—— of the Cordillera of Central Chile442,448,461—— little disturbed in Cumbre Pass460,466—— disturbance of, near Copiapo501Streams of lava at S. Cruz, inclination of390—— in the Portillo range457String of cotton with fossil-shells325Struthiolaria ornata392Studer, M., on metamorphic rocks438Subsidence during formation of sea-cliffs301—— near Lima327—— probable, during Pampean formation376—— necessary for the accumulation of permanent deposits411—— during the tertiary formations of Chile and Patagonia413—— probable during the Neocomian formation of the Portillo Pass453—— probable during the formation of conglomerate of Tenuyan459—— during the Neocomian formation of the Cumbre Pass465—— of the Uspallata range474,477—— great, at Copiapo496—— —— during the formation of the Cordillera510Sulphur, volcanic exhalations of509Sumatra, promontories of305Summary on the recent elevatory movements259,329,514—— on the Pampean formation371,515—— on the tertiary formations of Patagonia and Chile391,404,513—— on the Chilean Cordillera508—— on the cretaceo-oolitic formation508—— on the subsidences of the Cordillera509—— on the elevation of the Cordillera511,517Tacna, elevation of323Tampico, elevated shells near329Tandil, crystalline rocks of420Tapalguen, Pampean formation of353—— crystalline rocks of420Taylor, Mr., on copper veins of Cuba506Temperature of Chile during the tertiary period408Tension, lines of, origin of, axes of elevation and of cleavage440Tenuy Point, singular section of395Tenuyan, valley of454,478Terraces of the valley of S. Cruz286—— of equable heights throughout Patagonia290—— of Patagonia, formation of294—— of Chiloe304—— at Conchalee311—— of Coquimbo316—— not horizontal at Coquimbo317—— of Guasco320—— of S. Lorenzo323—— of gravel within the Cordillera337Theories on the origin of the Pampean formation372Tierra Amarilla489Tierra del Fuego, form of sea-bottom300—— tertiary formations of391—— clay-slate formation of424—— cretaceous formation of426—— crystalline rocks of426—— cleavage of clay-slate427,436Tosca rock352Trachyte of Chiloe394—— of Port Desire421—— in the Cordillera347Traditions of promontories having been islands305—— on changes of level near Lima327Trees buried in plain of Iquique346—— silicified, vertical, of the Uspallata range473Tres Montes, elevation of303—— volcanic rocks of393Trigonocelia insolita392Tristan Arroyo, elevated shells of278Tschudi, Mr., on subsidence near Lima327Tuff, calcareous, at Coquimbo313—— on basin-plain near St. Jago334—— structure of, in Pampas352—— origin of, in Pampas374—— pumiceous, of R. Negro382—— Nuevo Gulf383—— Port Desire383—— S. Cruz386—— Patagonia, summary on Chiloe391—— formation of, in Portillo chain395—— great deposit of, at Copiapo457Tuffs, volcanic, metamorphic, of Uspallata471—— of Coquimbo484Ulloa, on rain in Peru324—— on elevation near Lima327Uruguay, Rio, elevation of country near278Uspallata, plain of335,515—— pass of459—— range of368—— concluding remarks on476Valdivia, tertiary beds of398—— mica-slate of433Valley of S. Cruz, structure of285—— Coquimbo314—— Guasco, structure of320—— Copiapo, structure of321—— S. Cruz, tertiary formations of386—— Coquimbo, geology of482—— Guasco, secondary formations of487—— Copiapo, secondary formations of488—— Despoblado496,497,499Valleys in the Cordillera bordered by gravel fringes337—— formation of338—— in the Cordillera449Valparaiso, elevation of307—— gneiss of435Vein of quartz near Monte Video419—— in mica-slate430—— relations of, to cleavage437—— in a trap dike426—— of granite, quartzose432,475—— remarkable, in gneiss, near Valparaiso435Veins, relations of, to concretions396—— metalliferous, of the Uspallata range475—— metalliferous, discussion on505Venezuela, gneissic rocks of415Ventana, Sierra, Pampean formation near353—— quartz-rock of421Villa Vincencio Pass468Volcan, Rio, mouth of449—— fossils of453Volcanoes of the Cordillera392,447,511—— absent, except near bodies of water457—— ancient submarine, in Cordillera502—— action of, in relation to changes of level514—— long action of, in the Cordillera517Wafer on elevated shells322Waves caused by earthquakes, power of, in transporting boulders326,344—— power of, in throwing up shells309Weaver, Mr., on elevated shells329White, Martin, on sea-bottom299Wood, silicified, of Entre Rios364—— S. Cruz388—— Chiloe394,396—— Uspallata range473—— Los Hornos479—— Copiapo495,497Yeso, Rio, and plain of450Ypun Island, tertiary formation of393Zeagonite426
—— of the Cordillera of Central Chile442,448,461—— little disturbed in Cumbre Pass460,466—— disturbance of, near Copiapo501Streams of lava at S. Cruz, inclination of390—— in the Portillo range457String of cotton with fossil-shells325Struthiolaria ornata392Studer, M., on metamorphic rocks438Subsidence during formation of sea-cliffs301—— near Lima327—— probable, during Pampean formation376—— necessary for the accumulation of permanent deposits411—— during the tertiary formations of Chile and Patagonia413—— probable during the Neocomian formation of the Portillo Pass453—— probable during the formation of conglomerate of Tenuyan459—— during the Neocomian formation of the Cumbre Pass465—— of the Uspallata range474,477—— great, at Copiapo496—— —— during the formation of the Cordillera510Sulphur, volcanic exhalations of509Sumatra, promontories of305Summary on the recent elevatory movements259,329,514—— on the Pampean formation371,515—— on the tertiary formations of Patagonia and Chile391,404,513—— on the Chilean Cordillera508—— on the cretaceo-oolitic formation508—— on the subsidences of the Cordillera509—— on the elevation of the Cordillera511,517Tacna, elevation of323Tampico, elevated shells near329Tandil, crystalline rocks of420Tapalguen, Pampean formation of353—— crystalline rocks of420Taylor, Mr., on copper veins of Cuba506Temperature of Chile during the tertiary period408Tension, lines of, origin of, axes of elevation and of cleavage440Tenuy Point, singular section of395Tenuyan, valley of454,478Terraces of the valley of S. Cruz286—— of equable heights throughout Patagonia290—— of Patagonia, formation of294—— of Chiloe304—— at Conchalee311—— of Coquimbo316—— not horizontal at Coquimbo317—— of Guasco320—— of S. Lorenzo323—— of gravel within the Cordillera337Theories on the origin of the Pampean formation372Tierra Amarilla489Tierra del Fuego, form of sea-bottom300—— tertiary formations of391—— clay-slate formation of424—— cretaceous formation of426—— crystalline rocks of426—— cleavage of clay-slate427,436Tosca rock352Trachyte of Chiloe394—— of Port Desire421—— in the Cordillera347Traditions of promontories having been islands305—— on changes of level near Lima327Trees buried in plain of Iquique346—— silicified, vertical, of the Uspallata range473Tres Montes, elevation of303—— volcanic rocks of393Trigonocelia insolita392Tristan Arroyo, elevated shells of278Tschudi, Mr., on subsidence near Lima327Tuff, calcareous, at Coquimbo313—— on basin-plain near St. Jago334—— structure of, in Pampas352—— origin of, in Pampas374—— pumiceous, of R. Negro382—— Nuevo Gulf383—— Port Desire383—— S. Cruz386—— Patagonia, summary on Chiloe391—— formation of, in Portillo chain395—— great deposit of, at Copiapo457Tuffs, volcanic, metamorphic, of Uspallata471—— of Coquimbo484Ulloa, on rain in Peru324—— on elevation near Lima327Uruguay, Rio, elevation of country near278Uspallata, plain of335,515—— pass of459—— range of368—— concluding remarks on476Valdivia, tertiary beds of398—— mica-slate of433Valley of S. Cruz, structure of285—— Coquimbo314—— Guasco, structure of320—— Copiapo, structure of321—— S. Cruz, tertiary formations of386—— Coquimbo, geology of482—— Guasco, secondary formations of487—— Copiapo, secondary formations of488—— Despoblado496,497,499Valleys in the Cordillera bordered by gravel fringes337—— formation of338—— in the Cordillera449Valparaiso, elevation of307—— gneiss of435Vein of quartz near Monte Video419—— in mica-slate430—— relations of, to cleavage437—— in a trap dike426—— of granite, quartzose432,475—— remarkable, in gneiss, near Valparaiso435Veins, relations of, to concretions396—— metalliferous, of the Uspallata range475—— metalliferous, discussion on505Venezuela, gneissic rocks of415Ventana, Sierra, Pampean formation near353—— quartz-rock of421Villa Vincencio Pass468Volcan, Rio, mouth of449—— fossils of453Volcanoes of the Cordillera392,447,511—— absent, except near bodies of water457—— ancient submarine, in Cordillera502—— action of, in relation to changes of level514—— long action of, in the Cordillera517Wafer on elevated shells322Waves caused by earthquakes, power of, in transporting boulders326,344—— power of, in throwing up shells309Weaver, Mr., on elevated shells329White, Martin, on sea-bottom299Wood, silicified, of Entre Rios364—— S. Cruz388—— Chiloe394,396—— Uspallata range473—— Los Hornos479—— Copiapo495,497Yeso, Rio, and plain of450Ypun Island, tertiary formation of393Zeagonite426