Seated on the crater's external edge we turned our eyes towards the north-east where the coasts are decorated with villages and hamlets. At our feet masses of mist, continually tossed about by the winds, changed shape all the time. A uniform layer of cloud between us and the lower regions of the island had been pierced here and there by wind currents sent up from the heated earth. The Orotava bay, its vessels at anchor, the gardens and vineyards round the town, appeared in an opening that seemed to enlarge all the time. From these solitary I regions our eyes dived down to the inhabited world below; we enjoyed the striking contrasts between the peak's arid slopes, its steep sides covered with scoriae, its elevated plains devoid of vegetation, and the smiling spectacle of the cultivated land below. We saw how plants were distributed according to the decreasing temperatures of altitudes. Below the peak lichens begin to cover the scorious and polished lava; a violet (Viola cheiranthifolia) similar to the Viola decumbens climbs the volcano's slopes up to 1, toises above all other herbaceous plants. Tufts of flowering broom decorate the valleys hollowed out by the torrents and blocked by the effects of lateral eruptions. Below the retama lies the region of ferns, and then the arborescent heaths. Laurel, rhamnus and strawberry-tree woods grow between the scrub and the rising ground planted with vines and fruit trees. A rich green carpet extends from the plain of brooms and the zone of alpine plants to groups of date palms and banana trees whose feet are bathed by the ocean.

On the 14th of March we entered the Guaurabo river at one of Trinidad de Cuba's two ports, to put our pràctico, or pilot, who had steered us through the Jardinillos and run us aground, ashore. We also hoped to catch a correo marítimo (mail-boat) to Cartagena. Towards evening I landed and began to set up Borda's azimuth compass and the artificial horizon to observe the stars when a party of pulperos, or small traders, who had dined on board a foreign ship cheerfully invited us to accompany them into town. These good people asked us to mount two each to a horse; as it was excessively hot we accepted their offer. The road to Trinidad runs across a plain covered with vegetation where the miraguama, a silver-leafed palm tree, stands out. This fertile soil, although of tierra colorada, needs only to be tilled to yield rich harvests. After emerging from a forest we saw a curtain of hills whose southern slope was covered with houses. This is Trinidad, founded in 1514 on account of the 'rich gold mines' said to lie in the Armani river valley. The streets of Trinidad are all very steep and again show why people complain, as they do over all Spanish America, of how badly the conquistadores chose the sites of new towns.

We crossed some violent rapids before reaching the Mandavaca mission. The village, also called Quirabuena, has only sixty inhabitants. Most of these Christian settlements are in such a deplorable condition that over a stretch of 50 leagues we counted barely 200 people. The river banks were more populated before the arrival of the missionaries. The Indians retreated into the jungle towards the east as the plains on the west are uninhabited. They live for part of the year off the large ants I have already described. In Mandavaca we met a good missionary who had spent 'over twenty years of mosquitoes in the Casiquiare jungles' and whose legs were so spotted by mosquito bites that you could hardly see he was a white. He spoke of his isolation, and the sad necessity that forced him to witness how the most atrocious crimes went unpunished. In Vasiva a few years before an Indian chief had eaten one of his wives after taking her from her conuco and fattening her up with plenty of food. If the Guiana Indians eat human flesh it is not because of privations, or during rituals, but out of vengeance after a victory or, as the missionaries say, 'out of their perverted greed'. Victory over an enemy horde is celebrated with a feast where parts of prisoners' corpses are eaten. During the night an enemy family is attacked, or an enemy found by chance in the jungle is killed by a poisoned arrow. The corpse is cut up and brought home like a trophy. Civilization has led man to sense the unity of the human race, the bonds that link him to customs and languages which he does not know. Wild Indians hate all those who do not belong to their tribe or family. Indians who are at war with a neighboring tribe hunt them as we would animals in the wood. When they see unknown jungle Indians arrive at their mission they say: 'They must be related to us as we understand what they say. They recognize only their own family: a tribe is but a reunion of relations. They recognize family and kin ties, but not those of humanity in general. No feelings of compassion prevent them from killing women or children of an enemy tribe. These latter are their favorite food after a skirmish or ambush.

Concerning the country I have traveled through, I am fully aware of the great advantages enjoyed by those who travel to Greece, Egypt, the banks of the Euphrates, and the Pacific Islands over those who travel to America. In the Old World the nuances and differences between nations form the main focus of the picture. In the New World, man and his productions disappear, so to speak, in the midst of a wild and outsize nature. In the New World the human race has been preserved by a few scarcely civilized tribes, or by the uniform customs and institutions transplanted on to foreign shores by European colonists. Facts about the history of our species, different kinds of government and monuments of art affect us far more than descriptions of vast emptinesses destined for plants and wild animals.

We walked for hours in the shade of these plant vaults that scarcely let us catch glimpses of the blue sky, which appeared to be more of a deep indigo blue because the green, verging on brown, of tropical plants seemed so intense. A great fern tree (perhaps Aspidium caducum) rose above masses of scattered rock. For the first time we saw those nests in the shape of bottles or small bags that hang from the lower branches. They are the work of that clever builder the oriole, whose song blends with the noisy shrieking of parrots and macaws. These last, so well known for their vivid colors, fly around in pairs, while the parrots proper fly in flocks of hundreds. A man must live in these regions, particularly the hot Andean valleys, to understand how these birds can sometimes drown the noise of waterfalls with their voices.

The military establishment of this frontier consists of seventeen soldiers, ten of whom are detached in neighboring missions. The humidity is such that hardly four rifles work. The Portuguese have twenty-five better-dressed and better-armed men in the fort of San Jose de Maravitanos. In the San Carlos mission we found a garita, or square house, built with unbaked bricks, with six rooms. The fort, or as they prefer to call it, the Castillo de San Felipe, is on the right bank of the Río Negro, vis-à-vis San Carlos. The commander showed some scruples, and refused to allow Bonpland and myself to visit the fort as our passports clearly stated we could measure mountains and perform trigonometric operations on land, but we could not see inside fortified places. Our fellow traveler, Don Nicolás Soto, a Spanish officer, was luckier, and was allowed to cross the river.

If you compare the Río Negro with the Amazon, the River Plate or the Orinoco it is but a river of the second order. Possessing it has been, for centuries, of great political interest for the Spanish Government because it affords its rivals, the Portuguese, easy access into the Guianan missions to worry the Capitanía-General of Caracas in its southern limits. Three hundred years have passed in pointless territorial disputes. In different times, according to their degree of civilization, people have leaned either on papal authority or on astronomy. As they have generally been keener to prolong this dispute rather than solve it, only nautical science and geography have gained anything. When the affairs of Paraguay and the possession of the Sacramento colony became important for the two Courts of Madrid and Lisbon, commissioners were sent out to study the boundaries of the Orinoco, Amazon and River Plate. Besides the idle, who filled archives with their complaints and lawsuits, there were a few educated engineers and some naval officers acquainted with the means of determining the position of a place. The little we knew up to the of the last century about the geography of the interior of the Continent is due to these hard-working men. It is pleasing to remind ourselves that the sciences gained accidentally from these border commissions, often forgotten by the states that sent them out.