By and by some still more clever savage tied two logs together and made the first raft. This soon taught him the second advantage of sea-power, which is, that, as a rule, you can carry goods very much better by water than land. Even now, if you want to move many big and heavy things a thousand miles you can nearly always do it ten times better in a ship than in a train, and ten times better in a train than by carts and horses on the very best of roads. Of course a raft is a poor, slow, clumsy sort of ship; no ship at all, in fact. But when rafts were the only "ships" in the world there certainly were no trains and nothing like one of our good roads. The water has always had the same advantage over the land; for as horses, trails, carts, roads, and trains began to be used on land, so canoes, boats, sailing ships, and steamers began to be used on water. Anybody can prove the truth of the rule for himself by seeing how much easier it is to paddle a hundred pounds ten miles in a canoe than to carry the same weight one mile over a portage. Presently the smarter men wanted something better than a little log raft nosing its slow way along through dead shallow water when shoved by a pole; so they put a third and longer log between the other two, with its front end sticking out and turning up a little. Then, wanting to cross waters too deep for a pole, they invented the first paddles; and so made the same sort of catamaran that you can still see on the Coromandel Coast in southern India. But savages who knew enough to take catamarans through the pounding surf also knew enough to see that a log with a hollow in the upper side of it could carry a great deal more than a log that was solid; and, seeing this, they presently began making hollows and shaping logs, till at last they had made a regular dug-out canoe. When Christopher Columbus asked the West Indian savages what they called their dug-outs they said _canoas_; so a boat dug out of a solid log had the first right to the word we now use for a canoe built up out of several different parts. [Illustration: "DUG-OUT" CANOE]