Cap grunted.

And it was a grunt that indicated relief and satisfaction.

Although endangered, the articles concerning which he was solicitous had not been injured.

Once more he took his departure, and again Shadow made good use of his time.

The change which Cap had made permitted the better ingress of air into Shadow's prison-pen, and he could now breathe more easily.

Not a few times was he compelled to pause by the coming of some of the gang, and it required hours of careful labor before he had assured himself of having found a safe means of exit from his narrow cell.

But he did not take immediate advantage of this means of escape.

It would not have been in accordance with his plans.

Once having emerged he would have been compelled to walk some distance in open sight, by a much used path, to reach the stairs descending to the vaults beneath.

It was all he could hope for, could he once traverse the distance without being observed.