On the evening of the 25th of June we left Santa Cruz and set our course for South America. A strong north-westerly was blowing and tight, sharp waves were caused by strong currents. We soon lost sight of the Canary Islands above whose high peaks a reddish mist appeared; only the Pico de Teide reappeared briefly from time to time as the wind dispersed the clouds surrounding the peak. For the first time we realized how deeply we are stirred by the sight of land situated on the limits of the torrid zone, where nature appears so opulent, grandiose and marvelous. We had stayed at Tenerife for a few days only, yet we left the island feeling we had lived there for a long time.

The earthquake of the 4th of November, the first I had experienced, made a great impression on me, heightened, perhaps accidentally, by remarkable meteorological variations. It was also a movement that went up and down, not in waves. I would never have thought then that, after a long stay in Quito and on the Peruvian coast, I would get as used to these often violent ground movements as in Europe we get used to thunder. In Quito we never considered getting out of bed when at night there were underground rumblings (bramidos), which seemed to announce a shock from the Pichincha volcano. The casualness of the inhabitants, who know that their city has not been destroyed in three centuries, easily communicates itself to the most frightened traveler. It is not so much a fear of danger as of the novelty of the sensation that strikes one so vividly when an earthquake is felt for the first time.

We had yet to climb the steepest part of the mountain, the Piton, which forms the summit. The slope of this small cone, covered with volcanic ashes and fragments of pumice-stone, is so steep that it would have been impossible to reach the top had we not been able to follow an old lava current that seemed to have flowed down from the crater and whose remains have defied the ravages of time. The debris forms a wall of scoria, which reaches into the loose ash. We climbed to the Piton by clinging to this sharp-edged scoria, which, worn down by the weather, often broke off in our hands. It took us half an hour to reach the top, though it was only some 90 toises above us.

The destruction of the forests, the clearing of the plains, and the cultivation of indigo over half a century has affected the amount of water flowing in as well as the evaporation of the soil and the dryness of the air, which forcefully explains why the present Lake Valencia is decreasing. By felling trees that cover the tops and sides of mountains men everywhere have ensured two calamities at the same time for the future: lack of fuel, and scarcity of water. Trees, by the nature of their perspiration, and the radiation from their leaves in a cloudless sky, surround themselves with an atmosphere that is constantly cool and misty. They affect the amount of springs by sheltering the soil from the sun's direct actions and reducing the rainwater's evaporation. When forests are destroyed, as they are everywhere in America by European planters, with imprudent haste, the springs dry up completely, or merely trickle. River beds remain dry part of the year and are then turned into torrents whenever it rains heavily on the heights. As grass and moss disappear with the brushwood from the mountainsides, so rainwater is unchecked in its course. Instead of slowly raising the river level by filtrations, the heavy rains dig channels into the hillsides, dragging down loose soil, and forming sudden, destructive floods. Thus, the clearing of forests, the absence of permanent springs, and torrents are three closely connected phenomena. Countries in different hemispheres like Lombardy bordered by the Alps, and Lower Peru between the Pacific and the Andes, confirm this assertion.

When we stepped into the streets of Santa Cruz the heat was suffocating, though the thermometer recorded only 25°C. After breathing sea air for such a long time one suffers on land, not because the air contains more oxygen at sea but because it is less charged with the gases emanating from rotting animal and vegetable substances.

If America does not occupy an important place in the history of mankind, and in the revolutions that have shattered the world, it does offer a wide field for a naturalist. Nowhere else does nature so vividly suggest general ideas on the cause of events, and their mutual interrelationships. I do not mean by this solely the overpowering vegetation and freshness of organic life, the different climates we experience as we climb the cordilleras and navigate those immense rivers, but also the geology and natural history of an unknown continent. A traveler can count himself lucky if he has taken advantage of his travels by adding new facts to the mass of those previously discovered!

The Indians who go harvesting take thousands of dried or lightly cooked eggs away to their villages. Our towers always had some in baskets or cotton bags. When they are well preserved the taste is not too bad. They showed us large turtle shells emptied by jaguars, who wait for the turtles on the beach where the eggs are laid. They attack them on the sand. To eat them they turn them upside down so that the undershell is right-side up. In this position the turtles cannot right themselves, and as jaguars turn many more over than they can eat in one night the Indians avail themselves of the cats' greed and cunning. If you think how hard it is for a travelling naturalist to pull the turtle's body out without separating it from the cuirass of the shell you can only admire the litheness of the jaguar's paw as it empties the two-sided shield of the arrau as if the muscular ligaments had been severed by a surgeon. The jaguar chases turtles into the water, even digs up the eggs, and, along with the crocodile, heron and gallinazo vulture, is one of the cruellest enemies of the newborn turtles. When the first rains come called 'turtle rains' (peje canepori) - the wild Indians go along the Orinoco banks with their poisoned arrows and kill the turtles as they warm themselves in the sun.