The Orinoco, at nearly forty leagues from the sea, forms, like the Nile, a kind of fan, strewed over with a multitude of little islands, that divide it into numerous branches and channels, and force it to discharge itself through this labyrinth into the sea by an infinity of mouths, occupying an extent of more than sixty leagues. "The Indians who inhabit those islands," says Raleigh, "in the summer, have houses upon the ground, as in other places; in the winter they dwell upon the trees, where they build very artificial towns and villages: for, between May and September, the river rises to thirty feet upright, and then are those islands overflowed twenty feet high above the level of the ground; and for this cause they are enforced to live in this manner. They use the tops of palmitos for bread; and kill deer, fish, and porks for the rest of their sustenance." Raleigh's account is confirmed by later travellers. Humboldt says, "The navigator, in proceeding along the channels of the delta of the Orinoco at night, sees with surprise the summits of the palm-trees illuminated by large fires. These are the habitations of the Guaraons, which are suspended from the trees. These tribes hang up mats in the air, which they fill with earth, and kindle, on a layer of moist clay, the fire necessary for their household wants." Passing up with the flood, and anchoring during the ebb, Raleigh and his companions went on, till on the third day their galley grounded, and stuck so fast, that they feared their discovery must end there, and they be left to inhabit, like rooks upon trees, with these nations; but on the morrow, after casting out all her ballast, with tugging and hauling to and fro, they got her afloat. After four days more, they got beyond the influence of the tide, and were forced to row against a violent current, till they began to despair; the weather being excessively hot, and the river bordered with high trees, that kept away the air. Their provisions began to fail them; but some relief they found by shooting birds of all colors,--carnation, crimson, orange, purple, and of all other sorts, both simple and mixed. An old Indian whom they had pressed into their service was a faithful guide to them, and brought them to an Indian village, where they got a supply of bread, fish, and fowl. They were thus encouraged to persevere, and next day captured two canoes laden with bread, "and divers baskets of roots, which were excellent meat." Probably these roots were no other than potatoes; for the mountains of Quito, to which Sir Walter was now approaching, were the native country of the potato, and the region from whence it was first introduced into Europe. The Spaniards and Portuguese introduced it earlier than the English; but to Raleigh belongs the credit of making it known to his countrymen. The story is, that Sir Walter, on his return home, had some of the roots planted in his garden at Youghal, in