CHAPTER VI.
A SMALL EXPLOSION.
A SMALL EXPLOSION.
A SMALL EXPLOSION.
“Now,” suggested Ben as the purr of the motors came softly on the evening air, “do you suppose Havens has really caught up with us?”
“Impossible!” cried Jimmie, “we’ve stopped a good many times on the route, but he couldn’t overtake us, for all that, for the reason that he wouldn’t leave New York before afternoon. According to that we would have at least ten hours the start of him.”
“That’s right!” Ben agreed. “Perhaps the motors we hear belong to the flying machine of some sport out for a twilight ride. There are a good many aeroplanes passing between St. Louis and the east at this time of the year. We may hear other machines before morning.”
“Suppose,” Carl suggested, with a startled expression in his eyes, “that the clatter in the sky is caused by the flying machine operated by the fellow who chased Jimmie up New York bay?”
“Then that would mean trouble,” Jimmie grinned. “But, say!” he went on in a moment. “I wouldn’t mind meeting that fellow where the going was good. I’d show him that his machine is a back number.”
The boys searched the sky eagerly for a light which would indicate the position of the aeroplane. After a long time they saw a faint gleam almost directly overhead. The airship seemed to be descending.
“I wish we hadn’t built this fire,” Ben suggested.
“Suppose we put it out!” Carl advised.
“No use now,” Ben put in. “The fellow knows exactly where we are. Besides,” he went on, “if we should attempt to leave our present location, the clatter of the motors would show him exactly where we landed.”
“Then all we’ve got to do,” Jimmie explained, “is to remain right here and watch our machines all night. That’s what I call a downright shame!”
“We don’t have to all watch at the same time,” Ben advised. “You boys go to sleep after we get our supper and I’ll stick around until midnight.Then one of you can go on guard until four in the morning and the other watch until we get ready to leave.”
“That’s about the way we’ll have to do it,” Jimmie responded, “only,” he went on, “if the fellow makes his appearance at the camp and tries any funny business, the one on watch must wake the rest of us.”
This being agreed to, the boys ate a hearty supper and Jimmie and Carl crawled into a hastily set up shelter-tent and were soon sound asleep. Ben did not remain by the camp-fire after that. Instead, he took a position beyond the circle of light, from which the machines were in full view, and watched and listened for the appearance of the mysterious aviator.
Directly the whirr of the motors came louder, and the boy saw the bulk of an aeroplane outlined against the field of stars above.
It was quite evident that the stranger was seeking a place to land, and Ben, resolving to take the initiative, hastened out into the field swinging an electric searchlight.
“Now,” he thought, “we’ll see if this fellow wants to meet us face to face, or whether he wants to sneak about in the darkness in order to work mischief to our machines.”
After the boy had waved his searchlight for a moment a shout came from above, and a machine every bit as large and as finely finished as theLouisecame volplaning down to the field.
The rubber-tired wheels had scarcely ceased revolving in the soft earth when Ben stood by the side of the machine, from which a man of about thirty years—a tall, slender man, with very blue eyes and a very blond head—was alighting.
“Hello, son!” the man exclaimed, as he came up to where the boy was standing, “are you out on a trip for your health, too?”
“That’s about the size of it,” answered Ben.
“Where from?” was the next question asked.
“New York city,” was the reply.
“Good old town!” exclaimed the stranger, walking toward the fire as if inclined to make himself quite at home.
“You bet it is!” answered Ben, following along close by his side and watching his every move with suspicion.
The boy regretted now that he had not awakened his chums before giving the signal to the stranger. There was no knowing what the man might attempt to do. Ben did not fear physical violence for he considered himself more than a match for the intruder. But he knew that a stick of dynamite or some other destructive explosive tossed into the mechanism of the machines would render them absolutely useless.
For this reason he watched the visitor closely, never taking his eyes from the rather large and ham-like hands which swung pendulously at his sides. The stranger did not appear to notice the attention he was receiving.
“What I came down for,” he said as he approached the camp-fire and stood warming his hands before the blaze, “was to ask questions.”
He smiled brightly as he spoke and gave a searching glance at the shelter-tent where Jimmie and Carl were sleeping.
“It’s easy enough to ask questions,” suggested Ben.
“Easier than to get them answered,” responded the other. “I found that out this afternoon.”
Ben eyed the stranger in wonder but asked no questions.
“About the middle of the afternoon,” the man went on, “I came upon a machine lying in a little dell back in Indiana. I shot down with something like the nerve I exercised in visiting you, and began talking with the aviator. He certainly was about the most insignificant looking specimen of humanity I ever saw.”
“Wait a minute,” smiled Ben. “He had a small, weazened face, large, wing-like ears, and hunchy shoulders—shoulders which give one the impression that he has spent the most of his life at the end of a mucker’s shovel in the subway. Is that a good description?”
“A better one than I could have given!” answered the stranger. “You must have seen him somewhere. I hope your experience with him was not so unfortunate as mine.”
“He made you trouble, did he?” asked Ben.
“He stole a pocketful of spark plugs,” was the reply.
“Yet you seem to be traveling all right,” suggested the boy.
“Oh, he didn’t get all I had,” was the answer. “I volplaned down to him, and he invited me to partake of a lunch he was serving himself on the grass. Just for form’s sake, I sat down with him. Then he began asking questions. He wanted to knowwhere I came from, if I had seen any other machines in the air that afternoon, and if I had heard anything of two aeroplanes starting out on a journey across continent to the Pacific coast. After a time his questions became personal.”
“And you answered them, I suppose!” laughed the boy.
“No, I didn’t,” returned the stranger. “I closed up like a clam in a short time, and then he arose and, without my permission, began examining my machine. To make a long story short, he got the spark plugs out of a box under the seat without my knowing it. I never discovered the loss until I was some distance away.”
“You left him there in the dell you speak of?” asked Ben.
“Yes, I left him there in a little hollow between two hills.”
“Why didn’t you go back after you had discovered your loss?” asked Ben, suspiciously. “You might have caught him if you had gone back.”
The firelight was uncertain, and the visitor’s face was turned half away, but Ben was almost certain that he saw the red blood mounting to his temples. The man also seemed embarrassed by the question.
“I did go back,” he answered after a moment’s hesitation, “but the fellow had disappeared. I thought this might be his fire.”
There was a short silence, during which Ben poked aimlessly at the burning brands and the stranger looked critically around the camp. In a moment, with a complimentary remark regarding theLouiseand theBertha, the intruder arose from the ground where he had been sitting and walked carelessly toward the machines. Ben followed him, watching every movement as if his life depended upon the scrutiny.
The two machines stood quite close together, and as the stranger approached them Ben stepped a pace in advance and whirled about. The stranger started back with an exclamation of surprise.
“We don’t permit strangers to inspect our aeroplanes,” Ben said.
“Pardon me,” the other smiled, “I really didn’t mean any harm. It is quite natural that one should desire to inspect a beautiful machine.”
The stranger kept pushing on, and at last brought his thin body into contact with the boy’s sturdy one. There was no doubt in the mind of the boy now that the fellow was there for mischief. Hestruck out swiftly from the shoulder, but the intruder dodged the blow neatly and, taking a package from the right-hand pocket of his coat, hurled it toward the aeroplanes. Ben’s clenched fist caught the other’s arm as the throw was released, and the missile, whatever it was, went wide of the mark.
Ben saw the glitter of a shining surface in the firelight, and the next instant an explosion which seemed to shake the earth sounded in his ears. Without waiting to see the effect of the explosion, the stranger faced about and ran at full speed toward the spot where he had left his aeroplane.
Ben followed him a few paces and then, deciding that it would be unsafe to leave the machines, turned back toward the camp-fire to see Jimmie and Carl come tumbling out of the shelter tent, rubbing their sleepy eyes. What Ben feared was that a second person had landed from the stranger’s machine before it had shown above the camp-fire.
“What’s coming off here?” demanded Jimmie.
“Gee!” exclaimed Carl, “I thought that was the crack of doom!”
“Get down to the machines, quick, you boys!” Ben cried out. “There may be some one trying to work them an injury.”
The two boys darted away, stopping only to secure electric flashlights, and were soon seen examining the aeroplanes. Ben waited a moment for some indications that the boys had met with a lurking enemy, and then started away in pursuit of the treacherous aviator.
He was not in time, however, to stop the fellow before his machine launched into the air. As his aeroplane rose, Ben saw that he swung his face for an instant toward the camp. For only a moment the light of the fire shone on the face so turned back. Ben thought he had never seen a more villainous expression on any human countenance.
The boy returned to the machines and joined his chums with an angry scowl on his face. He was angry at himself for having for a minute regarded the stranger in a friendly spirit.
“Where’s the artillery?” asked Jimmie, flashing his light about the aeroplanes. “I thought I heard cannonading.”
As briefly as possible, Ben explained what had taken place, and the three walked over to the spot where the missile had struck and exploded. There was a great hole in the ground, and tiny fragments of a tin can lay scattered about, lying at some distance from the hole.
“Nitroglycerine!” exclaimed Ben, picking up one of the fragments.
“That only goes to show,” Jimmie answered, wrinkling his freckled nose, “that this trip of ours is not at all like a Sunday School picnic. I wish we had caught him before he mounted his machine,” he went on. “I’d like to fill him so full of holes that he could go away and play that he was a Swiss cheese.”
There was very little sleep in the camp that night. The boys were away at daylight, and a couple of hours later saw the machines snugly tucked away in a hangar not far from the aviation field near Forest Park.
They waited about the post-office, taking turns watching at the general delivery window, until nearly noon but, as the reader well understands, Havens did not make his appearance. Their vigil during the afternoon produced no better results. Toward evening they tried to reach Havens by wire in New York, but their dispatches met with no response for a long time. At last a message came from the millionaire’s private office at the hangar in Westchester county.
It was very brief, and gave only the information that Havens had taken a stateroom for St. Louis the previous evening, and that he had mysteriously disappeared before the train had left the city.
“That’s a knock-out!” exclaimed Jimmie.
“And now,” asked Ben with a puzzled look, “shall we go back to New York and help find Havens, or shall we cross the continent in quest of the burglars?”