Knowing that Joe and Bill were in Mr. Wright's confidence Donovan had no hesitation about placing guards as desired, and immediately after they ascended from the slope every exit was closely watched.

"Now you boys can see we've fixed things in proper shape," Bill said, in a tone of triumph. "Do whatever you choose until to-morrow, an' Joe an' me'll attend to Mr. Billings' case."

"But he might get into the lower level by the same way we did," Sam ventured to suggest.

"There are plenty below to take care of that."

"Then there's no reason why we should come back?"

"Not unless you want to see the game played out."

"We'll run down to Fred's house, and then have a look at the place where he went through."

"Suit yourselves about that," was the careless reply, as Bill started toward the store to confer with the superintendent.

"Now is our chance," Sam whispered. "It won't take us more than ten minutes to run over to your house, and we can get back before Bill comes."

Fred started at a rapid pace, and by the time the miners had finished telling their story to Mr. Wright, Mrs. Byram knew of the interview with Skip.

"Of course I will give you some food," she said, readily. "It may prove to be the best possible thing for him that he should be so thoroughly frightened. Can you carry oil enough in a bottle?"

"As much as will be needed until to-morrow. It won't do any harm if he scrapes along on short rations for a while," Sam replied, with a laugh. "The only thing is to get him something before Joe an' Bill go back."

A generous package of food, a small quantity of oil, the whole in a paper parcel, and the good samaritans started for the slope once more, noting with satisfaction as they passed that the miners had not yet left the store.

No particular attention was paid to them as they entered the slope, and screening the package as much as possible from view, the boys went with all speed to the repentant regulator's hiding place.

So far as could be seen, the cutting through which Fred had fallen remained as when they ascended, and after letting themselves down this the task was well nigh accomplished.

Skip was most extravagant in his demonstrations of gratitude when they entered the chamber and displayed the supplies.

"It'll take me a mighty long while to straighten this thing up; but I'll do it somehow," he said, and Sam replied, roughly:

"We'll talk about that later. Jest now there's a chance others will find out where you are, for Joe and Bill have gone after men to help search for Billings."

"Then they didn't find him?"

"No."

"I reckon he has gone to Taylor's."

"That won't do him much good unless he walks out of town, for now it is known he's near by, all hands are bound to hunt him down."

"Then they'll be sure to find me."

"We'll hold on in the old drift till they get back, an' try to prevent them from coming up here by saying we've searched this slope," Fred said, after a moment's thought. "That's the only way I know of to keep the secret."

"It won't do any harm to make the attempt," Sam added. "Don't light your lamp, and keep perfectly quiet."

Skip retreated once more to the farther corner of the chamber, and the boys walked slowly down to the drift, halting a short distance from the mouth of the slope as Sam picked up a shovel.

"Here's another tool belonging to the company. It must have been thrown away by Billings or Skip when you dropped on their heads."

"Keep it to show we've been hunting; it can't be long now before the men come, and we'll need some good excuse for loafing here."

"Let's sit down till we hear them. I'm tired enough to want a rest."

Seated on the decaying timbers of the car track the boys discussed in whispers the possibility of aiding Skip to escape from his unenviable position, with never a thought of the deed with which Billings was to crown his villainous career.

The leader of the mob had immediately begun to look about for a chance to wreak his vengeance on the company, when Joe and Bill with their helpers left the level, and he was yet at the farther end of the passage when the boys returned with supplies for Skip.

Their desire to avoid attracting the attention of the workmen caused them to move noiselessly, consequently he was ignorant of the fact that they were in the mine.

It was hardly five minutes after they descended to the old drift when he came back to the cutting, and the odor of gas brought him to a stop.

"Them fools broke through after all," he said, examining the earth piled up at one end, "an' I reckon they found out it wasn't safe to work much farther on that course."

One of the shovels was standing against the side of the excavation, and with this he dug a portion of the dirt from the hole made by Bill's pick.

The foul air rushed through with such force as to nearly suffocate him; but instead of being disappointed he appeared overjoyed.

"I couldn't a' fixed things better in a week's solid work, an' I'll take the chances of gettin' out."

Enlarging the aperture by pushing the earth through between the braces while he covered his mouth and nose with his blouse, he crept back to the drift, unfastened his cap-lamp, removed the safety screen, and placed the light in the passage after raising the wick a trifle.

Just as these preparations had been completed the faint sound of the whistle could be heard from above.

"It's astonishin' what luck I'm having," he muttered. "I can get out while the day shift are leavin', an' ten minutes will be enough to fill this level so full of gas that no power can prevent an explosion."

The air was heavy with the noxious vapor as he went rapidly toward the slope up which crowds of miners were passing, and as some of the men loitered behind the others it became necessary he should hide in the drift to escape detection.

"Why don't the fools move faster," he said, in a hoarse whisper. "It can't be many seconds before the thing comes, an' there'll be no chance for me. There'd be a lynchin' sure if I should show up jest ahead of an explosion."

Big drops of perspiration stood on his brow as he realized that the trap he had set for others might close upon himself, and for an instant he resolved to run back and extinguish the lamp.

"It won't do," he said, half turning and then moving nearer the slope. "There's gas enough in the drift to choke me before I'd get ten yards. Why don't the idiots move faster!"

Only the absolute conviction that he would be lynched if caught at such a time prevented Billings from rushing out.

Each second the vapor became denser, and he wondered why the miners did not perceive it.

The catastrophe must be very near at hand, and he was exposed to the greatest danger.

When it seemed as if an hour had passed, the last man went up the slope, and he started at full speed to gain a higher level.

The incline was almost reached; half a dozen steps more and he would be partially sheltered by the jutting point of slate.

"Luck is still with me," he cried, so loud that those above must have heard him, and at that instant the earth seemed to rock to and fro; there was a flash of blinding light, and the air was filled with flying fragments.

Where had been the lower level was now an apparently solid mass of earth, coal, and slate, covering the body of him who had wreaked his vengeance upon the company.

Joe and Bill were returning from the store when the noise of the explosion was heard, and they, as well as everyone in the vicinity, knew from sad experience what had occurred.

"We're responsible for this!" Bill cried, his face paling. "The gas has burst through from the old drift."

"Thank God it came when most of the poor fellows were quittin' work," and Joe started on a run, followed by every person in the village.

At the mouth of the slope a vast crowd had gathered. Women were calling their husbands and children by name, and as each learned her loved ones were safe, shouts of joy mingled with the wailings of those whose cries remained unanswered.

Even after Mr. Wright arrived the utmost confusion prevailed. All knew it would be certain death to make a descent, while the deadly vapor was so dense, and a second explosion might be expected at any moment.

Bill and Joe stood near the mouth of the slope ready to respond to the first call for volunteers, when Mrs. Byram came up.

"Where is Fred?" she asked, with a brave attempt controlling her fears.

"He went to your house with Sam, so there's no need to worry about them."

"They were not there more than ten minutes."

"Then both are in the crowd somewhere, for they wouldn't go down the slope till we got back."

The almost distracted mother had no thought of keeping Skip's secret at such a time, and when the two miners heard her story all hope for the safety of the boys fled.

"They must have been in the old drift underneath the explodin' gas," Joe exclaimed, involuntarily.

"It isn't sure the trouble began where we think," Bill said, quickly, with a warning glance at his companion. "I've known of men who were shut in a drift for a week, an' then brought out none the worse for wear, so don't despair, Mrs. Byram."

"But why isn't something done to aid them?"

"We shall set to work the very minute it is safe to venture into the next level. Go home, an' Joe or I will bring you the first news."

"Do you think I could remain there knowing my boy is dying, or—or—dead?"

The women near by endeavored to console the sorrowing mother with words of encouragement they themselves believed to be false, and Bill whispered to his mate:

"There's a mighty slim show for the poor lads, an' it's through helpin' him as tried to murder 'em that they've been caught."

Mr. Wright was doing his utmost to ascertain how many were yet in the mine, and after a long while succeeded in learning that at least a dozen men had been overpowered while some distance up the slope.

Those who reached the surface told of a number whom they had seen fall, and some were certain one or two did not have time to gain the slope.

"Who will go with me?" the superintendent asked, as a car was made ready. "I don't want the married men to volunteer, for they are needed at home, and none of us may come back alive."

"Then why not stay here yourself?" a woman cried. "Your wife an' children need you as much as ours need their fathers."

"Because it is my duty," was the calm reply. "Now who will come? I only want two."

"Then the car is full," Bill said, as he and Joe took their places in the box-like vehicle. "We're willin' to go alone, if you'll stay behind."

"No man shall encounter dangers from which I shrink. Lower away slowly, boys," he added to those who were fastening a rope to the car, "and keep a sharp look-out for our signals."

"An' it was his house my Jim helped try to burn!" the woman who had spoken before said in a whisper.

"Make haste," Mr. Wright cried, impatiently. "Remember that every second is precious."

The miners crowded around the car to shake its brave occupants by the hand as if they were never to return, and it was absolutely necessary to push them away in order that the terrible journey might be begun.

With their safety lamps held so that the condition of the air might be ascertained at each stage of the descent, the men slowly disappeared from view, and at the mouth of the slope the crowd surged to and fro in painful suspense; but not a sound could be heard, save as some wife or mother gave vent to a sob of distress.