Arthur was allowed to assist in fitting the anchor tubes, and also in making the shell ready to be filled with its deadly explosive. When the cans of nitro-glycerine were brought into the derrick, all the men employed about the place retired to a respectful distance from it. Then Brace insisted that Arthur should also go away, and leave him alone to finish the delicate and dangerous job of loading the shell, lowering it into position, and exploding it.

The boy begged to be allowed to stay, declaring that he was not in the least afraid, and would keep as still as a mouse. But Brace would not listen for a moment to his pleadings, and very slowly the little fellow walked away to what he considered a safe distance, though it was not nearly so far as the men had gone.

At this time the empty shell, which was a large tin tube about twenty feet long, was, with its anchor attached, hanging in the well so that its upper end was just above the surface. It hung from a very shallow iron hook, at the end of the stout cord arranged for the purpose; and Brace Barlow now proceeded slowly and cautiously to pour the nitro-glycerine into it. The stuff was the color of soft soap, and about as thick as syrup.

He had been thus engaged but a few minutes, when Arthur, who was nearer to him than anybody else, heard him call, “Come here, quick, somebody, and help me!”

Without a moment’s hesitation or thought of fear, the brave little fellow ran swiftly to the derrick, exclaiming, as he reached it, “Here I am, Brace! What do you want?”

“You here, you dear little chap!” cried the torpedo man, “I didn’t mean that you should come; but perhaps after all you will do better than another, and I must have help at once. You see the hook has slipped off the shell, and I only caught the torpedo in time to save it from dropping and exploding before I was ready. Then the weight of the cord pulled the hook up so that I can’t reach it. Now if you can climb up the side of the derrick, holding the drill rope in close to you till you reach the proper height, then swing out, catch hold of that hook, and slide down the drill rope with it in your hand, you will do what I want as well as if you were the biggest man in the world. Do you think you can?”

“I can try,” replied the boy, who took in the whole situation at a glance, and he at once began to climb the ladder that led to the top of the tall derrick.

It seemed that while Brace was filling the torpedo, and had nearly completed his task, he found it necessary to shift the position of the shell slightly. As he lifted it, the shallow hook slipped from the bail, or handle of stout copper wire, and flew up just beyond his reach. To let go of the torpedo was out of the question, for it would have fallen down the well and probably exploded from concussion with the iron tubing lining the hole before it had gone many feet. This explosion would have fired the quart or more of glycerine still remaining in one of the cans on the derrick floor, and Brace Barlow would instantly have disappeared from human view. The weight of the torpedo was so great that he could not support it very long; and so, unless assistance came to him promptly when he called, he must have let the thing drop, and suffered the consequences.

But help had come promptly; and a twelve-year-old boy, forgetting all thoughts of danger, and urged on by the love he bore his friend, was climbing the derrick, swinging out into space on the heavy drill rope, clutching the dangling iron hook, and sliding down with it in his hand. Then, instead of timidly reaching it to Brace, he stepped boldly up and attached it to the copper bail of the torpedo that was cutting deep into the flesh of the strong hand that held it, and must in another minute have let it go.

As the well-shooter, with a pale face, rose from his strained position, he clasped the boy in his arms, exclaiming: “Little one, you have done for me this day what any man might be proud of doing for a friend; and, so long as I live, I will never forget the service nor cease to be indebted to you.”