South America Called Them Author:Victor Wolfgang VonHagen This book concerns itself with four men: Charles-Marie de La Condamine, Alexander von Humboldt, Charles Darwin and Richard Spruce. These men represent four time-periods, four geographical regions, and four distinct sciences. — These men are not conquistadores nor pirates: their most offensive weapons are vasculums, sextants, and pincers, for thes... more »e heroes are all naturalists, the scientists who opened South America.« less