Edward Davis Mathews, Up the Amazon and Madeira rivers… (1879)
“ The river Yacuma is said to be navigable all the year round for large canoes, and is free from savages; therefore a small steamer may be advantageously employed here, after the construction of the railway of the cachuelas. The Beni River is said to be known from its sources, near La Paz, down to Cavinas, where there is a small village and a mission; but below that point few persons, if any, have of late years navigated, for the savages, who infest the lands near the junction of the Beni and the Mamoré, at the Madeira Falls, are much dreaded. ”
