Giving himself a wrench, the boy managed to move forward a little, turned over, and then worked himself so that he placed his bandaged wrists close to his comrade’s mouth, and then lay perfectly still, for the sentry turned suddenly as if he had heard the movement.

Apparently satisfied, though, that all was well, he changed his position again, and then, to the great satisfaction of the two prisoners, he shouldered his musket and began to pace up and down, coming and going, and halting at last at the far end of his beat.

Then, full of doubt but eager to make an effort, Pen set to work, felt for the buckle, and after several tries got hold of the strap in his teeth, tugging at it fiercely and with his heart sinking more and more at every effort, for he seemed to make no progress.

Twice over, after tremendous efforts that he half-fancied loosened his teeth, he gave up what seemed to be an impossibility; but he was roused upon each occasion by an impatient movement on the part of Punch.

“It’s of no use,” he thought. “I am only punishing myself more and more;” and, fixing his teeth firmly once more in the leather, he gave one shake and tug such as a wild beast might have done in worrying an enemy. With one final drag he jerked his head back and lay still with his jaws throbbing and the sensation upon him that he had injured himself so that several of his teeth had given way.

“It’s no good. It’s of no use, Punch,” he said to himself; for the boy shook his wrists sharply as if to urge him to begin again. “I can’t do it, and I won’t try;” when to his astonishment he felt that his comrade was moving and had forced himself back with a low, dull, rustling sound so that he could place his lips to his ear again; and to Pen’s surprise the boy whispered, “That last did it, and I got the strap quite loose. My! How my wrists do ache! Just wait a bit, and then I will pull you over on to your face and have a turn at yours.”

Pen felt too much confused to believe that his companion had succeeded, but he lay perfectly still, with his teeth still aching violently, till all at once he felt Punch’s hands busy about him, and he was jerked over upon his face.

Then he felt that the boy had raised himself up a little as if to take an observation of their surroundings before busying himself with the straps that bound his numbed wrists.

“Lie still,” was whispered, “don’t flinch; but I have got my knife out, and I am going to shove it under the strap. Don’t holloa if it hurts.”