But the shores of Lake Valencia are not famed solely for their picturesque beauties: the basin presents several phenomena whose interpretation holds great interest for natural historians and for the inhabitants. What causes the lowering of the lake's water-level? Is it receding faster than before? Will the balance between the flowing in and the draining out be restored, or will the fear that the lake might dry up be proved justified?

April 29th. The air was cooler, and without zancudos, but the clouds blocked out all the stars. I begin to miss the Lower Orinoco as the strong current slowed our progress. We stopped for most of the day, looking for plants. It was night when we reached the San Baltasar mission or, as the monks call it, la divina pastora de Baltasar de Atabapo. We lodged with a Catalan missionary, a lively and friendly man who, in the middle of the jungle, displayed the activities of his people. He had planted a wonderful orchard where European figs grew with persea, and lemon trees with mamey. The village was built with a regularity typical of Protestant Germany or America. Here we saw for the first time that white and spongy substance which I have made known as dapicho and zapis. We saw that this stuff was similar to elastic resin. But through sign language the Indians made us think that it came from under ground so we first thought that maybe it was a fossil rubber. A Poimisano Indian was sitting by a fire in the missionary hut transforming dapicho into black rubber. He had stuck several bits on to thin sticks and was roasting it by the fire like meat. As it melts and becomes elastic the dapicho blackens. The Indian then beat the black mass with a club made of Brazil-wood and then kneaded the dapicho into small balls some 3 to 4 inches thick, and let them cool. The balls appear identical to rubber though the surface remains slightly sticky. At San Baltasar they are not used for the game of pelota that Indians play in Uruana and Encaramada but are cut up and used as more effective corks than those made from cork itself. In front of the Casa de los Solteros - the house where men lived - the missionary showed us a drum made from a hollow cylinder of wood. This drum was beaten with great lumps of dapicho serving as drumsticks. The drum has openings that could be blocked by hand to vary the sounds, and was hanging on two light supports. Wild Indians love noisy music. Drums and botutos, the baked-earth before trumpets, are indispensable instruments when Indians decide to play music and make a show.

The last days of our crossing were not as peaceful as the mild climate and calm ocean had led us to hope. We were not disturbed by the dangers of the deep, but by the presence of a malignant fever that developed as we approached the West Indies. Between the overcrowded decks the heat was unbearable; the thermometer stayed at 36'C. Two sailors, several passengers and, strangely, two blacks from the Guinean coast and a mulatto child were attacked by an illness that threatened to turn into an epidemic. The symptoms were not as serious in all the sick; but some of them, even among the most robust, became delirious on the second day and lost all body strength. With that indifference which on passenger ships affects everything that is not to do with the ship's movements and speed, the captain did not for a moment think of applying the simplest remedies. He did not fumigate. A phlegmatic and ignorant Galician surgeon prescribed bleedings, attributing the fever to what he called the heat and corruption of blood. There was not an ounce of quinine on board and we, on boarding, had forgotten to bring a supply, more concerned for our instruments than for our health as we had not predicted that a Spanish ship would be without this Peruvian bark febrifuge.

When a traveler recently arrived from Europe steps into South American jungle for the first time he sees nature in a completely unexpected guise. The objects that surround him only faintly bring to mind those descriptions by famous writers of the banks of the Mississippi, of Florida and of other temperate regions of the New World. With each step he feels not at the frontiers of the torrid zone but in its midst; not on one of the West Indian Islands but in a vast continent where everything is gigantic; mountains, rivers and the masses of plants. If he is able to feel the beauty of landscape, he will find it hard to analyse his many impressions. He does not know what shocks him more: whether the calm silence of the solitude, or the beauty of the diverse, contrasting objects, or that fullness and freshness of plant life in the Tropics. It could be said that the earth, overloaded with plants, does not have sufficient space to develop. Everywhere tree trunks are hidden behind a thick green carpet. If you carefully transplanted all the orchids, all the epiphytes that grow on one single American fig tree (Ficus gigantea) you would manage to cover an enormous amount of ground. The same lianas that trail along the ground climb up to the tree-tops, swinging from one tree to another 100 feet up in the air. As these parasitical plants form a real tangle, a botanist often confuses flowers, fruit and leaves belonging to different species.

The city, dominated by the fort, lies at the foot of a hill without greenery. Not one bell-tower nor one dome attract the traveler from afar; just a few tamarind trees and coconut and date palms stand out above the flat-roofed houses. The surrounding plains, especially near the sea, appear sad, dusty and arid, while fresh, luxuriant vegetation marks out the winding river that divides the city from its outskirts and the European settlers from the copper-colored Indians. The isolated, bare and white San Antonio mountain, with its fort, reflects a great mass of light and heat: it is made of breccia, whose strata contain fossil marine life. Far away towards the south you can make out a dark curtain of mountains. They are the high calcareous New Andalusian alps, topped with sandstone and other recent geological formations. Majestic forests cover this inland mountain chain linked along a forested valley with the salty, clayey and bare ground around Cumana. In the gulf and on its shores you can see flocks of fishing herons and gannets, awkward, heavy birds, which, like swans, sail along the water with their wings raised. Nearer the inhabited areas, you can count thousands of gallinazo vultures, veritable flying jackals, ceaselessly picking at carcasses. A gulf whose depths contain hot thermal springs divides the secondary from the primary and schistose rocks of the Araya peninsula. The two coasts are bathed by a calm blue sea lightly rippled by a constant breeze. A dry, pure sky, only lightly clouded at sunset, lies above the sea, over a peninsula devoid of trees and above the Cumana plains, while one sees storms building up and bursting into fertile downpours around the inland mountain peaks.

The Chaimas, like all semi-wild people in hot climates, show a great aversion to clothes. In the torrid zone the Indians are ashamed so they say to wear clothes, and if they are forced to do so too soon they rush off into the jungle in order to remain naked. Despite the efforts of the monks the Chaima men and women walk around naked in their houses. When they go into villages they put on a kind of cotton shirt, which hardly reaches to their knees. Sometimes we met Indians outside the mission grounds, during a rainstorm, who had taken their clothes off and rolled them under their arms. They prefer to let the rain fall on their naked bodies than letting it wet their clothes. The older women hid behind trees and burst into loud fits of laughter when they saw us pass by fully dressed.

Like all the Indian tribes that I know the Chaimas have small, slender hands. Contrary to this, their feet are large, and their toes remain extremely mobile. All the Chaimas resemble each other, as if they were all related, and this is all the more evident because between twenty and fifty years old, age is not indicated by wrinkling skin, white hair or body decrepitude. When you enter a hut it is hard to differentiate a father from a son, one generation from another. I think that this family resemblance has two different causes: the local position of the Indian villages, and the lack of intellectual culture. Indian nations are subdivided into an infinity of tribes, all hating each other, and never allied even if speaking the same language or living on the same river or nearby hill. This characteristic is preserved in the missions where marriages are made only within tribes. This blood link that unites a whole tribe is naively illustrated by those Spanish-speaking Indians who designate members of the same tribe as mis parientes (my relatives).