were travelling encircled the whole earth, and that the land was an island like those seen in the stream, but larger. Here a gleam of curiosity and imagination in the Indian mind is revealed: the necessity of a theory of the earth and water has been felt, and a theory has been suggested. In all other matters not concerning the common wants of life the mind of Vicente was a blank, and such I always found to be the case with the Indian in his natural state. Would a community of any race of men be otherwise, were they isolated for centuries in a wilderness like the Amazonian Indians, associated in small numbers wholly occupied in procuring a mere subsistence, and without a written language, or a leisured class to hand down acquired knowledge from generation to generation?
One day a smart squall gave us a good lift onward; it came with a cold, fine, driving rain, which enveloped the desolate landscape as with a mist: the forest swayed and roared with the force of the gale, and flocks of birds were driven about in alarm over the tree-tops. On another occasion a similar squall came from an unfavourable quarter: it fell upon us quite unawares when we had all our sails out to dry, and blew us broadside foremost on the shore. The vessel was fairly lifted on to the tall bushes which lined the banks, but we sustained no injury beyond the entanglement of our rigging in the branches. The days and nights usually passed in a dead calm, or with light intermittent winds from up river and consequently full against us. We landed twice a day to give ourselves and the Indians a little
