Geological observations on the volcanic islands, visited during the voyage of H.M.S. Beagle, together with some brief notices on the geology of Australia and the Cape of Good Hope. Being the second part of the Geology of the voyage of the Beagle under the command of Capt. Fitzroy, R.N. during the years 1832 to 1836 / [Charles Darwin].

  • Darwin, Charles, 1809-1882.
Date:
1844
Catalogue details

Licence: Public Domain Mark

Credit: Geological observations on the volcanic islands, visited during the voyage of H.M.S. Beagle, together with some brief notices on the geology of Australia and the Cape of Good Hope. Being the second part of the Geology of the voyage of the Beagle under the command of Capt. Fitzroy, R.N. during the years 1832 to 1836 / [Charles Darwin]. Source: Wellcome Collection.

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    INDEX. Abel, M., on calcareous casts at the] Cape of Good Hope, 146 Abingdon Island, 104 Abrolhos Islands, incrustation on, 33 Aeriform explosions at Ascension, 39 Albatross, driven from St. Helena, 90 Albemarle Island, 103 Albite, at the Galapagos Archipelago, 104 Amygdaloidal cells, half filled, 27 Amygdaloids, calcareous origin of, 14 Ascension, 34 arborescent incrustation on rocks of, 33 absence of dikes, freedom from vol- canic action, and state of lava- streams, 92 Ascidia, extinction of, 141 Atlantic ocean, new volcanic focus in, 92 Augite fused, 111 Australia, 130 Azores, 24,125 Bahia in Brazil, dikes at, 123 Bailly, M., on the mountains of Mauri- tius, 29 Bald Head, 144 Banks’ Cove, 103, 107 Barn, The, St. Helena, 76 Basalt, specific gravity of, 120 Basaltic coast-mountains, at Mauri- tius, 29 at St. Helena, 80 at St. Jago, 17 Beaumont, M. Elie de, on circular sub- sidences in lava, 102 on dikes indicating elevation, 94 on inclination of lava-streams, 93 on laminated dikes, 70 iBeudant, M., on bombs, 37, 39 on jasper, 47 on laminated trachyte, 67 on obsidian of Hungary, 63 on silex in trachyte, 14, 46 Bermuda, calcareous rocks of, 144, 147 Bole, 139 Bombs, volcanic, 36 Borz, St. Vincent, on bombs, 37 Boulders, absence in Australia and the Cape of Good Hope, 152 of greenstone in New Zealand, 152 Brattle Island, 109 Brewster, Sir D., on a calcareo-animal substance, 54 on decomposed glass, 132 Brown, Mr. R., on extinct plants from Van Diemen’s Land, 140 on sphserulitic bodies in silicified wood, 62 Buch, Von, on cavernous lava, 103 on central volcanos, 127 on crystals sinking in obsidian, 117 on laminated lava, 66 on obsidian streams, 64 on olivine in basalt, 104 on superficial calcareous beds in the Canary Islands, 88 Calcareous deposit at St. Jago, affected by heat, 3—7 fibrous matter, entangled in streaks in scoriae, 11 freestone at Ascension, 49 incrustations at Ascension, 50 superficial beds at King George’s Sound, 144 sandstone, at St. Helena, 86 Cape of Good Hope, 148