Travels on the Amazon

by Alfred Russel Wallace

At Tómo I had observed signs of stratified upheaved rocks close to the village. Here the flat granite pavement presented a curious appearance: it contained, imbedded in it, fragments of rock, of an angular shape, of sandstone crystallized and stratified, and of quartz. Up to São Carlos I had constantly registered the boiling-point of water with an accurate thermometer, made for the purpose, in order to ascertain the height above the level of the sea. There I had unfortunately broken it, before arriving at this most interesting point, the watershed between the Amazon and the Orinooko. I am, however, inclined to think that the height given by Humboldt for São Carlos is too great. He himself says it is doubtful, as his barometer had got an air-bubble in it, and was emptied and refilled by him, and before returning to the coast was broken, so as to render a comparison of its indications impossible. Under these circumstances, I think little weight can be attached to the observations. He gives, however, eight hundred and twelve feet as the height of São Carlos above the sea. My observations made a difference of 0·5° of Fahrenheit in the temperature of boiling water between Barra and São Carlos, which would give a height of two hundred and fifty feet, to which may be added fifty feet for the height of the station at which the observations were made at Barra, making three hundred feet. Now the height of Barra above the sea I cannot consider to be more than a hundred feet, for both my own observations and those of Mr. Spruce with the aneroid would make Barra lower than Pará, if the difference of pressure of the atmosphere was solely owing to height, the barometer appearing to stand regularly higher at Barra than at Pará,—a circumstance which shows the total inapplicability of that instrument to determine small heights at very great distances. I cannot therefore think that São Carlos is more than four hundred, or at the outside five hundred feet, above the level of the sea. Should, as I suspect, the mean pressure of the atmosphere in the interior and on the coasts of South America differ from other causes than the elevation, it will be a difficult point ever accurately to ascertain the levels of the interior of this great continent, for the distances are too vast and the forests too impenetrable to allow a line of levels to be carried across it.

When my Indians returned with the roots of timbo, we all set to work beating it on the rocks with hard pieces of wood, till we had reduced it to fibres. It was then placed in a small canoe, filled with water and clay, and well mixed and squeezed, till all the juice had come out of it. This being done, it was carried a little way up the stream, and gradually tilted in, and mixed with the water. It soon began to produce its effects: small fish jumped up out of the water, turned and twisted about on the surface, or even lay on their backs and sides. The Indians were in the stream with baskets, hooking out all that came in the way, and diving and swimming after any larger ones that appeared at all affected. In this way, we got in an hour or two a basketful of fish, mostly small ones, but containing many curious species I had not before met with. Numbers escaped, as we had no weir across the stream; and the next day several were found entangled at the sides, and already putrefying. I now had plenty to do. I selected about half a dozen of the most novel and interesting species to describe and figure, and gave the rest to be cleaned and put in the pot, to provide us a rather better supper than we had had for some days past.

The next morning early our porters appeared, consisting of one man and eight or ten women and girls. We accordingly made up loads for each of them. There was a basket of salt about a hundred pounds weight, four baskets of farinha, besides boxes, baskets, a jar of oil, a demijohn of molasses, a portable cupboard, and numerous other articles. The greater part of these were taken, in loads proportioned to the strength of the bearers, and two of my Indians accompanied them, and were to return in the evening, and then go with me the next day. Night came, however, and they did not appear; but near midnight they came in, telling me that they could not keep up with the Javíta Indians, and night coming on while they were in the middle of the road, they had hid their burdens in the forest and returned. So the next morning they had to go off again to finish their journey, and I was obliged to wait till they came back, and was delayed another day before I could get all my things taken.

I occupied myself in the forest catching a few insects, which, however, were not very numerous. The following morning we had nothing for breakfast, so I sent the Indians off early to fish, with positive instructions to return by ten o'clock, in order that we might get to Javíta before night. They chose, however, to stay till past noon, and then came with two or three small fish, which did not give us a mouthful apiece. It was thus two o'clock before we started. I was pretty well loaded with gun, ammunition, insect-boxes, etc., but soon got on ahead, with one Indian boy, who could not understand a single word of Portuguese. About halfway I saw a fine mutun, a little way off the road, and went after it; but I had only small shot in my gun, and wounded it, but did not bring it down. I still followed, and fired several times but without effect, and as it had suddenly got dark I was obliged to leave it. We had still some miles to go. The sun had set, so we pushed on quickly, my attendant keeping close at my heels. In the marshes and over the little streams we had now some difficulty in finding our way along the narrow trunks laid for bridges. I was barefoot, and every minute stepped on some projecting root or stone, or trod sideways upon something which almost dislocated my ankle. It was now pitch-dark: dull clouds could just be distinguished through the openings in the high arch of overhanging trees, but the road we were walking on was totally invisible. Jaguars I knew abounded here, deadly serpents were plentiful, and at every step I almost expected to feel a cold, gliding body under my feet, or deadly fangs in my leg. Through the darkness I gazed, expecting momentarily to encounter the glaring eyes of a jaguar, or to hear his low growl in the thicket. But to turn back or to stop were alike useless: I knew that we could not be very far from the village, and so pressed on, with a vague confidence that after all nothing disagreeable would happen, and that the next day I should only laugh at my fears overnight. Still the sharp fangs of the dried snake's head at Pimichin would come across my memory, and many a tale of the fierceness and cunning of the jaguar were not to be forgotten. At length we came to the clearing I had reached two days before, and I now knew that we had but a short distance to go. There were, however, several small streams to cross. Suddenly we would step into water, which we felt but could not see, and then had to find the narrow bridge crossing it. Of the length of the bridge, its height above the water, or the depth of the stream, we were entirely ignorant; and to walk along a trunk four inches wide under such circumstances, was rather a nervous matter. We proceeded, placing one foot before the other, and balancing steadily, till we again felt ourselves on firm ground. On one or two occasions I lost my balance, but it was luckily only a foot or two to the ground and water below, though if it had been twenty it would have been all the same. Some half dozen of brooks and bridges like this had to be passed, and several little up and downs in the road, till at length, emerging from the pitchy shade upon an open space, we saw twinkling lights, which told us the village was before us.

In about a quarter of an hour more we reached it, and, knocking at a door, asked where the Commissario lived. We were directed to a house on the other side of the square, where an old man conducted us to the "Casa de nação" (a shed with a door), in which were all my goods. On asking him if he could furnish me something for supper, he gave us some smoked turtles' eggs and a piece of salt fish, and then left us. We soon made a fire with some sticks we found, roasted our fish, and made a supper with the eggs and some farinha; I then hung up my hammock, and my companion lay on the ground by the side of the fire; and I slept well, undisturbed by dreams of snakes or jaguars.

The next morning I called on the Commissario, for the old man I had seen the evening before was only a capitão. I found him in his house: he was an Indian who could read and write, but not differing in any other respect from the Indians of the place. He had on a shirt and a pair of short-legged trousers, but neither shoes nor stockings. I informed him why I had come there, showed him my Brazilian passport, and requested the use of the Convento (a house formerly occupied by the priests, but now kept for travellers) to live in. After a little demur, he gave me the key of the house, and so I said good-morning, and proceeded to take possession.

About the middle of the day, the Indians who had started with me the day before arrived; they had been afraid to come on in the dark, so had encamped in the road. I now got the house swept out, and my things taken into it. It consisted of two small rooms, and a little verandah at the back; the larger room contained a table, chair, and bench, and in the smaller I hung up my hammock. My porters then came to be paid for bringing over my goods. All wanted salt, and I gave them a basinful each and a few fish-hooks, for carrying a heavy load ten miles: this is about their regular payment.

I had now reached the furthest point in this direction that I had wished to attain. I had passed the boundary of the mighty Amazon valley, and was among the streams that go to swell another of the world's great waters—the Orinooko. A deficiency in all other parts of the Upper Amazon district was here supplied,—a road through the virgin forest, by which I could readily reach its recesses, and where I was more sure of obtaining the curious insects of so distant a region, as well as the birds and other animals which inhabit it; so I determined to remain here at least a month, steadily at work. Every day I went myself along the road, and sent my Indians, some to fish in the little black river Temi, others with their gravatánas to seek for the splendid trogons, monkeys, and other curious birds and animals in the forest.

Unfortunately, however, for me, on the very night I reached the village it began to rain, and day after day cloudy and showery weather continued. For three months Javíta had enjoyed the most splendid summer weather, with a clear sky and hardly a shower. I had been wasting all this time in the rainy district of the cataracts of the Rio Negro. No one there could tell me that the seasons, at such a short distance, differed so completely, and the consequence was that I arrived at Javíta on the very last day of summer.

The winter or rainy season commenced early this year. The river kept rapidly rising. The Indians constantly assured me that it was too soon for the regular rains to commence,—that we should have fine weather again,—the river would fall, and the winter not set in for two or three weeks. However, such was not the case. Day after day the rain poured down; every afternoon or night was wet, and a little sunshine in the morning was the most we were favoured with. Insects consequently were much more scarce than they otherwise would have been, and the dampness of the atmosphere rendered it extremely difficult to dry and preserve those that I obtained. However, by perseverance I amassed a considerable number of specimens; and what gave me the greatest pleasure was, that I almost daily obtained some new species which the Lower Amazon and Rio Negro had not furnished me with. During the time I remained here (forty days), I procured at least forty species of butterflies quite new to me, besides a considerable collection of other orders; and I am sure that during the dry season Javíta would be a most productive station for any persevering entomologist. I never saw the great blue butterflies, Morpho Menelaus, M. Helenor, etc., so abundant as here. In certain places in the road I found them by dozens sitting on the ground or on twigs by the roadside, and could easily have captured a dozen or twenty a day if I had wanted them. In birds and mammalia I did not do much, for my Indians wanted to get back, and were lazy and would not hunt after them. During my walks in the forest, I myself saw wild-pigs, agoutis, coatis, monkeys, numerous beautiful trogons, and many other fine birds, as well as many kinds of serpents.