Nearly an hour later it had appeared again; but this time, when halfway up the skies, it had changed its direction until it was heading directly over the spot where the two thrilled campers were watching; and as it approached they saw its color fade slowly until it had disappeared completely from sight among the inky patches between the stars overhead. For minutes the two were not able to locate it--until Jim, once again, had pointed to a faint red spot that grew in color and intensity as it drew away from the zenith. Once again it had disappeared over the rim of the western world--and from then on there was no thought of sleep in the minds of Jim Wilson and Clee Partridge. They were watching the skies, hoping it would return.
"What was the thing?" Jim Wilson exclaimed suddenly with exasperation.
"I"ve been racking my brain, Clee, but nothing I can think of makes sense. It couldn"t have been a plane, and it couldn"t have been a meteor. And if it was a fire-fly--well, then I"m one too." He paused, and looked at the other. "Any new suggestions?" he asked.
"Me--I still think it was a s.p.a.ce ship from Mars or Venus," Clee Partridge answered drily; "searching for a couple of good Earth-men to help "em out of some jam. You noticed the way it disappeared for a moment when it was overhead: it was looking us over."
"Then it"ll be back," answered Jim, not to be outdone, "for it"s not apt to find anyone better qualified. I, myself, would kinda like to take a joy-ride out through the Great Dipper."
Clee smiled and looked down at the luminous dial of his wrist watch.
The two resumed their vigil, and there was quietness between them. For some time they lost themselves in the sparkling glory of the firmament, hardly moving, except to pull closer the collars of their flannel shirts against the increasing coldness of the mountain air.
And then for the third time that night the mysterious sky traveler sprang over the trees on the eastern horizon. Suddenly it appeared; both men saw it at once; and this time it made a clear, beautiful arc straight for the zenith. As it raised, it grew in size, a beautiful, delicate cherry star spanning the whole welkin. The two men got to their knees and watched it, breathless with fascination.
"Look!" cried Jim suddenly.
As had happened on its second appearance, the thing began to slow up and its color gradually faded as it drew directly overhead. By the time it should have reached the zenith it could no longer be seen. It had dissolved against the inky s.p.a.ces above.
"It should come into view again in a moment," Clee said; "a little farther on, like the other time."
They watched, thrilled by the mystery of the midnight phenomenon.
Minutes pa.s.sed, but still it did not appear. Clee grew restive, and as his eyes chanced on his wrist watch he started violently and held out his arm for Jim to see. The radium-painted hands and dial were glowing with unusual brilliance.
Looking quickly into the skies again, Clee sensed something wrong; something different. For a moment he could not figure out what--and then it came to him. One of the great stars, one that he had been watching in its climb up the sky through the night, had disappeared!
He got excitedly to his feet, grabbed his companion"s arm and pointed out this strange thing--and as he pointed another star blinked out and did not reappear.
"Something"s happening up there," Jim said soberly. "I don"t know what; but I, for one, don"t feel quite comfortable."
He kept peering at the place pointed out, at a spot of black even darker than the inky sky; or did he only imagine it was darker? he asked himself. Soon the spot enlarged; became a distinct patch; then, growing still, obliterated one star after another around its borders.
It made a pure circle; and before long the starlight glinting off its sides showed it to be a great, tinted sphere.
Swiftly it dropped down on the two men, and they watched it hypnotized, incapable of moving. It was only a hundred yards overhead when some presence of mind returned to Clee.
"Run, Jim!" he yelled, moving away. "It"s coming straight down!"
Wilson came out of his daze and the two sprinted wildly for the path that led down the spur on which their camp was located. They had not made more than fifty yards when they heard a dull thud, and, turning, saw the great sphere resting on the ground with a slight rocking motion that quickly ceased.
A gully cut into the trail ahead, and when they reached it Clee grabbed his partner"s arm and pulled him off to one side, where, panting with their sudden exertion, they wormed up to the brow and peeped over at their strange visitor.
The sphere stood in the starlight on the very spot they had been occupying when they first saw it. Right in their campfire it lay--a great, dark-red crystal shape perhaps fifty feet in diameter, whose surface sparkled with innumerable facets. It rested quietly on the ground, as if oblivious of the two routed men breathlessly watching it from a short distance. No ports or variations of any kind were visible to mar its star-reflecting sides.
"It must be some new kind of dirigible!" murmured Jim; "but why did it go and pick on us for its midnight call!"
"It"s a s.p.a.ce ship from Mars," answered Clee with a serious face.
"They heard you, and"re coming to take you for your ride. See?" he added quickly, pointing.
A large door was opening in the side of the sphere, and the illumination within threw a bright beam of amber-colored light in their direction. A metallic ramp slid out and angled down to the ground.
Breathlessly the two men waited to see who would emerge, but a long time went by without their catching the slightest sign of life within.
The face of Clee"s wrist watch was fluorescing brilliantly now, and moment by moment the weird glow was increasing. Jim stirred nervously.
"I don"t mind telling you, I"m scared," he said.
"Aw, they won"t make you walk back," consoled Clee; but he was scared himself. Why didn"t something happen? Why didn"t someone come out of the ship?
Jim thought he heard a noise, and touched Clee on the shoulder, pointing to a place on the trail down which they had come a few minutes before. Clee looked, and as he did so the hair on the back of his neck stood up. For the bushes along the side of the path were moving as if they were being brushed aside by someone in pa.s.sing--someone making a straight line to the spot where they lay concealed. And no one was there!
"Can they be invisible?" breathed Jim, every pore in his body p.r.i.c.kling.
For a moment the two men could hardly breathe, so great was their unnamed fear. During that time no other movements could be noted. Then Clee suddenly pointed to a bush only five yards away. Half a dozen leaf-tipped branches were bending slowly in their direction--and then a sharp crack, as of a broken twig, came to them from the same spot.
Panic, blind and unreasoning, swept them. "Run!" gasped Jim; and together, instinctively, they turned and scrambled down the side of the ridge to get away, anywhere, far from the approaching menace of they knew not what. Reckless of possible injury, they slid and stumbled down the brush-covered slope--and right behind them came sudden crashing sounds of pursuit.
New fears lent wings to their flight, but the sounds behind continued inexorably at their heels no matter how fast they ran or how lucky they were in making past obstacles. Their pursuer was as fast as they.
They had no idea who--or what--it might be, for in the brief glances they s.n.a.t.c.hed over their shoulders they could not see anything at all!
The going was bad, and the two campers had not gone more than a quarter-mile when they were breathing hard, and felt that they could not make one more step without collapsing on the ground to give their laboring lungs a chance to catch up. Panting like dogs they dragged themselves along through pine and birch trees, around large rocks and over briar-covered hills, only a few steps ahead of their pursuer.
Then Partridge, a little in the lead as they made their way up a steep slope, heard Jim suddenly go sprawling; heard him gasp:
"It"s got me!"
Turning, he saw his partner rolling and threshing violently on the ground, and now and then lashing out at the empty air with his fists.
Without a moment"s hesitation he jumped from his position above--jumped square and hard into the s.p.a.ce which Jim"s invisible a.s.sailant should be occupying. With a great thud he crashed into some unseen body in the air, and went down, the breath knocked out of him.
As he got to his knees an odor like that of cloves came to his nostrils, and something caught him around the neck and began constricting. Frantically he tried to tear himself loose, but the harder he struggled the more strangling became the grip on his neck; and at last, faint from the growing odor and the lack of air, his efforts dwindled into a spasmodic tightening and relaxing of the muscles.
Then, for a moment, the hold on his neck must have loosened, for he found himself able to breathe a little. Turning, he saw Jim at his side, apparently similarly held.
"If I could only--see it!" Clee managed to get out. Jim"s spasmodic, bitter answer came a moment later.
"Being invisible--tremendous advantage!" he gasped.
In desperation the two men again began to fight against the clutches that were holding them, and this time the grip about their necks unexpectedly loosened--to bring to their noses the odor of cloves overpowering in strength. And that was all they knew before they lapsed into a black and bottomless void....
Through the lifting haze of returning consciousness Clee felt a command to get up. As he automatically complied he saw that Jim was doing likewise. Once on his feet he felt another impulse to go to the cherry-crystal sphere, visible in the distance; but his legs were weak, and neither he nor Jim could walk very well until out of the nothingness around them came something of invisible bulk to lend them support.