He then took the candle and passed it back and forth before the window five or six times.
“What are you doing?” inquired the baron, in suspense.
“I am signalling to your friends that everything is progressing favorably. They are down there waiting for us; and see, now they are answering.”
The baron looked, and three times they saw a little flash of flame like that produced by the burning of a pinch of gunpowder.
“Now,” said the corporal, “we are all right. Let us see what progress you have made with the bars.”
“I have scarcely begun,” murmured M. d’Escorval.
The corporal inspected the work.
“You may indeed say that you have made no progress,” said he; “but, never mind, I have been a locksmith, and I know how to handle a file.”
Having drawn the cork from the vial of brandy which he had brought, he fastened the stopper to the end of one of the files, and swathed the handle of the instrument with a piece of damp linen.
“That is what they call putting a stop on the instrument,” he remarked, by way of explanation.