Travels on the Amazon. Alfred Russel Wallace
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The island of Mexiana is about twenty-five miles long by twelve broad, of a regular oval shape, and is situated exactly on the equator. It is quite flat, and is all campo, or open ground, but dotted with scattered trees and bushes, and with a little forest at the water's edge. It is celebrated for its birds, alligators, and onças, and is used as a cattle estate by the proprietor. The alligators abound in a lake in the centre of the island, where they are killed in great numbers for their fat, which is made into oil.
I was accompanied by Mr. Yates, a collector of Orchids, who, after a few weeks' stay, not finding much variety of those plants, returned to Pará. On our arrival we were received by Senhor Leonardo, a German, who is the overseer, to whom we presented our letter from Mr. C. We were then shown the rooms we were to occupy in the house, which is spacious and has an upper story; and having got our luggage on shore, we soon made ourselves at home. Round the house are a good many orange and mango trees, behind which is a row of cottages, where reside the vaqueiros or herdsmen, who are mostly Negroes and slaves; and beyond, as far as the eye can reach, is the flat campo, dotted over with cattle and horses.
On inquiring about the best localities for insects, birds, and plants, we were rather alarmed by being told that onças were very numerous, even near the house, and that it was dangerous to walk out alone or unarmed. We soon found, however, that no one had been actually attacked by them; though they, poor animals, are by no means unmolested, as numerous handsome skins drying in the sun, and teeth and skulls lying about, sufficiently proved. There is no doubt but they are unpleasant animals to encounter, and their teeth and claws are so fearfully adapted to destroy whatever may come within their reach, that it is much better to be a little cautious, than to run any risk: I therefore put half-a-dozen bullets in my game-bag, in case of an encounter.
Some of the horses and cattle were miserable-looking objects, from wounds inflicted by the bats, which cause them to lose much blood, and sometimes, by successive attacks, kill them. Senhor Leonardo informed us that they particularly abounded in some parts of the island, and that he often has bat-hunts, when several thousands are killed. It is a large species, of coffee-brown colour, probably the Phyllostoma hastatum.
The morning after my arrival I took my gun, and walked out to see what sport the island afforded. First going to a tree near the house, which Senhor Leonardo pointed out to me, I found numerous humming-birds fluttering about the leaves (which were still wet with dew), and seeming to wash and cool themselves with the moisture: they were of a blue and green colour, with a long forked tail (Campylopterus hirundinaceus). Walking on in the campo, I found abundance of Bemteví fly-catchers, cuckoos, and tanagers, and also shot a buzzard and a black eagle different from any I had seen at Pará. Insects were very scarce, owing to the dryness of the season and the absence of forest; so I soon gave up collecting them, and attended entirely to birds, which were rather plentiful, though not very rare or handsome. In ten days I obtained seventy specimens, among which were fourteen hawks and eagles, several herons, egrets, paroquets, woodpeckers, and one of the large yellow-billed toucans (Rhamphastos Toco), which are not found at Pará.
Having made several excursions for some miles into the interior of the island and along the coast, I obtained a tolerable idea of its geography. It is everywhere a perfect flat, the greatest elevations being a very few feet. Along the shore in most places, and extending along the banks of the creeks inland, is a belt of forest, varying in width from a hundred yards to half a mile, containing a few palms and lofty trees, and abundance of bamboos and climbers, rendering it almost impassable. The whole of the interior is campo, or open plain, covered with a coarse herbage, and in places sprinkled with round-headed palms, and with low branching trees bearing a profusion of yellow flowers. Scattered about, at intervals of a few miles, are clumps of trees and bushes, some very small, but others sufficiently extensive to form little forests. These are generally known as "ilhas," or islands, and many of them have separate names, as, "Ilha do São Pedro," "Ilha dos Urubus." In the wet season a great part of the island appears to be flooded, and dead crabs and fresh-water shells are found a long way inland: these groves are then probably real islands, though not perceptibly above the general level.
A phenomenon, which is seen on the banks of the Mississippi and most other rivers which overflow their banks, also occurs here. The land is highest near the water's edge, and gradually falls inland, caused by the heavier sediment being deposited during floods at the shortest distance, while the lighter matter only is carried inland, and spread over a larger area. The surface of the campos is very uneven for walking, being in little clumps or hillocks, so that it is equally tiresome and fatiguing to walk on their summits or between them. The stems of the palms were all covered with orchideous plants, but they had now generally neither leaves nor flowers, and seemed to be of very little variety of species. In the marshy places shrubby convolvuli are abundant, and in others are large beds of cassias and mimosas, while scattered among them are many delicate little flowers.
Long-tailed, light-coloured cuckoos were continually flying about from tree to tree, uttering their peculiar note, not at all like that of our cuckoo, but more like the creaking of a rusty hinge, which the name given to them, Carerú, is intended to resemble. Equally abundant are the black hornbill cuckoos, called Anús; and on almost every tree may be seen sitting a hawk or buzzard, the variety of which is very great, as in a few weeks I obtained eight different kinds. Pretty paroquets, with white and orange bands on their wings, and others with an orange-coloured crown, were very plentiful, and it was amusing to watch the activity with which they climbed about over the trees, and how suddenly and simultaneously they flew away when alarmed. Their plumage is so near the colour of the foliage, that it is sometimes impossible to see them, though you may have watched a whole flock enter a tree, and can hear them twittering overhead, when, after gazing until your patience is exhausted they will suddenly fly off with a scream of triumph.
Then among the bushes there were flocks of the beautiful red-breasted oriole, Icterus militaris; but they were unfortunately not in good plumage at the time of my visit. The common black vulture is generally to be seen sailing overhead, or seated on some dead tree; and great Muscovy ducks fly past with a rushing sound, like some great aërial machine beating the air violently to support its ponderous body, and offering a striking contrast to the great wood-ibis, which sails along with noiseless wings in flocks of ten or a dozen. In the skirts of forest and in the larger "ilhas," black and spotted jaguars are often found, while pacas, cotias, tatus or armadillos, deer, and other small game are plentiful.
The whole population of the island consists of about forty persons, of whom twenty are slaves, and the remainder free Indians and Negroes in the employ of the proprietors. These are all engaged in attending to the cattle and horses on the island, which vary in number, and were much more numerous three or four years ago; the horses in particular having been almost exterminated by a disease which suddenly appeared among them. There were now about fifteen hundred head of cattle, besides a great number of wild ones, which keep in the remote parts of the island, and four hundred horses. The slaves and labourers are allowed farinha only; but they can cultivate Indian corn and vegetables for themselves, and have powder and shot given them for hunting, so that they do not fare so badly. They also have tobacco allowed them, and most of them earn money by making baskets or other trifles, or by killing onças, the skin being worth from five to ten shillings. Besides attending to the cattle and horses,