The opening of Preface
SOUTH America is, to my mind, "the Coming Continent"--the Continent of the future. Everybody knows the wealth of the Argentine, Peru, Chile, and Bolivia; but the interior of Brazil, the largest and richest country of all, not unlike forbidden Tibet, was perhaps better known a century or two ago than now. Few people realize that Brazil is larger than the United States of North America, Germany, Portugal, and a few other countries taken together. The interior is practically a terra incognita--although the ancient Jesuits and, at a later date, escaped slaves and native rubber collectors have perhaps found their way inland to a considerable distance.
When I started on the transcontinental journey I did not take Europeans with me. It is not easy to find men who can stand the strain of so long a journey. I was also not surprised, although I was disappointed, not to be able to obtain suitable officers in Brazil to go part of the journey with me, so that I might be relieved of a portion of the tedious scientific work of the expedition, especially taking and computing daily astronomical observations, to which much time has to be devoted.