The canoes used by the Eskimos who inhabit the Polar Regions are made of a light framework of wood, which is covered entirely over with seal-skin--a round hole being left in the centre, in which the Eskimo sits. Round this hole there is a loose piece of skin, which is drawn up by the man and fastened round his waist. The machine is thus completely water-tight. No waves can dash into, although they can sweep over it; and if by chance it should upset, the Eskimo can turn it and himself up into the proper position by one dexterous sweep of his long, double-bladed paddle. The paddle, which varies from ten to fifteen feet, is simply a pole with a blade at each end. It is grasped in the centre, and each end dipped alternately on either side of the _kayak_, as this canoe is called. Eskimo kayaks are first-rate sea-boats. They can face almost any sort of weather. They are extremely light, and are propelled by the natives very swiftly. In these frail canoes the natives of the Polar Regions pursue seals and whales, and even venture to attack the walrus in his native element. The kayak is used exclusively by the men. The oomiak, or women's canoe, is of much larger and clumsier construction, somewhat like a boat. It is open above, and can hold a large family of women and children. Like the kayak, it is a framework of wood covered with seal-skin, and is propelled by means of short paddles of the spoon form. The famous "Rob Roy" canoe, which is now so much in vogue among boys and young men of aquatic tendency, is constructed and managed on precisely the same principles with the Eskimo kayak; the only difference between the two being that the "Rob Roy" canoe is made of thin wood instead of skin, and is altogether a more elegant vessel. An account of it will be found in our chapter on "Boats." The South Sea islanders also use a canoe which they propel with a double-bladed paddle similar to that of the Eskimos. They are wonderfully expert and fearless in the management of this canoe, as may be seen from the annexed woodcut. In order to show that the paddle of the canoe is more natural to man than the oar, we present a picture of the canoe used by the Indians of the Amazon in South America. Here we see thar the savages of the south, like their brethren of the north, sit with their faces to the bow and urge their bark forward by neans of short paddles, without using the gunwale as a fulcrum. The oar is decidedly a more modern and a more scientific instrument than the paddle, but the latter is better suited to some kinds of navigation than the former.