Coast-road to Coquimbo-Great Loads carried by the Miners-Coquimbo-Earthquake-Step-formed Terrace-Absence of recent Deposits-Contemporaneousness of the Tertiary Formations-Excursion up the Valley-Road to Guasco-Deserts-Valley of Copiapo-Rain and Earthquakes-Hydrophobia-The Despoblado-Indian Ruins-Probable Change of Climate-River-bed arched by an Ear