And then they met the object of their anger hurrying away from the levee which they were approaching.

"Where are you fellows going?" he cried, and then, in a lower tone, he added, "We've got to get out of here in a hurry, for they are in this very town and looking for us. I've just come from their boat."

"Who have they left aboard?" asked Grimshaw.

"Only a child," was the answer.

"Let us take a look at it, then, so we will know it as well as you the next time we see it."

So Mr. Gilder went back to point out the Whatnot to his companions, and when they sprang aboard and began to cast off the lines that held it to the levee he followed them, with a vague idea of protecting Sabella.

The next moment, Solon, who had just finished hitching up Reward, was startled by the ringing of the engine-room bell. It was the signal to go ahead. Thinking that the others must have returned and were ready to start, he obeyed it. Thus the Whatnot, in full possession of the "river-traders," moved slowly out into the stream, and again started in pursuit of the raft she had followed for so long.

CHAPTER XXVI.

A DISASTROUS COLLISION.