Several Species Of Palms* Furnish The Inhabitants Of Equinoctial America And Africa With The Oil Which We Derive From The Olive.

(* In Africa, the elais or maba; in America the cocoa-tree.

In the cocoa-tree it is the perisperm; and in the elais (as in the olive, and the oleineae in general) it is the sarcocarp, or the pulp of the pericarp, that yields oil. This difference, observed in the same family, appears to me very remarkable, though it is in no way contradictory to the results obtained by De Candolle in his ingenious researches on the chemical properties of plants. If our Alfonsia oleifera belong to the genus Elais (as Brown, with great reason believes), it follows, that in the same genus the oil is found in the sarcocarp and in the perisperm.) What the coniferae are to the temperate zone, the terebinthaceae and the guttiferae are to the torrid. In the forests of those burning climates, (where there is neither pine, thuya, taxodium, nor even a podocarpus,) resins, balsams, and aromatic gums, are furnished by the maronobea, the icica, and the amyris. The collecting of these gummy and resinous substances is a trade in the village of Javita. The most celebrated resin bears the name of mani; and of this we saw masses of several hundred-weight, resembling colophony and mastic. The tree called mani by the Paraginis, which M. Bonpland believes to be the Moronobaea coccinea, furnishes but a small quantity of the substance employed in the trade with Angostura. The greatest part comes from the mararo or caragna, which is an amyris. It is remarkable enough, that the name mani, which Aublet heard among the Galibis* of Cayenne, was again heard by us at Javita, three hundred leagues distant from French Guiana. (* The Galibis or Caribis (the r has been changed into l, as often happens) are of the great stock of the Carib nations. The products useful in commerce and in domestic life have received the same denomination in every part of America which this warlike and commercial people have overrun.) The moronobaea or symphonia of Javita yields a yellow resin; the caragna, a resin strongly odoriferous, and white as snow; the latter becomes yellow where it is adherent to the internal part of old bark.

We went every day to see how our canoe advanced on the portages. Twenty-three Indians were employed in dragging it by land, placing branches of trees to serve as rollers. In this manner a small boat proceeds in a day or a day and a half, from the waters of the Tuamini to those of the Cano Pimichin, which flow into the Rio Negro. Our canoe being very large, and having to pass the cataracts a second time, it was necessary to avoid with particular care any friction on the bottom; consequently the passage occupied more than four days. It is only since 1795 that a road has been traced through the forest. By substituting a canal for this portage, as I proposed to the ministry of king Charles IV, the communication between the Rio Negro and Angostura, between the Spanish Orinoco and the Portuguese possessions on the Amazon, would be singularly facilitated.

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