"Ah!" cried she. "Here it is!"
"Good! Tell me, is the steel jacket burst in any such way as to make a jagged edge?"
A moment's silence, while her deft fingers examined the metal. Then said she: "I think so. It's a terribly small bit to saw with, but--"
"To work, then! I can't stand this much longer."
With splendid energy the girl attacked the tough and water-soaked bonds. She worked half an hour before the first one, thread by thread yielding, gave way. The second followed soon after; and now, with torn and bleeding fingers, she released the final bond.
"Thank Heaven!" he breathed as she began chafing his numb wrists and arms to bring the circulation back again; and presently, when he had regained some use of his own hands, he also rubbed his arms.
"No great damage done, after all," he judged, "so far as this is concerned. But, by the Almighty, we're in one frightful fix every other way! Hark! Hear those demons outside there? God knows what they're up to now!"
Both prisoners listened.
Even through the massive walls of the circular dungeon they could hear a dull and gruesome chant that rose, fell, died, and then resumed, seemingly in unison with the variant roaring of the flame.
Thereto, also, an irregular metallic sound, as of blows struck on iron, and now and then a shrill, high-pitched cry. The effect of these strange sounds, rendered vague and unreal by the density of the walls, and faintly penetrating the dreadful darkness, surpassed all efforts of the imagination.
Beatrice and Stern, bold as they were, hardened to rough adventurings, felt their hearts sink with bodings, and for a while they spoke no word. They sat there together on the floor of polished stone--perceptibly warm to the touch and greasy with a peculiarly repellent substance--and thought long thoughts which neither one dared voice.
But at length the engineer, now much recovered from his pain and from the oppression of the lungs caused by the compressed air, reached for the girl's hand in the dark.
"Without you where should I be?" he exclaimed. "My good angel now, as always!"
She made no answer, but returned the pressure of his hand. And for a while silence fell between them there--silence broken only by their troubled breathing and the cadenced roaring of the huge gas-well flame outside the prison wall.
At last Stern spoke.
"Let's get some better idea of this place," said he. "Maybe if we know just what we're up against we'll understand better what to do."
And slowly, cautiously, with every sense alert, he began exploring the dungeon. Floor and walls he felt of, with minute care, reaching as high as he could and eagerly seeking some possible crevice, some promise--no matter how remote--of ultimate escape.