Twenty miles to the north, the St. Francisco receives, on the same side, the large Urucuya, navigable for a considerable distance. It originates on the boundary of Goyaz, is narrow and deep, having clear waters, which flow with such rapidity, that, on entering the St. Francisco, they at all times roll across, sensibly affecting the lands of its eastern margin. The St. Rita, joining on the right, and the Claro on the left, are its principal tributaries, both traversing sterile lands possessing cattle. It is followed by the Acary, Pardo, Pandeiro, Salgado, Pindahyba, Itacaramby, and the Japore, the whole entering by the western margin. The Pandeiro has fine water, an extensive course, and traverses large woods of excellent timber with many cedars, where numerous colonies might be advantageously established, for the cultivation of their fertile soils. A few leagues below the Japore, the important river Verde enters on the eastern side; and about the same distance further, the Carinhenha, which is large and navigable for a considerable extent. It rises in the chapadas of Santa Maria, near the limits of Goyaz; its crystalline waters, having a rapid current, flow for a considerable way without mixing with those of the St. Francisco after entering it. We will finish the description of the noble St. Francisco when we treat upon the province of Pernambuco, which is bounded by this river from hence to the ocean. This very extensive river, as well as those mentioned which enlarge it, abound with fish, of which the _doirado_, _sorrubin_, _mandin_, and _piranha_, are the best. Near the right margin of the St. Francisco, and eighteen miles below the confluence of the Bambuhy, is the lake Feia, of a circular form, about three hundred yards in diameter, of dark green water, and inhabited by the _sucury_ and _sucuriu_ snakes, and the alligator. No reptile or even bird approaches to drink its waters. About two miles to the north, there is another called Lake Verde, narrow, six miles long, and the haunt of the same horrible creatures. Both lakes are discharged into the St. Francisco. The _sucuriu_ and _sucury_ differ only in colour; the first is of a blackish hue, and the other grey: they have two large claws, or talons, near the extremity of the tail, with which they secure themselves to roots or the points of stones under the water, when they wish to seize any animal. The teeth are sharp pointed, and inclined towards the gorge, so that the prisoner cannot escape, although the monster wished to withdraw its hold. _Sucurys_ have been killed twenty yards long. These snakes are supposed to be a species of the _sucuriuba_ of other provinces.