As night fell we camped on a deserted island in the middle of the river. We dined in the moonlight sitting on scattered empty turtle shells. How pleasing it was to be safe and together! We imagined how it would be if one man had saved himself alone, wandering these deserted banks, meeting more and more tributaries and unable to swim because of the crocodile and caribe fish. We pictured this sensitive man never knowing what had happened to his companions, more worried about them than himself. If you like surrendering to these sad thoughts it is because escaping from danger makes you feel the need for strong emotions.

In this part of the cavern the rivulet deposits blackish earth, a mixture of silex, clay and vegetable detritus. We walked in thick mud to a place where, to our shock, we discovered underground vegetation. The seeds that the birds bring into the grotto to feed to their chicks germinate wherever they fall on to earth covering the calcareous Incrustations. Blanched stalks with rudimentary leaves rose to some 2 feet. It was impossible to identify the plants as the absence of light had completely transformed their form, color and aspect. These traces of plant life in the dark struck the Indians, usually so stupid and difficult to impress. They examined the plants in a silence inspired by a place they fear. You could have said these pale, deformed, underground plants seemed like ghosts banished from the earth's surface. For me, however, they recalled one of the happiest days of my youth when during a long stay at the Freiberg mines I began my research into the effects of blanching plants.

We saw several beautiful species of large aras (guacamayos) in the hands of Indians who had killed them in the nearby jungle to eat them. We began to dissect their enormous brains, though they are far less intelligent than parrots. I sketched the parts while Bonpland cut them apart; I examined the hyoid bone and the lower larynx, which cause this bird's raucous sounds. It was the kind of research that Cuvier had recently instigated in anatomy and it appealed to me. I began to console myself for the loss of my barometer. Night did not allow me to determine our latitude through the stars. On the 20th of April at three in the morning, while it was still delightfully fresh, we set off for the Magdalena river landing-stage in the village of Barancas Nuevas. We were still in the thick jungle of bamboos, Palma amarga and mimosas, especially the inga with purple flowers. Halfway between Mahates and Barancas we came across some huts raised on bamboo trunks inhabited by zambos. This mixture of negro and Indian is very common around here. Copper-colored women are very attracted to African men and many negroes from Choco, Antioquia province and Simitarra, once they gained their freedom by working hard, have settled in this river valley. We have often reminded you how the wisdom of the oldest Spanish laws favored the freeing of black slaves while other European nations, boasting of a high degree of civilization, have hindered and continue to hinder this absurd and inhuman law. (146)

We suffered much from the heat, increased by the reverberation from the dry, dusty ground. However, the excessive effect of the sun held no harmful consequences for us. At La Guaira sunstroke and its effects on the brain are feared, especially when yellow fever is beginning to appear. One day I was on the roof of our house observing the meridian point and the temperature difference between the sun and shade when a man came running towards me and begged me to take a drink he had brought along with him. He was a doctor who had been watching me for half an hour out in the sun from his window, without a hat on my head, exposed to the sun's rays. He assured me that coming from northern climes such imprudence would undoubtedly lead that night to an attack of yellow fever if I did not take his medicine. His prediction, however seriously argued, did not alarm me as I had had plenty of time to get acclimatized. But how could l refuse his argument when he was so polite and caring? I swallowed his potion, and the doctor must now have included me in the list of people he had saved from fever that year. (67)

Smallpox, which has so devastated other areas of America that Indians burn their huts, kill their children and avoid any grouping of tribes, is not one of the reasons for the depopulation of the Raudales. In the Upper Orinoco this plague is almost unknown. Desertion from Christian missionaries must be sought more in the Indian's hate for the discipline, the poor food, the awful climate, and the unpardonable custom that Indian mothers have of using poisonous herbs to avoid pregnancy. Many of the women do not want to have babies. If they do have children they are not only exposed to jungle dangers but also to absurd superstitions. When twins are born family honor demands that one be killed. Indians say: 'To bring twins into the world is to be exposed to public scorn, it is to resemble rats, sarigues and the vilest animals. And, 'Two children born at the same time cannot belong to the same father. If a newborn child shows some physical deformity the father kills it immediately. They want only well-formed, robust children because deformities indicate some evil spell. Among the Orinoco Indians the father returns home only to eat or sleep in his hammock; he shows no affection for his children or his wife, who are there only to serve him.

After struggling a while with our plan to descend the Guarapiche river to the Golfo Triste, we took the direct road to the mountains. The Guanaguana and Caripe valleys are separated by an embankment or calcareous ridge famous for miles around for its name Cuchilla de Guanaguana. We found this way tiring because we still had to climb the cordilleras, but it is by no means as dangerous as they claim in Cumanà. In many places the path is no more than 14 or 15 inches wide; the mountain ridge it follows is covered with a short slippery grass; its sides are both very steep and the traveler who fell could roll some 700 to 800 feet down over that grass. However, the mountain has abrupt slopes, not precipices. The local mules are so sure-footed that they inspire confidence. They behave just like mules from Switzerland or the Pyrenees. The wilder a country, the more acute and sensitive is instinct in domestic animals. When the mules glimpse a danger they stop and turn their heads from right to left and raise and lower their ears as if thinking. They delay making up their minds, but always choose the right course of action if the traveler does not distract them or make them continue. In the Andes, during journeys of six and seven months, in mountains furrowed with torrents, the intelligence of horses and beasts of burden develops in a surprising way. You often hear mountain people say: 'I will not give you a mule with a comfortable gait, but the one that reasons best (la màs racional). This popular expression, the result of long experiences, contradicts far more convincingly than speculative philosophy those who claim that animals are simply animated machines.

The fresh north-east wind blew us at full sail towards the boca de la tortuga. At eleven in the morning we landed on an island, which the Indians of the Uruana mission regard as their own, situated in the middle of the river. This island is famous for the fishing of turtles or, as is said here, the cosecha, or annual harvest of eggs. We found a group of Indians camping in palm-leaf huts. This camp-site had over 300 people in it. As we had been used, since San Fernando de Apure, to seeing only deserted beaches, we were struck by the bustle. Apart from Guamos and Otomacs, seen as two wild and untamed tribes, there were Caribs and other Indians from the Lower Orinoco. Each tribe camped separately, and could be recognized only by the different paints on their skins. We also found, among this noisy reunion, some white men, mainly pulperos, the small traders from Angostura, who had come upstream to buy turtle-egg oil from the Indians. The Uruana missionary, from Alcalà de Henares, came to meet us, extremely surprised to see us there. After inspecting our instruments, he exaggeratedly described the hardships we would suffer going further upstream beyond the cataracts. The purpose of our journey seemed very mysterious to him. 'How is anyone to believe, he said, 'that you left your homeland to come up this river to be eaten by mosquitoes and measure lands that do not belong to you? Luckily we were armed with recommendations from the guardian father of the Franciscan missions, while the brother-in-law of the Barinas governor accompanying us soon resolved the doubts that the whites there had about our dress, accent and arrival on the island. The missionary invited us to share a frugal meal of bananas and fish with him. He told us he had come to camp with the Indians during the harvesting of the eggs 'to celebrate open-air mass every day, to get oil for the lights in his church, and above all to govern this Republica de Indios y Castellanos where individuals wanted to profit selfishly with what God had given to everybody'.