But such was the cruel force with which the cords had been knotted and so long had they been on the captive’s wrists that, even though his hands were now free, he had little use of them. They were numb and helpless. Like limbs “asleep” and, as Tom said afterward, they felt as big as sofa cushions.

They soon, however, began to tingle as the blood resumed its circulation, and with the sensation of pins and needles pricking his fingers, Tom began to feel that he could use his hands.

This he did in loosening the cords around his feet, and in a few minutes more he was able to stand up, free to move about and take up the matter of getting out of the cistern.

It was as dark as a pocket in there, and Tom wished he had with him a small electric flashlight. Almost always he carried one, but this time, just when it was most needed, he was without it.

“But I guess I can go by feeling,” he told himself. “This cistern isn’t so immense. It’s circular, and no matter where I start on the wall I’m bound to come to the tunnel opening some time or other. I guess it’s a mighty good thing,” grimly thought Tom, “that there’s no water in this place. No thanks to Barsky, I guess, that there isn’t. He’d have dropped me in just the same, I believe.”

Tom, with outstretched hands, began to grope his way about in the dark cistern. He knew there were no holes in the floor, so he did not fear a fall, and there was nothing with which he could collide. From the length of time it took him to reach the wall, Tom judged that he had been lying about in the center of the old water-container. This proved his theory that Barsky had lowered him into it from the trap door above.

Once Tom was in contact with the circular wall of the cistern, it was an easy matter to follow it around until he came to the tunnel opening.

“This way out!” exclaimed the young inventor grimly. “I wonder what time it is and how long I’ve been in here. Maybe they’re looking for me up above. And yet, perhaps they think I’m just off on one of my trips.”

Tom started into the black tunnel. It had been several years since it had been put to use, and the youth had not entered it during all that time. Consequently he proceeded a bit cautiously, for he did not know but what there might be holes here and there in the floor of it.

After about five minutes of careful progress Tom felt on his face a cool current of air.