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Updated: June 29, 2025
This peculiar physiognomy* of the vegetation of the Guainia, the Tuamini, and the Cassiquiare, is owing to the preponderance of the families of the guttiferae, the sapotae, and the laurineae, in the equatorial regions. We found by the bearings of the sinuosities of the river, that this rock is nearly in the latitude of the mission of San Francisco Solano.
We passed the night of the 20th of May, the last of our passage on the Cassiquiare, near the point of the bifurcation of the Orinoco.
Young palm-trees only being employed, they must be planted and carefully cultivated. A little above the mission of Davipe, the Rio Negro receives a branch of the Cassiquiare, the existence of which is a very remarkable phenomenon in the history of the branchings of rivers.
We left the island of Dapa long before daybreak; and notwithstanding the rapidity of the current, and the activity of our rowers, our passage to the fort of San Carlos del Rio Negro occupied twelve hours. We passed, on the left, the mouth of the Cassiquiare, and, on the right, the small island of Cumarai.
Unhappily the natives devote themselves to this employment more than to agriculture. Yet the soil on the banks of the Cassiquiare is excellent. We find there a granitic sand, of a blackish-brown colour, which is covered in the forests with thick layers of rich earth, and on the banks of the river with clay almost impermeable to water.
Contiguous mountains are only found more to the east, towards the sources of the Pacimoni, Siapa, and Mavaca. Having arrived on the south of the Raudal of Caravine, we perceived that the Cassiquiare, by the windings of its course, again approached San Carlos.
It is only where there are mountains that these majestic plants descend towards the plains; they seem to avoid perfectly flat grounds, as those through which run the Cassiquiare, the Temi, Inirida, and the Rio Negro. We passed in the night near a rock, called the Piedra de Astor by the missionaries. The ground from the mouth of the Guaviare constantly displays the same geological formation.
We were told that the Indians of the Cassiquiare and the Rio Negro are preferred on the Lower Orinoco, and especially at Angostura, to the inhabitants of the other missions, on account of their intelligence and activity. Those of Mandavaca are celebrated among the tribes of their own race for the preparation of the curare poison, which does not yield in strength to the curare of Esmeralda.
Satisfied with our observations, we left the rock of Culimacari at half past one on the morning of the 12th. The torment of mosquitos, to which we were exposed, augmented in proportion as we withdrew from the Rio Negro. There are no zancudos in the valley of Cassiquiare, but the simulia, and all the other insects of the tipulary family, are the more numerous and venomous.
Francis contained seven thousand three hundred inhabitants, and that of the Capuchinos Catalanes seventeen thousand; an astonishing disproportion, when we reflect on the smallness of the latter territory compared to the vast banks of the Upper Orinoco, the Atabapo, the Cassiquiare and the Rio Negro.
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