At ten a.m.we arrived at the first rapids, which are called Tapaiunaquara.The river, which was here about a mile wide, was choked up with rocks, a broken ridge passing completely across it.Between these confused piles of stone the currents were fearfully strong, and formed numerous eddies and whirlpools.We were obliged to get out occasionally and walk from rock to rock, whilst the men dragged the canoe over the obstacles.Beyond Tapaiunaquara, the stream became again broad and deep, and the river scenery was beautiful in the extreme.The water was clear and of a bluish-green colour.On both sides of the stream stretched ranges of wooded hills, and in the middle picturesque islets rested on the smooth water, whose brilliant green woods fringed with palms formed charming bits of foreground to the perspective of sombre hills fading into grey in the distance.
Joaquim pointed out to us grove after grove of Brazil nut trees (Bertholletia excelsa) on the mainland.This is one of the chief collecting grounds for this nut.The tree is one of the loftiest in the forest, towering far above its fellows; we could see the woody fruits, large and round as cannon-balls, dotted over the branches.The currents were very strong in some places, so that during the greater part of the way the men preferred to travel near the shore, and propel the boat by means of long poles.
We arrived at Arroyos about four o'clock in the afternoon, after ten hours' hard pull.The place consists simply of a few houses built on a high bank, and forms a station where canoemen from the mining countries of the interior of Brazil stop to rest themselves before or after surmounting the dreaded falls and rapids of Guaribas, situated a couple of miles further up.We dined ashore, and in the evening again embarked to visit the falls.The vigorous and successful way in which our men battled with the terrific currents excited our astonishment.The bed of the river, here about a mile wide, is strewn with blocks of various sizes, which lie in the most irregular manner, and between them rush currents of more or less rapidity.With an accurate knowledge of the place and skillful management, the falls can be approached in small canoes by threading the less dangerous channels.The main fall is about a quarter of a mile wide; we climbed to an elevation overlooking it, and had a good view of the cataract.A body of water rushes with terrific force down a steep slope, and boils up with deafening roar around the boulders which obstruct its course.The wildness of the whole scene was very impressive.As far as the eye could see, stretched range after range of wooded hills and scores of miles of beautiful wilderness, inhabited only by scanty tribes of wild Indians.In the midst of such a solitude, the roar of the cataract seemed fitting music.
September 17th.--We commenced early in the morning our downward voyage.Arroyos is situated in about 4 10' S.lat.; and lies, therefore, about 130 miles from the mouth of the Tocantins.
Fifteen miles above Guaribas, another similar cataract called Tabocas lies across the river.We were told that there were in all fifteen of these obstructions to navigate, between Arroyos and the mouth of the Araguaya.The worst was the Inferno, the Guaribas standing second to it in evil reputation.Many canoes and lives have been lost here, most of the accidents arising through the vessels being hurled against an enormous cubical mass of rock called the Guaribinha, which we, on our trip to the falls in the small canoe, passed round with the greatest ease about a quarter of a mile below the main falls.This, however, was the dry season; in the time of full waters, a tremendous current sets against it.We descended the river rapidly, and found it excellent fun shooting the rapids.The men seemed to delight in choosing the swiftest parts of the current; they sang and yelled in the greatest excitement, working the paddles with great force, and throwing clouds of spray above us as we bounded downwards.We stopped to rest at the mouth of a rivulet named Caganxa.The pilot told us that gold had been found in the bed of this brook;so we had the curiosity to wade several hundred yards through the icy cold waters in search of it.Mr.Leavens seemed very much interested in the matter.He picked up all the shining stones he could espy in the pebbly bottom, in hopes of finding diamonds also.There is, in fact, no reason why both gold and diamonds should not be found here, the hills being a continuation of those of the mining countries of interior Brazil, and the brooks flowing through the narrow valleys between them.
