They parted the bushes on the bank and peered out over the water. The little steam ferry-boat was about a mile below the village, drifting with the current. Her broad deck seemed crowded with people. There were a great many skiffs rowing about or floating with the stream in the neighborhood of the ferryboat, but the boys could not determine what the men in them were doing. Presently a great jet of white smoke burst from the ferryboat’s side, and as it expanded and rose in a lazy cloud, that same dull throb of sound was borne to the listeners again.

“I know now!” exclaimed Tom; “somebody’s drownded!”

“That’s it!” said Huck; “they done that last summer, when Bill Turner got drownded; they shoot a cannon over the water, and that makes him come up to the top.