"I guess the rocket and the red fire got them!" grinned Frank.
"Yes, but they won't stay scared forever!" Harry put in. "We'd better be getting out of this before they come back to their senses."
"They never had any senses!" claimed Jack.
Looking out from the interior, now guarded only by the panels at the front and sides, the boys saw Ned drop half a dozen sticks of dynamite on the logs and brush which had been floated down on top of a number of canoes. In some places the logs had pushed up until they were high above the surface of the water.
The pressure of the current was continually making the obstruction more compact. The canoes seemed to have been bound firmly together and stretched from shore to shore. At least the moorings were strong, for the logs were heavy and the current pulled heavily at them.
The explosions made great havoc with the barricade, and presently the line was broken and the whole mass swung shoreward or drifted down stream.
Then Ned called out:
"Now drop down stream and I will join you."
"Better look out where you land!" Harry called back.
"I hope I won't get into any such scrape as you did," Ned replied.