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.