"Now, Thompson, not too loud, there's no occasion for it; two of us can work."

Thompson commenced his song; Newton took a small saw from Collins, who directed him how to use it. The iron bars of the prison yielded like wood to the fine-tempered instruments which Collins employed. In an hour and a half three of the bars were removed without noise, and the aperture was wide enough for their escape. The singing of Thompson, whose voice was tolerably good, and ear very correct, had not only the effect of preventing their working being heard, but amused the sentinel, who remained with his back to the wall listening to the melody.

Their work was so far accomplished. Thompson ceased, and all was silence and anxiety; in a few minutes the sentinel was again heard in conversation, and the voices receded, as if he had removed to a greater distance.

"Now, brother," said the low voice under the aperture.

In a minute the whole of the prisoners were clear of the walls, and followed their guide in silence, until they reached the landing-place.

"There is the boat, and provisions sufficient," said the freemason, in a low tone; "you will have to pass the sentries on the rocks: but we can do no more for you. Farewell, brother; and may you and your companions be fortunate!" So saying, their friendly assistant disappeared.

The night was so dark, that although close to the boat, it was with difficulty that its outlines could be discerned. Newton, recommending the strictest silence and care in entering, stepped into it, and was followed by the rest. Roberts, whose eyesight was a little affected from the wounds in his head, stumbled over one of the oars.

"Qui vive?" cried out one of the sentries on the rock.

No answer was made; they all remained motionless in their seats. The sentry walked to the edge of the rock and looked down; but not distinguishing anything, and hearing no further noise, returned to his post.

For some little while Newton would not allow them to move: the oars were then carefully lifted over the gunnel, and their clothes laid in the rowlocks, to muffle the sound; the boat was pushed from the landing-place into the middle of the narrow inlet. The tide was ebbing, and with their oars raised out of the water, ready to give way if perceived, they allowed the boat to drift out of one of the narrow channels which formed the entrance of the harbour.