If you let the boats lay off I will look farther." "Very well; I will go with you in the Dart," replied the commodore, as he ordered up a white and a blue flag, which was the signal for the Dart to close up.
The signal was obeyed, and Frank followed the Dip.

After half an hour's search, a clear channel was found close to the land; so close that the oars could not be used, and a party was sent on shore to drag them through with ropes.
The line was formed again, and the squadron slowly followed the Dip as she examined the river.

For the next mile there were no obstructions.
"Twelve o'clock!" shouted Fred Harper from the Bluebird.
"Dinner time, then," replied Frank.

"Here is a beautiful grove, and we will land and dine.

Hoist the orange"-- the signal to land..