by winds, 656.
----, survey of Santorin by, 441.

Gray, Mr., on _Mytilus polymorphus_, 658.

Great Dismal Swamp, Virginia, 724.

Grecian Archipelago, new isles of the, 43.
----, volcanoes of the, 355, 442, 450.

Greece, earthquakes in, 355.
----, traditions of deluges in, 356.

Greeks, geology of, 13.

Greenland, why colder than Lapland, 94.
----, gradual subsidence of, 530, 562.
----, timber drifted to shores of, 745.

Grevllle, Dr., on drift sea-weed, 623.

Groins described, 818.

Grooves in rocks formed by glaciers, 155, 227, 228.

Grotto del Cane, 248.

Ground ice, 221.
----, transporting rocks in Baltic, 231.

Guadalonpe, human skeletons of 757.

Guatemala, active volcanoes in, 349.

Gulana, partly formed by sediment of Amazon, 342.

Guilding, Rev. L., on migration of Boa Constrictor, 646.

Guinea current, 296.

Guinea, New, mammalia of, 682.

Gulf stream, 96, 292, 294. 621.
----, stream aids migration of fish, 648.

Guyot, M., on glacier motion, 224.

Gyrogonite described, 766.

H.

Habitations of plants described, 614.

Hales, Dr., on epoch of the creation, 659.

Hall, Sir J., his experiments on rocks, 51.
----, Captain B., on flood in valley of Bagnes, 211.
----, on the trade-winds, 295.
----, on temple of Serapis, 512.
----, Mr., State Geologist of New York, 216, 218.
----, Mr. J., on temple of Serapis, 512.

Hamilton, Mr. W. J., on volcanoes near Smyrna, 355.
----, Sir W., on Herculaneum, 389.
----, on earthquake in Calabria, 473, 483, 485.
----, Sir W., on formation of Monte Nuovo, 367.
----, on eruption of Vesuvius in 1779, 377.

Hamilton, Sir C., on submerged houses in Port Royal, 504.

Hampshire, Brander on fossils of, 44.
----, submarine forest on coast of, 746.

Harcourt, Rev. W. V. V., on bones of mammoth, &c.,
in Yorkshire, 76.

Harris, H