– may be described as one unbroken forest. We now know the borders of this forest with considerable exactness, but to trace them here would require a too lengthened detail. Suffice it to say, that lengthwise it extends from the mouth of the Amazon to the foothills of the Peruvian Andes, a distance of 2,500 miles. In breadth it varies, beginning on the Atlantic coast with a breadth of 400 miles, which widens towards the central part of the continent till it attains to 1,500, and again narrowing to about 1,000, where it touches the eastern slope of the Andes.
That form of leaf known to botanists as “obovate” will give a good idea of the figure of the great Amazon forest, supposing the small end or shank to rest on the Atlantic, and the broad end to extend along the semicircular concavity of the Andes, from Bolivia on the south to New Granada on the north. In all this vast expanse of territory there is scarce an acre of open ground, if we except the water-surface of the rivers and their bordering “lagoons,” which, were they to bear their due proportions on a map, could scarce be represented by the narrowest lines, or the most inconspicuous dots. The grass plains which embay the forest on its southern edge along the banks of some of its Brazilian tributaries, or those which proceed like spurs from the Llanos of Venezuela, do not in any place approach the Amazon itself, and there are many points on the great river which may be taken as centres, and around which circles may be drawn, having diameters 1,000 miles in length, the circumferences of which will enclose nothing but timbered land. The main stream of the Amazon, though it intersects this grand forest, does not bisect it, speaking with mathematical precision. There is rather more timbered surface to the southward than that which extends northward, though the inequality of the two divisions is not great. It would not be much of an error to say that the Amazon river cuts the forest in halves. At its mouth, however, this would not apply; since for the first 300 miles above the embouchure of the river, the country on the northern side is destitute of timber. This is occasioned by the projecting spurs of the Guiana mountains, which on that side approach the Amazon in the shape of naked ridges and grass-covered hills and plains.
It is not necessary to say that the great forest of the Amazon is a tropical one – since the river itself, throughout its whole course, almost traces the line of the equator. Its vegetation, therefore, is emphatically of a tropical character; and in this respect it differs essentially from that of North America, or rather, we should say, of Canada and the United States. It is necessary to make this limitation, because the forests of the tropical parts of North America, including the West-Indian islands, present a great similitude to that of the Amazon. It is not only in the genera and species of trees that the sylva of the temperate zone differs from that of the torrid; but there is a very remarkable difference in the distribution of these genera and species. In a great forest of the north, it is not uncommon to find a large tract covered with a single species of trees, – as with pines, oaks, poplars, or the red cedar (Juniperus Virginiana). This arrangement is rather the rule than the exception; whereas, in the tropical forest, the rule is reversed, except in the case of two or three species of palms (Mauritia and Euterpe), which sometimes exclusively cover large tracts of surface. Of other trees, it is rare to find even a clump or grove standing together – often only two or three trees, and still more frequently, a single individual is observed, separated from those of its own kind by hundreds of others, all differing in order, genus, and species. I note this peculiarity of the tropic forest, because it exercises, as may easily be imagined, a direct influence upon the economy of its human occupants – whether these be savage or civilised. Even the habits of the lower animals – beasts and birds – are subject to a similar influence.
It would be out of place here to enumerate the different kinds of trees that compose this mighty wood, – a bare catalogue of their names would alone fill many pages, – and it would be safe to say that if the list were given as now known to botanists, it would comprise scarce half the species that actually exist in the valley of the Amazon. In real truth, this vast Garden of God is yet unexplored by man. Its border walks and edges have alone been examined; and the enthusiastic botanist need not fear that he is too late in the field. A hundred years will elapse before this grand parterre can be exhausted.
At present, a thorough examination of the botany of the Amazon valley would be difficult, if not altogether impossible, even though conducted on a grand and expensive scale. There are several reasons for this. Its woods are in many places absolutely impenetrable – on account either of the thick tangled undergrowth, or from the damp, spongy nature of the soil. There are no roads that could be traversed by horse or man; and the few paths are known only to the wild savage, – not always passable even by him. Travelling can only be done by water, either upon the great rivers, or by the narrow creeks (igaripes) or lagoons; and a journey performed in this fashion must needs be both tedious and indirect, allowing but a limited opportunity for observation. Horses can scarce be said to exist in the country, and cattle are equally rare – a few only are found in one or two of the large Portuguese settlements on the main river – and the jaguars and blood-sucking bats offer a direct impediment to their increase. Contrary to the general belief, the tropical forest is not the home of the larger mammalia: it is not their proper habitat, nor are they found in it. In the Amazon forest but few species exist, and these not numerous in individuals. There are no vast herds – as of buffaloes on the prairies of North America, or of antelopes in Africa. The tapir alone attains to any considerable size, – exceeding that of the ass, – but its numbers are few. Three or four species of small deer represent the ruminants, and the hog of the Amazon is the peccary. Of these there are at least three species. Where the forest impinges on the mountain regions of Peru, bears are found of at least two kinds, but not on the lower plains of the great “Montaña,” – for by this general designation is the vast expanse of the Amazon country known among the Peruvian people. “Montes” and “montañas,” literally signifying “mountains,” are not so understood among Spanish Americans. With them the “montes” and “montanas” are tracts of forest-covered country, and that of the Amazon valley is the “Montana” par excellence.
Sloths of several species, and opossums of still greater variety, are found all over the Montana, but both thinly distributed as regards the number of individuals. A similar remark applies to the ant-eaters or “ant-bears,” of which there are four kinds, – to the armadillos, the “agoutis,” and the “cavies,” one of which last, the capibara, is the largest rodent upon earth. This, with its kindred genus, the “paca,” is not so rare in individual numbers, but, on the contrary, appears in large herds upon the borders of the rivers and lagoons. A porcupine, several species of spinous rats, an otter, two or three kinds of badger-like animals (the potto and coatis), a “honey-bear” (Galera barbara), and a fox, or wild dog, are widely distributed throughout the Montana.
Everywhere exists the jaguar, both the black and spotted varieties, and the puma has there his lurking-place. Smaller cats, both spotted and striped, are numerous in species, and squirrels of several kinds, with bats, complete the list of the terrestrial mammalia.
Of all the lower animals, monkeys are the most common, for to them the Montana is a congenial home. They abound not only in species, but in the number of individuals, and their ubiquitous presence contributes to enliven the woods. At least thirty different kinds of them exist in the Amazon valley, from the “coatas,” and other howlers as large as baboons, to the tiny little “ouistitis” and “säimiris,” not bigger than squirrels or rats.
While we must admit a paucity in the species of the quadrupeds of the Amazon, the same remark does not apply to the birds. In the ornithological department of natural history, a fulness and richness here exist, perhaps not equalled elsewhere. The most singular and graceful forms, combined with the most brilliant plumage, are everywhere presented to the eye, in the parrots and great macaws, the toucans, trogons, and tanagers, the shrikes, humming-birds, and orioles; and even in the vultures and eagles: for here are found the most beautiful of predatory birds, – the king vulture and the harpy eagle. Of the feathered creatures existing in the valleys of the Amazon there are not less than one thousand different species, of which only one half have yet been caught or described.
Reptiles
