Lardner Gibbon,
Exploration of the Valley of the Amazon…
“ It is very thickly wooded below the first rapids; above these the trees disappear, and the river is bordered by immense plains, which would afford pasturage to large numbers of cattle. Barra is supplied with beef from the Rio Branco, where it must cost very little, as it is sold in Barra at five cents a pound. Strong northeasterly winds make the ascent of the river tedious. A boat will come down from San Joachim, near the sources of the river, to Barra, a distance of five hundred miles, and passing many rapids, in twelve days. ”
