"It shall be done at once." Mr. Penton gave the order and the mine captain left them at the next landing to telephone to the company's hospital. After a long struggle they reached the level where the pump station was located. Even here Bob Jarvis refused to give up his burden. He staggered down the level to where the big pumps were working, tenderly laying Steve down on a blanket that the engineer had thrown down. Then Bob settled down in a heap. Illustration: Bob Staggered Up the Ladder With His Burden. "Strip the boy," commanded Mr. Penton. "If you have any warm blankets here, wrap him in them. If not, use some of your waste. You have barrels of that on hand." Steve's wet, clinging clothes were quickly removed. There being no other blankets, waste used for wiping the engines was wrapped about him, the rubbing process having been resumed. Nearly an hour elapsed before the surgeon, red of face, puffing from his exertions, came hurrying down the level. He was quickly made acquainted with the situation and got to work at once. "Do you think his condition is serious?" demanded the superintendent. "No, not unless pneumonia sets in. That is the great danger, and he will be lucky if he escapes it. Is there any chance of getting him up to-night?" "I can't say. I am going on up as soon as I hear something definite from you regarding the boy's condition." "I shall be able to give that to you very soon, for his circulation has already started." The color was returning to the lad's lips and cheeks, and his breath was coming more regularly. Half an hour from that time Steve had fully recovered his senses and announced himself as ready to get up and dress. The surgeon advised him not to do so, finally ordering the patient to remain as he was. Rush accepted the order with poor grace. His clothing was being dried out by the pump engineer, the garments being ready very shortly afterwards. Jarvis had wholly recovered from the strain that he had been under, except that he was still a little weak in the knees. "We owe our lives to your friend Jarvis," said Mr. Penton, after Steve had been made as comfortable as possible. "But what I wish to know is how you happened to get into the lower level. Did you fall while sounding with the line?" Rush hesitated, then glancing up at the superintendent, replied: "No, sir; I did not fall." "I don't understand." "I was pushed in, Mr. Penton." "You don't mean that--surely you cannot mean that, Rush!" exclaimed Mr. Penton in amazement. "Yes, sir; I was." "Who pushed you?" "That is what I should like to know." "This is really incredible, Rush. Are you quite sure you are not mistaken?" "I am not mistaken." "Tell me about it." "When you sent for me----" "I did not send for you. That was a mistake. And that is what puzzles me. I am told you thought you received a message from me to meet you on the sub-level above the lowest level." "Yes, sir; that was the message I received."