A voyage to South-America [electronic resource] : describing at large the Spanish cities, towns, provinces, &c. on that extensive continent, the genius, customs, manners, and trade of the inhabitants; together with the natural history of the country, and an account of their gold and silver mines. Undertaken by command of His Majesty the King of Spain, By Don George Juan, and Don Antonio de Ulloa, both Captains of the Spanish Navy, Members of the Royal Societies of London and Berlin, and corresponding members of the Royal Academy at Paris. Translated from the original Spanish. Illustrated with copper-plates