There was an instrument among their stores for taking samples of gas.
Harkness attached it to the ship before he left, and he took a few precious minutes for a flight into the heights. That gas up there was fatal to the monsters of s.p.a.ce: he must secure a sample and learn its composition.
A closing of the switch on wires that led to the instrument outside, and he knew that the container had emptied its contents of water, drawn in the gas and sealed itself.
Then the swift descent.
He flew low as he circled back. They had traveled far on their journey below ground; it was even a longer route where he and Towahg had circled about. But it was the only route he knew; he could take no chances on a short-cut and a possible long-drawn search for the little valley.
He followed the trail. The quick dusk was near; but in an hour"s slow flying, while his eyes searched the hills and hollows, the valley was in sight.
He came down slowly in a black sky, with only the soft, m.u.f.fled roar of the lower exhausts. It was growing dark, and he leaned from an open door to see more clearly his position. All was different from the air, and he needed time and careful scrutiny to get the bearings of the place.
The soft thunder from below was in his ears when a sound pierced through. His own name! And it was Diane"s voice calling him in a terrified tone.
"Walter!" she cried. "Help! Help! Oh, Walter, come quickly!"
The scene below was lighted by fitful fires. He was above the upper valley, a hundred yards from their cave: his mind was oriented in an instant, and he knew each foot of ground.
And here, where neither Diane nor Chet should be, was Diane. He saw her running in the bright glare of his landing light that he now switched on; saw a black shape hurl itself upon her; she was struggling. He threw himself back at the controls to send the ship like a thunderbolt upon the earth.
A pistol was in his hand as he leaped from the still-rocking ship and threw himself upon the thing that ran and tried to carry a struggling burden in its arms.
He could not fire; but he brought the pistol down upon a heavy skull.
The hairy figure seemed never to feel the blow. It dropped the body of Diane and turned, and its slavering, shining fangs were set in a horrible face that Harkness recognized.
It was the leader of the tribe, and he had dared to attack. But where was Chet? What of his arrows and their detonite tips? These thoughts were crowding through his mind in the instant that ape-like fingers gripped at his throat--the instant while he was bringing the pistol forward and up.
A light charge of detonite in pistol ammunition--but no living body could withstand the shock. Harkness leaped over the fallen foe to reach the girl. She was half risen to a sitting posture as he came.
"_Dieu!_" she was whispering; "_Ah, le bon Dieu!_" Then she cried out: "Walter! Oh, Walter, they have killed Chet! Down there!" Her hand was pointing. She grasped at Harkness" hand to draw herself to her feet and race with him toward the cave.
"Just at dark," she explained gaspingly as they ran. "It was their chief, and there were others with him. They leaped upon Chet--before he could reach for his bow. They had seemed so friendly after you left--but they were short of food--"
Her voice was sobbing now, but she kept on, and she set a pace that Harkness could not outdistance.
"One aimed a spear at me, and Chet threw himself between. I saw the spear strike--then I ran. I thought I heard your motors--I screamed for you--"
They were nearing the caves. A fire was burning in the open glade where grotesque figures leaped and danced in cannibal glee about a figure that lay motionless upon the ground.
The tattered, wind-blown clothing--the curling hair, blond in the fire"s light--it was Chet.... And now Harkness could fire.
His pistol held twenty rounds. He emptied it into the shrieking group, then jammed in more of the sh.e.l.ls and fired again. He fired until no target remained, and every savage figure was either vanished among the trees or inert and lifeless upon the ground, their only motion the stirring of their hairy coverings in the breeze.
Harkness was beside the prostrate figure. He raised Chet"s head within his arms; Diane"s brown head leaned close, her gasping breath broken by dry sobs. The firelight flickered upon the closed lids to give them semblance of life.
"Chet," said Walter Harkness softly. "Chet, old man--can"t you speak?
We"ll save you, Chet; you"re not done for yet." But he felt as he spoke that the words were a horrible lie; the blood that ran slowly now from a wound in Chet"s side seemed to speak more truly than did he.
Yet Chet Bullard opened his eyes. His breath was the merest flutter; the listeners bent their heads close to hear.
"Made it, did you?" asked Chet in a ghastly whisper. "And you"ve saved Diane?... Good!... Well, it"s been a great trip.... It"s been worth the price...."
Harkness seized at the girl"s name. Here was something that might strike home to the sinking man; might rouse him.
"Yes, Diane is saved," he told Chet: "saved for you, old fellow. You must live--for Diane"s sake. You love her, and she needs you."
Again the tired eyes opened. Once more the fluttering breath formed words; lips moved to bring a pale ghost of Chet"s ready smile like a pa.s.sing light across his face.
"Needs me? Diane?" It was a question and a denial. He was looking straight at Harkness as he added: "It"s you she needs.... You"re one square old sport, Walt, but dumb--awfully dumb...."
Glorious adventure!--and the price is so often death. "A great trip,"
Chet Bullard had said; "it"s been worth the price." Chet was prepared to pay in full.
But--there was the ship! Walt Harkness, as she finished bandaging the body of the unconscious man, stared first at the metal cylinder, gleaming, brilliant in the Earthlight; then his gaze went to the Earth that had risen over distant peaks with the glory of a thousand moons.
And he dared to hope.
He brought the ship softly to rest close to where Chet lay, then placed the limp form on the self-adjusting floor of the control room.
There must be no shifting of the body as the pull of gravitation ceased. Soft blankets made a resting place for him.
The entrance port was closed and sealed; and the ship rose gently under his touch. And, below them, the mirrors showed a world that sank away. Diane"s head was pressed near to his to watch that vanishing world.
Each rugged mountain was softened in the Earthlight"s mellow glow; they melted together, and lost all sharpness of form. And the light faded and vanished as they rose into the blanket of gas that blocked off the return rays and made of this world a dark moon.
No regret now for the territory that was unexplored. Harkness told himself he would return. And, with the vanishing of that world his thoughts were only of the little flame of life that still flickered in Chet"s body, and of the Earth, and of the metal ball that was swinging them out and away.... The sound of the stern exhaust built up and up to the roaring thunder that meant the blast was opened full....
CHAPTER XI
"_Nothing to Be Done_"
Unmoving, their ship seemed, through the long hours. Yet there were lights that pa.s.sed swiftly and unnoticed, and the unending thunder from the stern gave a.s.surance that they were not floating idly in the vast sea of s.p.a.ce.
The sun was behind them, and ahead was Earth in midday glory; Harkness could not tear his eyes away from that goal. He stood always at the controls, not because there was work to be done, but for the feeling it gave him of urging the ship onward.
Diane ministered to Chet and dressed the wound. There were few words exchanged between them.
The menace that had emptied Earth"s higher levels of all aircraft was still there. No ships were in sight, as Harkness guided his ship toward the great sphere. His speed had been cut down, yet still he outraced the occasional, luminous, writhing forms that threw themselves upon them. Then the repelling area--and he crashed silently through and down, with their forward exhaust roaring madly to hold them in check.