Without staying long enough on this friendly coast to undeceive the simple people, Ruiz, standing off shore, struck out into the deep sea; but he had not sailed far in that direction, when he was surprised by the sight of a vessel, seeming in the distance like a caravel of considerable size, traversed by a large sail that carried it sluggishly over the waters. The old navigator was not a little perplexed by this phenomenon, as he was confident no European bark could have been before him in these latitudes, and no Indian nation, yet discovered, not even the civilized Mexican, was acquainted with the use of sails in navigation. As he drew near, he found it was a large vessel, or rather raft, called balsa by the natives, consisting of a number of huge timbers of a light, porous wood, tightly lashed together, with a frail flooring of reeds raised on them by way of deck. Two masts or sturdy poles, erected in the middle of the vessel, sustained a large square-sail of cotton, while a rude kind of rudder and a movable keel, made of plank inserted between the logs, enabled the mariner to give a direction to the floating fabric, which held on its course without the aid of oar or paddle.13 The simple architecture of this craft was sufficient for the purposes of the natives, and indeed has continued to answer them to the present day; for the balsa, surmounted by small thatched huts or cabins, still supplies the most commodious means for the transportation of passengers and luggage on the streams and along the shores of this part of the South American continent.