"We've seen the uselessness of asking help from outside.

Let's supply our own help.

Now, then--altogether! Shoulder the door!" A savage assault they hurled upon the door.

But they merely caused it to vibrate.
"We can't do it," gasped Dan, after the third trial.
Considerable daylight filtered in through the cracks at top, bottom and one side of the door.

Further back in the shed there was less light.
"Let's explore this old place in search of hope," begged Dave.
Together they started back, looking about keenly in what appeared to be an empty room.
"Say! Look at that!" cried Dave suddenly.
He pointed to a solid looking, not very heavy ship's spar.
"What good will that thing do us ?" asked Farley rather dubiously.
"Let's see if we can raise it to our shoulders," proposed Dave Darrin radiantly.