“Well, that’s the best joke,” Kenneth said to himself, and he stopped rowing to pat the pocket where he had dropped the knife.

September 14th broke bright and clear, with a touch of the keen autumnal vigor in the air. A good strong breeze was blowing, and the boys weighed anchor with light hearts, for they were beginning the last fifteen hundred miles of their seven-thousand mile journey. On, up the Hudson River, the good yacht sped, the smooth green lawns of Riverside Park on one side, and the frowning cliffs of Jersey Heights upon the other. Soon the dome of Grant’s Tomb was passed, dazzling white and gleaming in the morning sun.

Hour after hour the little boat sailed up the majestic stream, a mere moving mote on the broad watery ribbon. To the east, the land sloped gently to the stream, an undulating green country dotted here and there with towns and clumps of factory buildings. On the western shore, the giant Palisades stood bluff and impressive, a solid stone wall from two hundred to five hundred feet high and fifteen miles long.

The boys speedily became mere animated exclamation points, for hardly a minute passed that did not disclose some new beauty, some unexpected vista.

The breeze held fair all day, and the night being clear, the young navigators sailed on till long after sundown. The close attention and long day’s sail made captain and crew very tired, so that when they turned in rather late they slept like logs.

At seven o’clock next morning all aboard were as thoroughly at home in the land of Nod as if they intended to spend the rest of their days there. Old Sol was shining brightly over the eastern hills, the summer breeze had not gained its full strength and made but a ripple on the smooth surface of the river. It was a quiet, peaceful scene that had not a suggestion of noise or turmoil of any kind.

Of a sudden there was a tremendous report, an explosion that rent the air, then in quick succession, like a veritable bombardment, numerous detonations followed. The first fairly shook the boys out of their snug bunks, and they tumbled out on deck wide-eyed, fearing they knew not what. The air was filled with a tremendous roar that echoed and reëchoed across from one height to the other.

“Good Heavens!” Frank exclaimed when he turned to the west. “We’re done, sure.”

The whole side of the cliff seemed to be coming down on them. Blast after blast went off, each seeming louder than the preceding one, and with each report the earth shook, and fountains of dust, smoke, and bits of rock flew up.

All three boys stood dazed, amazed, almost unnerved, indeed, until they realized that the rock was being blasted out of the cliff for paving purposes.