"Good-bye!" muttered Donald. "Sorry I can't wait to receive you," and he followed the lieutenant.
On the ground they could hear the men trying to open the door and as they sped across the lawn toward a high brick wall, the door gave way with a crash and they could hear surprised voices.
"They have discovered our wreckage!" cried Donald. "Over the wall you go!"
"You first this time," said the lieutenant.
"No, you first. I can boost you up, but I couldn't pull you. You can pull me."
The argument was good and the lieutenant acted upon it.
A minute later he was on top of the wall.
"Great Cæsar!" he exclaimed. "There's nothing under me but water."
"Never mind that," was the response. "Haul me up."
The lieutenant leaned down and gave the lad a hand.