Geological Observations on South America

Incrustations, saline.

Infusoria in Pampean formation. – in Patagonian formation.

Iodine, salts of.

Iquique, elevation of. – saliferous deposits of. – cretaceo-oolitic formation of.

Iron, oxide of, in lavas. – in sedimentary beds. – tendency in, to produce hollow concretions. – sulphate of.

Isabelle, M., on volcanic rocks of Banda Oriental.

Joints in clay-slate.

Jukes, Mr., on cleavage in Newfoundland.

Kamtschatka, andesite of.

Kane, Dr., on the production of carbonate of soda.

King George's sound, calcareous beds of.

Lakes, origin of. – fresh-water, near salt lakes.

Lava, basaltic, of S. Cruz. – claystone-porphyry, at Chiloe. – ancient submarine. – basaltic, of the Portillo range. – feldspathic, of the Cumbre Pass. – submarine, of the Uspallata range. – basaltic, of the Uspallata range. – submarine, of Coquimbo. – of Copiapo.

Lemus island.

Lemuy islet.

Lignite of Chiloe. – of Concepcion.

Lima, elevation of.

Lime, muriate of.

Limestone of Cumbre Pass. – of Coquimbo. – of Copiapo.

Lund and Clausen on remains of caves in Brazil.

Lund, M., on granites of Brazil.

Lyell, M., on upraised shells retaining their colours. – on terraces at Coquimbo. – on elevation near Lima. – on fossil horse's tooth. – on the boulder-formation being anterior to the extinction of North American mammifers. – on quadrupeds washed down by floods. – on age of American fossil mammifers. – on changes of climate. – on denudation. – on foliation.

MacCulloch, Dr., on concretions. – on beds of marble.

Maclaren, Mr., letter to, on coral-formations.

Macrauchenia Patachonica.

Madeira, subsidence of.

Magellan, Strait, elevation near, of.

Magnesia, sulphate of, in veins.

Malcolmson, Dr., on trees carried out to sea.

Maldonado, elevation of. – Pampean formation of. – crystalline rocks of.

Mammalia, fossil, of Bahia Blanca. – near St. Fe. – of Banda Oriental. – of St. Julian. – at Port Gallegos. – washed down by floods. – number of remains of, and range of, in Pampas.

Man, skeletons of (Brazil). – remains of, near Lima. – Indian, antiquity of.

Marble, beds of.

Maricongo, ravine of.

Marsden, on elevation of Sumatra.

Mastodon Andium, remains of. – range of.

Maypu, Rio, mouth of, with upraised shells. – gravel fringes of. – debouchement from the Cordillera.

Megalonyx, range of.

Megatherium, range of.

Miers, Mr., on elevated shells. – on the height of the Uspallata plain.

Minas, Las.

Mocha Island, elevation of. – tertiary form of. – subsidence at.

Molina, on a great flood.

Monte Hermoso, elevation of. – fossils of.

Monte Video, elevation of. – Pampean formation of. – crystalline rocks of.

Morris and Sharpe, Messrs., on the palaeozoic fossils of the Falklands.

Mud, Pampean. – long deposited on the same area.

Murchison, Sir R., on cleavage. – on waves transporting gravel. – on origin of salt formations. – on the relations of metalliferous veins and intrusive rocks. – on the absence of granite in the Ural.

Nautilus d'Orbignyanus.

Navidad, tertiary formations of, subsidence of.