Even when nature does not produce the same species in analogous climates, either in the plains of isothermal parallels or on tablelands whose temperature resembles that of places nearer the poles, (73) we still noticed a striking resemblance of appearance and physiognomy in the vegetation of the most distant countries. This phenomenon is one of the most curious in the history of organic forms. I say history, for reason cannot stop man forming hypotheses on the origin of things; he will always puzzle himself with insoluble problems relating to the distribution of beings.

The position of San Fernando on a great navigable river, near the mouth of another river that crosses the whole province of Varinas, is extremely useful for trade. All that is produced in this province, the leathers, cocoa, cotton and top-quality Mijagual indigo, is washed down past this town to the Orinoco mouth. During the rainy season big ships come upstream from Angostura to San Fernando de Apure and along the Santo Domingo river as far as Torunos, the harbor for the town of Barinas. During this season the flooded rivers form a labyrinth of waterways between the Apure, Arauca, Capanaparo and Sinaruco rivers, covering a country of roughly 400 square leagues. At this point the Orinoco, deviating from its course, due not to neighboring mountains but to the rising counter-slopes, turns east instead of following its ancient path in the line of the meridian. If you consider the surface of the earth as a polyhedron formed of variously inclined planes you will see by simply consulting a map that between San Fernando de Apure, Caycara and the mouth of the Meta the intersection of three slopes, higher in the north, west and south, must have caused a considerable depression. In this basin the savannahs can be covered by 12 to 14 feet of water and turned into a great lake after the rains. Villages and farms look as though they are on shoals, rising barely 2 to 3 feet above the water surface. The flooding of the Apure, Meta and Orinoco rivers is also periodic. In the rainy season horses that roam the savannah do not have time to reach the plateaux and they drown in their hundreds. You see mares followed by foals, barely sticking up out of the water, swimming part of the day to eat grass. While swimming they are chased by crocodiles, and some carry crocodile tooth marks on their hides. Horse, mule and cow carcasses attract numberless vultures.

Having outlined the general aim, I will now briefly glance at the collections and observations we made. The maritime war during our stay in America made communications with Europe very uncertain and, in order for us to avoid losses, forced us to make three different collections. The first we sent to Spain and France, the second to the United States and England, and the third, the most considerable, remained constantly with us. Towards the end of our journey this last collection formed forty-two boxes containing a herbal of 6, equinoctial plants, seeds, shells and insects, and geological specimens from Chimborazo, New Granada and the banks of the Amazon, never seen in Europe before. After our journey up the Orinoco, we left a part of this collection in Cuba in order to pick it up on our return from Peru and Mexico. The rest followed us for five years along the Andes chain, across New Spain, from the Pacific shores to the West Indian seas. The carrying of these objects, and the minute care they required, created unbelievable difficulties, quite unknown in the wildest parts of Europe. Our progress was often held up by having to drag after us for five and six months at a time from twelve to twenty loaded mules, change these mules every eight to ten days, and oversee the Indians employed on these caravans. Often, to add new geological specimens to our collections, we had to throw away others collected long before. Such sacrifices were no less painful than what we lost through accidents. We learned too late that the warm humidity and the frequent falls of our mules prevented us from preserving our hastily prepared animal skins and the fish and reptiles in alcohol. I note these banal details to show that we had no means of bringing back many of the objects of zoological and comparative anatomical interest whose descriptions and drawings we have published. Despite these obstacles, and the expenses entailed, I was pleased that I had decided before leaving to send duplicates of all we had collected to Europe. It is worth repeating that in seas infested with pirates a traveler can only be sure of what he takes with him. Only a few duplicates that we sent from America were saved, most fell into the hands of people ignorant of the sciences. When a ship is held in a foreign port, boxes containing dried plants or stones are merely forgotten, and not sent on as indicated to scientific men. Our geological collections taken in the Pacific had a happier fate. We are for their safety to the generous work of Sir Joseph Banks, President of the Royal Society of London, who, in the middle of Europe's political turmoils, has struggled ceaselessly to consolidate the ties that unite scientific men of all nations.