Having prepared our boats, and put in provision for four days, with twenty men well armed, we entered the river, and rowed nearly two days, making a distance of about eighteen leagues. We attempted to land in many places by the way, but found the low land still continuing, and so thickly covered with trees that a bird could scarcely fly through them. While thus navigating the river, we saw very certain indications that the inland parts of the country were inhabited; nevertheless, as our vessels remained in a dangerous place in case an adverse wind should arise, we concluded, at the end of two days, to return.
Here we saw an immense number of birds, of various forms and colors; a great number of parrots, and so many varieties of them that it caused us great astonishment. Some were crimson-colored, others of variegated green and lemon, others entirely green, and others, again, that were black and flesh-colored. Oh! the song of other species of birds, also, was so sweet and so melodious, as we heard it among the trees, that we often lingered, listening to their charming music. The trees, too, were so beautiful and smelled so sweetly that we almost imagined ourselves in a terrestrial paradise; yet not one of those trees, or the fruit of them, was similar to the trees or fruit in our part of the world. On our way back we saw many people, of various descriptions, fishing in the river.
Having arrived at our ships, we raised anchor and set sail, still continuing in a southerly direction, and standing off to sea about forty leagues. While sailing on this course, we encountered a current which ran from southeast to northwest; so great was it, and ran so furiously, that we were put into great fear, and were exposed to great peril. The current was so strong that the Strait of Gibraltar and that of the Faro of Messina appeared to us like mere stagnant water in comparison with it. We could scarcely make any headway against it, though we had the wind fresh and fair. Seeing that we made no progress, or but very little, and the danger to which we were exposed, we determined to turn our prows to the northwest.
As I know, if I remember right, that your excellency understands something of cosmography, I intend to describe to you our progress in our navigation, by the latitude and longitude. We sailed so far to the south that we entered the torrid zone and penetrated the circle of Cancer. You may rest assured that for a few days, while sailing through the torrid zone, we saw four shadows of the sun, as the sun appeared in the zenith to us at midday. I would say that the sun, being in our meridian, gave us no shadow; but this I was enabled many times to demonstrate to all the company, and took their testimony of the fact. This I did on account of the ignorance of the common people, who do not know that the sun moves through its circle of the zodiac. At one time I saw our shadow to the south, at another to the north, at another to the west, and at another to the east, and sometimes, for an hour or two of the day, we had no shadow at all.