"Who do you think it was?" asked Harry.
"Oh, some tramps," said Bert. "It couldn't be anybody else."
They went ashore after breakfast, close to the waterfall.
"Papa, you said you would show us where we could walk under the water without getting wet," Nan reminded him.
"Oh, yes," said Mr. Bobbsey. "I have never been to these falls, but I have read about them." Then he showed the children a place, near the shore of the lake, where they could slip in right behind the thin veil of water that fell over the black rocks, high above their heads. Back of the falling water there was a space which the waves had worn in the stone. It was damp, but not enough to wet their feet. There they stood, behind the sheet of water, and looked out through it to the lake, into which it fell with a great splashing and foaming.
"Oh, isn't this wonderful!" cried Nan.
"It surely is," said Dorothy, with a sigh. "I never saw anything so pretty."
"And what queer stones!" cried Bert, as he picked up some that had been worn into odd shapes by the action of the water.
The Bobbseys spent some little time at the waterfall, and then, as there was a pretty little island near it, where picnic parties often went for the day, they went there in the Bluebird, going ashore for their dinner.
"But I'm not going to play Robinson Crusoe again," said Freddie, as he remembered the time he had been caught in the cave.