“All right,” he said. “You can haul me up, but go very slowly at first.”

The car rose. When it reached the orifice in the top of the cave of light, Clewe heard the conical steel top grate slightly as it touched its edge, for it was still swinging a little from the motion given to it by his entrance; but it soon hung perfectly vertical and went silently up the shaft.

[ [!-- H2 anchor --] ]

CHAPTER XXII. CLEWE'S THEORY

Seated in the car, which was steadily ascending the great shaft, Roland Clewe took no notice of anything about him. He did not look at the brilliantly lighted interior of the shaft, he paid no attention to his instruments, he did not consult his watch, nor glance at the dial which indicated the distance he had travelled. Several times the telephone bell rang, and Bryce inquired how he was getting along; but these questions he answered as briefly as possible, and sat looking down at his knees and seeing nothing.

When he was half-way up, he suddenly became conscious that he was very hungry. He hurriedly ate some sandwiches and drank some water, and then, again, he gave himself up entirely to mental labor. When, at last, the noise of machinery above him and the sound of voices aroused him from his abstraction, the car emerged upon the surface of the earth, Clewe hastily slid back the door and stepped out. At that instant he felt himself encircled by a pair of arms. Bryce was near by, and there were other men by the engines, but the owner of those arms thought nothing of this.

“Margaret!” cried Clewe, “how came you here?”

“I have been here all the time,” she exclaimed; “or, at least, nearly all the time.” And as she spoke she drew back and looked at him, her eyes full of happy tears. “Mr. Bryce telegraphed to me the instant he knew you were going down, and I was here before you had descended half-way.”

“What!” he cried. “And all those messages came from you?”

“Nearly all,” she answered. “But tell me, Roland—tell me; have you been successful? What have you discovered?”