We Shall Have Occasion To Speak Of The Rio Branco And The Padaviri, When We Arrive In That Mission; It

Suffices here to pause at the third tributary stream of the Rio Negro, the Cababury, the interbranchings of which with

The Cassiquiare are alike important in their connexion with hydrography, and with the trade in sarsaparilla.

The lofty mountains of the Parime, which border the northern bank of the Orinoco in the upper part of its course above Esmeralda, send off a chain towards the south, of which the Cerro de Unturan forms one of the principal summits. This mountainous country, of small extent but rich in vegetable productions, above all, in the mavacure liana, employed in preparing the wourali poison, in almond-trees (the juvia, or Bertholletia excelsa), in aromatic pucheries, and in wild cacao-trees, forms a point of division between the waters that flow to the Orinoco, the Cassiquiare, and the Rio Negro. The tributary streams on the north, or those of the Orinoco, are the Mavaca and the Daracapo; those on the west, or of the Cassiquiare, are the Idapa and the Pacimoni; and those on the south, or of the Rio Negro, are the Padaviri and the Cababuri. The latter is divided near its source into two branches, the westernmost of which is known by the name of Baria. The Indians of the mission of San Francisco Solano gave us the most minute description of its course. It affords the very rare example of a branch by which an inferior tributary stream, instead of receiving the waters of the superior stream, sends to it a part of its own waters in a direction opposite to that of the principal recipient.

The Cababuri runs into the Rio Negro near the mission of Nossa Senhora das Caldas; but the rivers Ya and Dimity, which are higher tributary streams, communicate also with the Cababuri; so that, from the little fort of San Gabriel de Cachoeiras as far as San Antonio de Castanheira the Indians of the Portuguese possessions can enter the territory of the Spanish missions by the Baria and the Pacimoni.

The chief object of these incursions is the collection of sarsaparilla and the aromatic seeds of the puchery-laurel (Laurus pichurim). The sarsaparilla of these countries is celebrated at Grand Para, Angostura, Cumana, Nueva Barcelona, and in other parts of Terra Firma, by the name of zarza del Rio Negro. It is much preferred to the zarza of the Province of Caracas, or of the mountains of Merida; it is dried with great care, and exposed purposely to smoke, in order that it may become blacker. This liana grows in profusion on the humid declivities of the mountains of Unturan and Achivaquery. Decandolle is right in suspecting that different species of smilax are gathered under the name of sarsaparilla. We found twelve new species, among which the Smilax siphylitica of the Cassiquaire, and the Smilax officinalis of the river Magdalena, are most esteemed on account of their diuretic properties. The quantity of sarsaparilla employed in the Spanish colonies as a domestic medicine is very considerable. We see by the works of Clusius, that at the beginning of the Conquista, Europe obtained this salutary medicament from the Mexican coast of Honduras and the port of Guayaquil. The trade in zarza is now more active in those ports which have interior communications with the Orinoco, the Rio Negro, and the Amazon.

The trials made in several botanical gardens of Europe prove that the Smilax glauca of Virginia, which it is pretended is the S. sarsaparilla of Linnaeus, may be cultivated in the open air, wherever the mean winter temperature rises above six or seven degrees of the centigrade thermometer*: but those species that possess the most active virtues belong exclusively to the torrid zone, and require a much higher degree of heat. (* The winter temperature at London and Paris is 4.2 and 3.7; at Montpelier, 6.7; at Rome, 7.7 degrees. In that part of Mexico, and the Terra Firma, where we saw the most active species of the sarsaparilla growing (that which supplies the trade of the Spanish and Portuguese colonies), the temperature is from twenty to twenty-six degrees. The roots of another family of monocotyledons (of some cyperaceae) possess also diaphoretic and resolvent properties. The Carex arenaria, the C. hirta, etc. furnish the German sarsaparilla of druggists. According to Clusius, Europe received the first sarsaparilla from Yucatan, and the island of Puna, opposite Guayaquil.) In reading the works of Clusius, it can scarcely be conceived why our writers on the Materia Medica persist in considering a plant of the United States as the most ancient type of the officinal species of the genus smilax.

We found in the possession of the Indians of the Rio Negro some of those green stones, known by the name of Amazon stones, because the natives pretend, according to an ancient tradition, that they come from the country of the women without husbands (Cougnantainsecouima), or women living alone (Aikeambenano*). (* This word is of the Tamanac language; these women are the sole Donne of the Italian missionaries.) We were told at San Carlos, and in the neighbouring villages, that the sources of the Orinoco, which we found east of the Esmeralda, and in the missions of the Carony and at Angostura, that the sources of the Rio Branco are the native spots of the green stones. These statements confirm the report of an old soldier of the garrison of Cayenne (mentioned by La Condamine), who affirmed that those mineral substances were obtained from the country of women, west of the rapids of the Oyapoc. The Indians who inhabit the fort of Topayos on the Amazon five degrees east of the mouth of the Rio Negro, possessed formerly a great number of these stones. Had they received them from the north, that is, from the country pointed out by the Indians of the Rio Negro, which extends from the mountains of Cayenne towards the sources of the Essequibo, the Carony, the Orinoco, the Parime, and the Rio Trombetas?

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