William Lewis Herndon, Lieutenant, U.S.N., Exploration of the Valley of the Amazon… (1853)
“ The broken and precipitous mountain track — the deep morass-the thick and tangled forest — the danger from Indians, wild beasts, and reptiles — the scarcity of provisions — the exposure to the almost appalling rains — and the navigation of the impetuous and rock-obstructed river, threatening at every moment shipwreck to the frail canoe-form obstacles that might daunt any heart but that of the gold-hunter or the missionary.The most remarkable voyage down the Amazon was made by a woman. ”
