These Passages, From One Basin Of A River To Another, By The Natural Canal Of The Cassiquiare, Excite No More Attention In The Colonists At Present Than The Arrival Of Boats That Descend The Loire By The Canal Of Orleans, Awakens On The Banks Of The Seine.

Although, since the journey of Father Roman, in 1744, precise notions have been acquired in the Spanish possessions in

America, both of the direction of the Upper Orinoco from east to west, and of the manner of its communication with the Rio Negro, this knowledge did not reach Europe till a much later period. In 1750, La Condamine and D'Anville* were still of opinion that the Orinoco was a branch of the Caqueta coming from the south-east, and that the Rio Negro issued immediately from it. (* See the classical memoir of this great geographer in the Journal des Savans, March 1750 page 184. "One fact," says D'Anville, "which cannot be considered as equivocal, after the proofs with which we have been recently furnished, is the communication of the Rio Negro with the Orinoco; but we must not hesitate to admit, that we are not yet sufficiently informed of the manner in which this communication takes place." I was surprised to see in a very rare map, which I found at Rome (Provincia Quitensis Soc. Jesu in America, auctore Carolo Brentano et Nicolao de la Torre; Romae 1745) that seven years after the discovery of Father Roman, the Jesuits of Quito were ignorant of the existence of the Cassiquiare. The Rio Negro is figured in this map as a branch of the Orinoco.) It was only in the second edition of his South America, that D'Anville (without renouncing that intercommunication of the Caqueta, by means of the Iniricha (Inirida), with the Orinoco and the Rio Negro) describes the Orinoco as taking its rise at the east, near the sources of the Rio Branco, and marks the Rio Cassiquiare as bearing the waters of the Upper Orinoco to the Rio Negro. It is probable that this indefatigable and learned writer had obtained information on the manner of the bifurcation from his frequent communications with the missionaries,* who were then the only geographers of the most inland parts of the continents. (* According to the Annals of Berredo, it would appear, that as early as the year 1739, the military incursions from the Rio Negro to the Cassiquiare had confirmed the Portuguese Jesuits in the opinion that there was a communication between the Amazon and the Orinoco. Southey's Brazils volume 1 page 658.)

Had the nations of the lower region of equinoctial America participated in the civilization spread over the cold and alpine region, that immense Mesopotamia between the Orinoco and the Amazon would have favoured the development of their industry, animated their commerce, and accelerated the progress of social order. We see everywhere in the old world the influence of locality on the dawning civilization of nations. The island of Meroe between the Astaboras and the Nile, the Punjab of the Indus, the Douab of the Ganges, and the Mesopotamia of the Euphrates, furnish examples that are justly celebrated in the annals of the human race.

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