Cleavage, definition of. --at Bahia. --Rio de Janeiro. --Maldonado. --Monte Video. --S. Guitru-gueyu. --Falkland I. --Tierra del Fuego. --Chonos I. --Chiloe. --Concepcion. --Chile. --discussion on.
Cleavage-laminae superficially bent.
Cliffs, formation of.
Climate, late changes in. --of Chile during tertiary period.
Coal of Concepcion. --S. Lorenzo.
Coast-denudation of St. Helena.
Cobija, elevation of.
Colombia, cretaceous formation of.
Colonia del Sacramiento, elevation of. --Pampean formation near Colorado, Rio, gravel of. --sand-dunes of. --Pampean formation near.
Combarbala.
Concepcion, elevation of. --deposits of. --crystalline rocks of.
Conchalee, gravel-terraces of.
Concretions of gypsum, at Iquique. --in sandstone at S. Cruz. --in tufaceous tuff of Chiloe. --in gneiss. --in claystone-porphyry at Port Desire. --in gneiss at Valparaiso. --in metamorphic rocks. --of anhydrite. --relations of, to veins.
Conglomerate claystone of Chile. --of Tenuyan. --of the Cumbre Pass. --of Rio Claro. --of Copiapo.
Cook, Captain, on form of sea-bottom.
Copiapo, elevation of. --tertiary formations of. --secondary formations of.
Copper, sulphate of. --native, at Arqueros. --mines of, at Panuncillo. --veins, distribution of.
Coquimbo, elevation and terraces of. --tertiary formations of. --secondary formations of.
Corallines living on pebbles.
Cordillera, valleys bordered by gravel fringes. --basal strata of. --fossils of. --elevation of. --gypseous formations of. --claystone-porphyries of. --andesitic rocks of. --volcanoes of.
Coste, M., on elevation of Lemus.
Coy inlet, tertiary formation of.
Crassatella Lyellii.
Cruickshanks, Mr., on elevation near Lima.
Crystals of feldspar, gradual formation of, at Port Desire.
Cumbre, Pass of, in Cordillera.
Cuming, Mr., on habits of the Mesodesma. --on range of living shells on west coast.
Dana, Mr., on foliated rocks. --on amygdaloids.
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.