Personal Narrative Of Travels To The Equinoctial Regions Of America During The Years 1799-1804 - Volume 2 - By Alexander Von Humboldt And Aime Bonpland.
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If You Address Yourself To The Missionaries, They
Reply, As If They Had The Most Convincing Proofs Of The Fact, That The
Waters Are Coloured By Washing The Roots Of The Sarsaparilla.
The
Smilaceae no doubt abound on the banks of the Rio Negro, the Pacimony,
and the Cababury; their roots, macerated in the water, yield an
extractive matter, that is brown, bitter, and mucilaginous; but how
many tufts of smilax have we seen in places, where the waters were
entirely white.
In the marshy forest which we traversed, to convey our
canoe from the Rio Tuamini to the Cano Pimichin and the Rio Negro,
why, in the same soil, did we ford alternately rivulets of black and
white water? Why did we find no river white near its springs, and
black in the lower part of its course? I know not whether the Rio
Negro preserves its yellowish brown colour as far as its mouth,
notwithstanding the great quantity of white water it receives from the
Cassiquiare and the Rio Blanco.
Although, on account of the abundance of rain, vegetation is more
vigorous close to the equator than eight or ten degrees north or
south, it cannot be affirmed, that the rivers with black waters rise
principally in the most shady and thickest forests. On the contrary, a
great number of the aguas negras come from the open savannahs that
extend from the Meta beyond the Guaviare towards the Caqueta. In a
journey which I made with Senor Montufar from the port of Guayaquil to
the Bodegas de Babaojo, at the period of the great inundations, I was
struck by the analogy of colour displayed by the vast savannahs of the
Invernadero del Garzal and of the Lagartero, as well as by the Rio
Negro and the Atabapo.
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