Lardner Gibbon,
Exploration of the Valley of the Amazon…
“ The water at the mouth of a muddy stream is the clearest. When river water meets the heavy salt water of the ocean, the river current comes to a stand, and it is there, while standing still, that dirt settles from water the quickest; there 214 careful navigators look out for the bar across the mouth of the river as they come in from the sea. ”
