on temple of Ipsambul, 726.
----, on a flood of the Nile, 753.

Benin, currents in Bay of, 292.

Barard, M., on depth and temperature of Mediterranean, 296, 336.

Berkeley, on recent origin of man, 764.

Bermudas, only coral reef far out in Atlantic, 796.
----, coral reefs of the, 776, 778.

Bewick cited, 310, 643, 683.

Bhooj, in Cutch, destroyed by earthquake, 459.
----, volcanic eruption at, 460, 729.

Bies Bosch formed, 328.

Bigsby, Dr., on North American lakes, 768.

Birds, diffusion of plants by, 624.
----, geographical distribution of, 642, 663.
----, fossils in secondary rocks, 137.
----, tameness of, in uninhabited Islands, 597.
----, rate of flight of, 644.
----, migrations of, 643.
----, recent extermination of some species of, 683.
----, bones of, in Gibraltar breccia, 741.
----, rarity of their remains in new strata, 748.
----, rare in deposits of all ages, 137.

Bischoff, Professor, on volcanoes, 551.
----, on carbonic acid in extinct craters on Rhine, 248.

Biscoe, Capt., discoveries in south Polar Seas, 99.

Bison, fossil, in Yorkshire, 76.

Bisons, in Mississippi valley, 636.

Bistineau lake, 269.

Bitumen, oozing from bottom of sea, near Trinidad, 250.

Bituminous springs, 250.

Black Sea, salt by evaporation in, 335.
----, _See_ Euxine.

Blue mountains in Jamaica, 505.

Bluffs of Mississippi described, 264.

Boa constrictor, migration of, 646.

Boase, Mr., on inroads of sea in Cornwall, 323.
----, on drift-sand in Cornwall, 728.

Boblaye, M., on ceramique, in Morea, 731.
----, on engulfed rivers and caves in Morea, 734.
----, on earthquakes in Greece, 736.

Bog iron-ore, whence derived, 722.

Bogota, earthquake of, 457.

Bonpland, on plants common to Old and New World, 614.

Bore, a tidal wave frequent in Bristol Channel and Ganges, 332.

Bory de St. Vincent, M., on isle of Santorin, 445.

Bosphorus, 334.
----, traditions of deluges on shores of the, 356.

Botanical evidence bearing on theory of progressive development, 133.
----, geography, 613.
----, provinces, their number, 616, 666, 668.

Bothnia, Gulf, gradual elevation of coast of, 520.

Bourbon, island, volcanic, 546.

Bournmouth, submarine forest at, 746.

Boussingault. M., on volcanoes in Andes, 348.
----, on gases evolved by volcanoes, 549.

Bowen, Lieut., on drifting of rocks by