The pink, in its turn, faded, and the whole surface of the river was somber gray, flowing between two lines of black forest.
The coming of the darkness did not stop the boy.

He swung a little farther out into the stream, where the bushes and hanging boughs would not get in his way, and continued his course with some increase of speed.
The great paddle swung swiftly through the water, and the length of stroke was amazing, but the boy's breath did not come faster, and the muscles on his arms and shoulders rippled as if it were the play of a child.

Henry was in waters unknown to him.

He had nothing more than hearsay upon which to rely, and he used all the wilderness caution that he had acquired through nature and training.

He called into use every faculty of his perfect physical being.