William Lewis Herndon, Lieutenant, U.S.N., Exploration of the Valley of the Amazon… (1853)
“ I should judge from the periodical overflow of the lands, the heat of the sun, and the lightness and richness of the soil, that this would be the finest rice country in the world. We started at twelve with two canoes and twelve men; river fifty yards broad, eighteen feet deep, and with three miles an hour current; a stream called the Tocache empties into it about half a mile below the port. It forces its way through five channels, over a bank of stones and sand. It is doubtless a fine, large-looking river when at high water. The country is hilly on the right and flat on the left-hand side. ”
