As the tramp approached, the sentry heard a crackle of the brush and stepped forward. Before the tramp knew it, he was covered by a rifle from the sentry in an unexpected quarter.

Any one but the sentry, with half an eye, might have seen that the fear he showed was cleverly feigned. He threw his hands above his head even before he was ordered and in general was the most tractable captive imaginable. The sentry blew a whistle, whereat the other sentry ran in.

"What shall we do with him," asked the captor.

"Master's orders to take any one to the rendezvous," responded the other firmly, "and lock him up."

Together they forced the tramp to march double quick toward the old hotel. One sentry dropped back at the door and the other drove the tramp before him into the hotel, avoiding the big room on the side where the men were at work and forcing him up-stairs to the attic which had once been the servant's quarters.

There was no window in the room and it was empty. The only light came in through a skylight in the roof.

The sentry thrust the tramp into this room and tried a door leading to the next room. It was locked. At the point of his gun the sentry frisked the tramp for weapons, but found none. As he did so the tramp trembled mightily. But no sooner had the sentry gone than the tramp smiled quietly to himself. He tried both doors. They were locked. Then he looked at the skylight and meditated.

Down below, although he did not know it, in the bare dining-room which had been arranged into a sort of chemical laboratory, Del Mar's men were engaged in manufacturing gas bombs much like those used in the war in Europe. Before them was a formidable array of bottles and retorts.

The containers for the bombs were large and very brittle globes of hard rubber. As the men made the gas and forced it under tremendous pressure into tubes, they protected themselves by wearing goggles for the eyes and large masks of cloth and saturated cotton over their mouths and noses.

Satisfied with the safety of his captive, the sentry made his way down-stairs and out again to report to Del Mar.

At the bungalow, Del Mar's valet was setting the library in order when he heard a signal in the secret pa.s.sage. He pressed the b.u.t.ton on the desk and opened the panel. From it the sentry entered.

"Where is Mr. Del Mar?" he asked hurriedly, looking around. "We've been followed to the headquarters by a tramp whom I've captured, and I don't know what to do with him."

"He is not here," answered the valet. "He has gone to the Country Club."

"Confound it," returned the sentry, vexed at the enforced waste of time. "Do you think you can reach him?"

"If I hurry, I may," nodded the valet.

"Then do so," directed the sentry.

He moved back into the panel and disappeared while the valet closed it.

A moment later he, too, picked up his hat and hurried out.

At the Wilkeshire Club a large number of hunters had arrived for the imitation meet. Elaine, Aunt Josephine, Del Mar and myself rode up and were greeted by them as the Master of Fox Hounds a.s.sembled us. Off a bit, a splendid pack of hounds was held by the huntsman while they debated whether to hold a paper chase or to try a drag hunt.

"You start your cross-country riding early," commented Del Mar.

"Yes," answered Elaine. "You see we can hardly wait until autumn and the weather is so fine and cool, we feel that we ought to get into trim during the summer. So we have paper chases and drag hunts as soon as we can, mainly to please the younger set."

The chase was just about to start, when the valet came up. Del Mar caught his eye and excused himself to us. What he said, we could not hear, but Del Mar frowned, nodded and dismissed him.

Just then the horn sounded and we went off, dashing across the road into a field in full chase after the hounds, taking the fences and settling down to a good half hour's run over the most beautiful country I have ever seen.

The hounds had struck the trail, which of course, as was finally decided, was nothing but that laid by an anise-seed bag dragged over the ground. It was none the less, in fact perhaps more interesting for that.

The huntsman winded his horn and mirthful shouts of "Gone away!"

sounded in imitation of a real hunt. The blast of the horn once heard is never forgotten, thrilling the blood and urging one on.

The M. F. H. seemed to be everywhere at once, restraining those who were too eager and saving the hounds often from being ridden down by those new to the hunt who pressed them.

Elaine was one of the foremost. Her hunter was one carefully trained, and she knew all the tricks of the game.

Somehow, I got separated, at first, from the rest and followed, until finally I caught up, and then kept behind one of the best riders.

Del Mar also got separated, but, as I afterward learned, by intention, for he deliberately rode out of the course at the first opportunity he had and let Elaine and the rest of us pa.s.s without seeing him.

Elaine's blood was up, but somehow, in spite of herself, she went astray, for the hounds had distanced the fleetest riders and she, in an attempt at a short cut over the country which she thought she knew so well, went a mile or so out of the way.

She pulled up in a ravine and looked about. Intently she listened.

There was no sign of the hunt. She was hot and tired and thirsty and, at a loss just to join the field again, she took this chance to dismount and drink from a clear stream fed by mountain springs.

As she did so, floating over the peaceful woodland air came the faint strains of the huntsman's horn, far, far off. She looked about, straining her eyes and ears to catch the direction of sound. Just then her horse caught the winding of the horn. His ears went erect and without waiting he instantly galloped off, leaving her. Elaine called and ran after him, but it was too late. She stopped and looked dejectedly as he disappeared. Then she made her way up the side of the ravine, slowly.

On she climbed until, to her surprise, she came to the ruins of an old hotel. She remembered, as a child, when it had been famous as a health resort, but it was all changed now--a wreck. She looked at it a moment, then, as she had nothing better to do, approached it.

She advanced toward a window of the dining-room and looked in.

Del Mar waited only until the last straggler had pa.s.sed. Then he dashed off as fast as his horse would carry him straight toward the deserted hotel which served him as headquarters for the supplies he was acc.u.mulating. As he rode up, one of his sentries appeared, as if from nowhere, and, seeing who it was, saluted.

"Here, take care of this horse," ordered Del Mar, dismounting and turning the animal over to the man, who led him to the rear of the building as Del Mar entered the front door, after giving a secret signal.

There were his men in goggles and masks at the work, which his knock had interrupted.

"Give me a mask before I enter the room," he ordered of the man who had answered his signal.

The man handed the mask and goggles to him, as well as a coat, which he put on quickly. Then he entered the room and looked at the rapid progress of the work.

"Where's the prisoner?" asked Del Mar a moment later, satisfied at the progress of his men.

"In the attic room," one of his lieutenants indicated.

"I'd like to take a look at him," added Del Mar, just about to turn and leave the room.

As he did so, he happened to glance at one of the windows. There, peering through the broken shutters, was a face--a girl's face--Elaine!

"Just what I wanted guarded against," he cried angrily, pointing at the window. "Now--get her!"

The men had sprung up at his alarm. They could all see her and with one accord dashed for the door. Elaine sprang back and they ran as they saw that she was warned. In genuine fear now she too ran from the window.

But it was too late.

For just then the sentry who had taken Del Mar's horse came from behind the building cutting off her retreat. He seized her just as the other men ran out. Elaine stared. She could make nothing of them. Even Del Mar, in his goggles and breathing mask was unrecognizable.

"Take her inside," he ordered disguising his voice. Then to the sentry he added, "Get on guard again and don't let any one through."

Elaine was hustled into the big deserted hallway of the hotel, just as the tramp had been.