d, tameness of birds in, 597.
----, Archipelago, craters form hills in, 372.

Galongoon, great eruption of, 353, 430.

Gambier coral island, 783, 787.

Ganges, delta of, and Brahmapootra, 275 to 284.
----, antiquity of delta of, 281.
----, quantity of sediment in waters of, 278.
----, islands formed by the, 276.
----, bones of men found in delta of. 757.
----, artesian borings in delta of, 268.

Gardner, Mr., on unexplored Antarctic land, 99.

Gases, liquefaction of, 560.
----, evolved by volcanoes, 549.

Gefle, upraised shelly deposits near, 526, 528.

Gemmellaro on Etna, 408.
----, on ice under lava, 412.

Generation, spontaneous, theory of, 22.

Generelli. on state of geology in Europe in middle of eighteenth
century, 35, 53.

Geneva, lake of, delta of Rhone in, 252.

Geognosy of Werner, 46.

Geographical distribution of plants, 613.
----, of animals, 629.
----, of birds, 642.
----, of reptiles, 644.
----, of fishes, 646.
----, of testacea. 649.
----, of zoophytes, 653.

Geographical distribution of insects, 654.
----, of man, 659.

Geography, proofs of former changes in physical, 114,121.
----, effect of changes in, on species, 690.

Geological society of London, 59.
----, theories, causes of error in, 61.

Geology defined, 1.
----, distinct from cosmogony, 3.
----, causes of its retardation, 24, 55, 61.
----, state of, before eighteenth century, 86.
----, modern progress of, 58.

Georgia, Island of, snow to level of sea in, 99, 108.
----, U. S., new ravines formed in, 205.

Gerbanites, an Arabian sect, their doctrines, 14.

German Ocean, filling up, 340.

Gesner, John, on organic remains, 41.

Geysers of Iceland, 533, 553.
----, cause of their intermittent action, 555.

Gibraltar, birds' bones in breccia at, 740.
----, Straits of, 383.

Gironde, tides in its estuary, 338.

Glacial epoch, 75.

Glacier under lava, on Etna, 412.
----, moraines of, 223.
----, view of, 223.

Glaciers, formation of, 222 to 227.
----, motion of, 228.
----, of Spitzbergen, 96.
----, transportation of rocks by, 155.

Glen Tilt, granite veins of, 51.

Gloucestershire, gain of land in, 324.

Gmelin on distribution of fish, 648.

Goats, multiplication of, in South America, 686.

Goeppert, Prof., 87.
----, on fossilization of plants, 747.

Golden age, doctrine w