Of all these six rivers, the Purus is the most important.
"The Andes and the Amazon" by James Orton
Purus river district, Brazil.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5" by Various
On Jan. 4, at about the point of the junction of the Purus River with the Amazon, Lieut.
"Oregon and Eldorado" by Thomas Bulfinch