The weather was magnificent. A pleasant “pampero” tempered the ardor of the sun—one of those winds which in June or July come from off the Cordilleras, many hundred leagues away, after having swept across the huge plain of the Sacramento. Had the raft been provided with masts and sails she would have felt the effects of the breeze, and her speed would have been greater; but owing to the sinuosities of the river and its abrupt changes, which they were bound to follow, they had had to renounce such assistance.
In a flat district like that through which the Amazon flows, which is almost a boundless plain, the gradient of the river bed is scarcely perceptible. It has been calculated that between Tabatinga on the Brazilian frontier, and the source of this huge body of water, the difference of level does not exceed a decimeter in each league. There is no other river in the world whose inclination is so slight.
It follows from this that the average speed of the current cannot be estimated at more than two leagues in twenty-four hours, and sometimes, while the droughts are on, it is even less. However, during the period of the floods it has been known to increase to between thirty and forty kilometers.
Happily, it was under these latter conditions that the jangada was to proceed; but, cumbrous in its movements, it could not keep up to the speed of the current which ran past it. There are also to be taken into account the stoppages occasioned by the bends in the river, the numerous islands which had to be rounded, the shoals which had to be avoided, and the hours of halting, which were necessarily lost when the night was too dark to advance securely, so that we cannot allow more than twenty-five kilometers for each twenty-four hours.
In addition, the surface of the water is far from being completely clear. Trees still green, vegetable remains, islets of plants constantly torn from the banks, formed quite a flotilla of fragments carried on by the currents, and were so many obstacles to speedy navigation.
The mouth of the Nanay was soon passed, and lost to sight behind a point on the left bank, which, with its carpet of russet grasses tinted by the sun, formed a ruddy relief to the green forests on the horizon.
The jangada took the center of the stream between the numerous picturesque islands, of which there are a dozen between Iquitos and Pucalppa.
Araujo, who did not forget to clear his vision and his memory by an occasional application to his demijohn, maneuvered very ably when passing through this archipelago. At his word of command fifty poles from each side of the raft were raised in the air, and struck the water with an automatic movement very curious to behold.
While this was going on, Yaquita, aided by Lina and Cybele, was getting everything in order, and the Indian cooks were preparing the breakfast.
As for the two young fellows and Minha, they were walking up and down in company with Padre Passanha, and from time to time the lady stopped and watered the plants which were placed about the base of the dwelling-house.