There it was that the jangada was to be built; thence it was that the Amazon was to float it when the time came for it to start for its destination.

And here an explanatory note is necessary in regard to the geography of this immense body of water, and more especially as relating to a singular phenomenon which the riverside inhabitants describe from personal observation.

The two rivers which are, perhaps, more extensive than the great artery of Brazil, the Nile and the Missouri-Mississippi, flow one from south to north across the African continent, the other from north to south through North America. They cross districts of many different latitudes, and consequently of many different climates.

The Amazon, on the contrary, is entirely comprised--at least it is from the point where it turns to the east, on the frontiers of Ecuador and Peru--between the second and fourth parallels of south latitude. Hence this immense river system is under the same climatic conditions during the whole of its course.