The boy told him that a stone would do very well for a hammer.

"So it will," said Marco; "find me a good one, and bring it to this old fence."

The boy brought Marco a stone, and Marco began to knock out the nails. Very soon, however, he set the boy at work upon the nails, while he went in pursuit of some short boards, to nail across from one log to the other. He found some, which he thought would answer, without much difficulty, and collected them together near the logs; and, soon afterwards, the boy brought him the nails.

The logs were lying side by side, with two ends resting upon the shore, the two other ends being out towards the stream. Marco concluded to nail first the two ends which were towards the shore, they being nearest, and being also more steady than the others. He accordingly laid one of his short pieces across, and nailed it as well as he could, using the stone for a hammer.

"Now," said he to the boy, "I'll put another board across at the middle, and one more at the other end, and then, if I can find something for a pole, I'll take a little sail. Look about a little, my boy, won't you," continued he, "and see if you can't find a pole, while I am nailing the other boards."

The boy accordingly went away in pursuit of a pole, while Marco nailed first the middle board, and then the end one. He came back just after Marco had got the first nail of the end board driven in, and as soon as he came in sight of the logs and of Marco, he exclaimed—

"You're adrift! you're adrift!"

Marco got up immediately, and looked around. He was indeed adrift. His weight, pressing upon the outer ends of the logs, had lifted the other ends off the shore, and the raft was slowly floating up the stream. The reason why it floated up was, that there was at this place what they call an eddy, which is a current near the shore, flowing up the stream. Such eddies are caused, generally, by curves in the banks.

As soon as Marco perceived that he was afloat, he said—

"Throw me the pole."