“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.

But the examination ended only in discouragement. Smooth almost as glass the walls were, and the floor as well, perhaps worn down by countless prisoners.

The iron door, cleverly let into the wall, lay flush with it, and offered not the slightest irregularity to the touch. So nicely was it fitted that not even Stern's finger-nail could penetrate the joint.

“Nothing doing in the escape line,” he passed judgment unwillingly. “Barbarians these people certainly are, in some ways, but they've got the arts of stone and iron working down fine. I, as an engineer, have to appreciate that, and give the remote descendants of our race credit for it, even if it works our ruin. Gad, but they're clever, though!”

Discouraged, in spite of all his attempted optimism, he sought the girl again, there in the deep and velvet dark. To himself he drew her; and, his arm about her sinuous, supple body, tried to comfort her with cheering speech.

“Well, Beatrice, they haven't got us yet! We're better off, on the whole, than we had any right to hope for, after having fallen one or two hundred miles--maybe five hundred, who knows? If I can manage to get a word or two with these confounded barbarians, I'll maybe save our bacon yet! And, at worst--well, we're in a mighty good little fort here. I pity anybody that tries to come in that door and get us.”