Darwin, Mount.
D'Aubuisson, on concretions. – on foliated rocks. Decay, gradual, of upraised shells.
Decomposition of granite rocks.
De la Beche, Sir H., his theoretical researches in geology. – on the action of salt on calcareous rocks. – on bent cleavage-laminae.
Denudation on coast of Patagonia. – great powers of. – of the Portillo range.
Deposits, saline.
Despoblado, valley of.
Detritus, nature of, in Cordillera.
Devonshire, bent cleavage in.
Dikes, in gneiss of Brazil. – near Rio de Janeiro. – pseudo, at Port Desire. – in Tierra del Fuego. – in Chonos archipelago, containing quartz. – near Concepcion, with quartz. – granitic-porphyritic, at Valparaiso. – rarely vesicular in Cordillera. – absent in the central ridges of the Portillo pass. – of the Portillo range, with grains of quartz. – intersecting each other often. – numerous at Copiapo.
Domeyko, M., on the silver mines of Coquimbo. on the fossils of Coquimbo.
D'Orbigny, M. A., on upraised shells of Monte Video. – on elevated shells at St. Pedro. – on elevated shells near B. Ayres. – on elevation of S. Blas. – on the sudden elevation of La Plata. – on elevated shells near Cobija. – on elevated shells near Arica. – on the climate of Peru. – on salt deposits of Cobija. – on crystals of gypsum in salt-lakes. – on absence of gypsum in the Pampean formation. – on fossil remains from Bahia Blanca. – on fossil remains from the banks of the Parana. – on the geology of St. Fe. – on the age of Pampean formation. – on the Mastodon Andium. – on the geology of the Rio Negro. – on the character of the Patagonian fossils. – on fossils from Concepcion. – from Coquimbo. – from Payta. – on fossil tertiary shells of Chile. – on cretaceous fossils of Tierra del Fuego. – from the Cordillera of Chile.
Earth, marine origin of.
Earthenware, fossil.
Earthquake, effect of, at S. Maria. – elevation during, at Lemus. – of 1822, at Valparaiso. – effects of, in shattering surface. – fissures made by. – probable effects on cleavage.
Earthquakes in Pampas.
Earthquake-waves, power of, in throwing up shells. – effects of, near Lima. – power of, in transporting boulders.
Edmonston, Mr., on depths at which shells live at Valparaiso.
Ehrenberg, Professor, on infusoria in the Pampean formation. – on infusoria in the Patagonian formation.
Elevation of La Plata. – Brazil. – Bahia Blanca. – San Blas. – Patagonia. – Tierra del Fuego. – Falkland islands. – Pampas. – Chonos archipelago. – Chiloe. – Chile. – Valparaiso. – Coquimbo. – Guasco. – Iquique. – Cobija. – Lima. – sudden, at S. Maria. – at Lemus. – insensible, at Chiloe. – at Valparaiso. – at Coquimbo. – axes of, at Chiloe. – at P. Rumena. – at Concepcion. – unfavourable for the accumulation of permanent deposits. – lines of, parallel to cleavage and foliation. – lines of, oblique to foliation. – areas of, causing lines of elevation and cleavage. – lines of, in the Cordillera. – slow, in the Portillo range. – two periods of, in Cordillera of Central Chile. – of the Uspallata range. – two periods of, in Cumbre Pass. – horizontal, in the Cordillera of Copiapo. – axes of, coincident with volcanic orifices. – of the Cordillera, summary on.
Elliott, Captain, on human remains.
Ensenada, elevated shells of.
Entre Rios, geology of.
Equus curvidens.
Epidote in Tierra del Fuego. – in gneiss. – frequent in Chile. – in the Uspallata range. – in porphyry of Coquimbo.
Erman, M., on andesite.
Escarpments, recent, of Patagonia.
Extinction of fossil mammifers.
Falkland islands, elevation of. – pebbles on coast. – geology of.
Falkner, on saline incrustations.
Faults, great, in Cordillera.
Feldspar, earthy, metamorphosis of, at Port Desire. – albitic. – crystals of, with albite. – orthitic, in conglomerate of Tenuyan. – in granite of Portillo range. – in porphyries in the Cumbre Pass.
Feuillee on sea-level at Coquimbo.
Fissures, relations of, to concretions. – upfilled, at Port Desire. – in clay-slate.
Fitton, Dr., on the geology of Tierra del Fuego.
Fitzroy, Captain, on the elevation of the Falkland islands. – on the elevation of Concepcion.
Foliation, definition of.
– of rocks at Bahia.
– Rio de Janeiro.
– Maldonado.
– Monte Video.
– S. Guitru-gueyu.
– Falkland I.
– Tierra del Fuego.
– Chonos archipelago.
– Chiloe.
– Concepcion.
– Chile.
– discussion on.
Forbes, Professor E., on cretaceous fossils of Concepcion. – on cretaceous fossils and subsidence in Cumbre Pass. – on fossils from Guasco. – from Coquimbo. – from Copiapo. – on depths at which shells live.