Port Desire, elevation and plains of. —tertiary formation of. —porphyries of.
Portillo Pass in the Cordillera.
Portillo chain. —compared with that of the Uspallata.
Prefil or sea-wall of Valparaiso.
Puente del Inca, section of.
Pumice, pebbles of. —conglomerate of R. Negro. —hills of, in the Cordillera.
Punta Alta, elevation of. —beds of.
Quartz-rock of the S. Ventana. —C. Blanco. —Falkland islands. —Portillo range. —viscidity of. —veins of, near Monte Video. — —in dike of greenstone. —grains of, in mica slate. — —in dikes. —veins of, relations to cleavage.
Quillota, Campana of.
Quintero, elevation of.