"Better yell and see."
"Boat, ahoy!"
No answer came back, and for the moment the lights appeared to fade from sight.
"Must have been on shore and we are passing them, Baxter."
"More than likely, and yet—There they are again!"
Dan Baxter was right; the lights had reappeared and now they seemed to approach the houseboat with alarming rapidity.
"They'll run into us if they are not careful," said Flapp, in fresh alarm. "Boat, ahoy!" he screamed. "Keep off!"
"Keep off! Keep off, there!" put in Dan Baxter.
If those in the other craft heard, they paid no attention. The light came closer and closer and of a sudden a fair-sized gasolene launch came into view. She was headed directly for the Dora, and a moment later hit the houseboat a telling blow in the side, causing her to careen several feet.