The commotion had awakened the child, who started whimpering, adding further to Jack's distractions. Yet he managed, in spite of ghastly mental pictures of June being torn to pieces by her attackers, to keep his hands steady.
A few minutes later she slipped into the room and laid her cold cheek against his before taking her place at the instruments.
"It's all right," she added. "I don't think they'll attack in the dark. There are five of them. I'm sure I wounded or killed one. They weren't expecting a guard. I left the gun with father. He's behind the cashier's desk." Then, all her courage evaporating, she turned an appealing, little girl face toward her lover. "Don't let yourself be killed, Jack. I'd die too."
"June, you're wonderful," he whispered. "I didn't know there was a girl alive as brave as you. Good-by. No matter what happens, keep the wave in tune." He kissed her tenderly, trying not to think he had done so for the last time, and hurried out.
The stairs were black as the inside of a tomb. Once he stumbled over the body of a charwoman and came near falling headlong.
"Nothing's happened since that first volley," whispered Manthis when Jack slipped into the cage. "They're holding off for dawn. Look!" his voice wavered. "Was that a face at the window?" He fired wildly. Glass tinkled.
"Easy," warned Baron. "Don't waste ammunition. Besides, if you get this place full of smoke they'll jump us."
Dawn was painting the windows gray when the assault began. Their first warning came when a small object was tossed into the lobby. It exploded in a cloud of white vapor.
"Tear gas," yelled Jack. "Back to the stairs." They ran for cover, weeping and choking.
Then began a slow retreat up the stairways, Jack guarding the front and Manthis the back passages. At first it was a simple matter for their enemies to toss tear bombs through the fire doors, then, protected by respirators, capture another floor. But as the light increased this became more and more hazardous. Twice a spray of buckshot laid a Solinski man low.
"He hasn't many men available," called Jack as the attack slackened.
"But watch out. His time's about up. Hey, look at that woman!" A white-uniformed maid, whom he remembered having seen lying in the same spot every time he climbed the stairs, had stirred weakly, as though about to wake.
It was their glance at the sleeping form which undid them. When they looked up both fire doors were open and helmeted figures were emerging from them.
The shotguns roared. Two of their attackers collapsed, but the others came on. Before there was time for another shot they were at close quarters. Standing back to back, Manthis and Jack clubbed their guns and held their ground.
The fact that Solinski and his men wore respirators handicapped them immensely, so that the two defenders kept a cleared circle about them.
One of the attackers, more daring than the rest, leaped forward to engage the engineer. He collapsed with a crushed skull.
Then, when victory seemed in their grasp, luck turned. At Jack's next blow the stock of his weapon parted from the barrel, leaving him almost defenseless. At the same time Manthis slipped and collapsed from a knife thrust.
Jack was left alone to face three enemies and would have been killed within the minute had not Solinski, recalling the little time he had left to stop the interfering wave, deserted his comrades and sprinted for the laboratory.
The seeming defection of their chief threw the other two attackers into momentary confusion. Before they could recover, Jack knocked one out with the gun barrel, then came a flying tackle at the other.
But he had caught a tartar. His remaining enemy was a gigantic Negro.
Recovering from his surprise the latter lifted high a glittering knife to finish his disarmed foe. Jack snatched at the uplifted arm--missed!
A revolver cracked. The hooded Negro staggered, then crashed forward.
"Remembered my pistol just in time," gasped the doctor from the floor.
"Don't bother about me. I'm all right. Stop Solinski, for God's sake."
Although his lungs seemed bursting Baron turned and flew up the stairs. Being familiar with every turn, he gained on the Russian and caught sight of the dreadful black coat-tails as his enemy burst through to the twentieth floor. The locked door of the apartment baffled him only a moment. Stepping back, Solinski hurled his giant frame against the panels. They splintered and crashed inward. But the delay allowed Jack to catch up.
He leaped on the Russian's back. Locked together they reeled into the living room. For a fleeting moment Jack saw June sitting rigidly at the instruments. Her eyes were starting from their sockets but her hands were steady.
"I warned you to kill yourself," Solinski's voice rose in a screaming whisper through the respirator. "Now I will do it." Displaying the strength of madness he hurled Jack from him. Losing all control of his limbs, the younger man flew across the room and demolished the divan in his fall. But the thought of what Solinski would do to June brought him back to the attack.
The fury of their struggle wrecked the living room. Both bled from numerous wounds. One of the Russian's bleak eyes closed under a well-directed blow, but otherwise he seemed unaffected. Jack grappled again and realized his mistake as he was caught in a bone-cracking grip and forced into the laboratory.
Baron felt a rib snap. A sweat of agony broke out over his body.
Holding his enemy helpless the invader worked his way toward the work table. They bumped against it, making the equipment totter perilously.
Solinski released his grip, snatched a bottle of distilled water and swung.
Jack felt his head explode. The room went dark. But in his semi-consciousness he remembered he must not let the Russian reach that switch. As he slid slowly to the floor, he grasped the other's legs.
The drug fiend tried to kick free, stumbled, struck the table with his hips. Throwing out his arms to regain his balance he plunged one hand among the naked cables which led from the generator to the transformers and tubes.
A blinding flash of light and the scream of a soul in torment followed. As a nauseating odor of burning flesh filled the room, the Russian was hurled backward like a rubber ball. He struck the window which overlooked the park, crashed through the large panel and fell!
June sat as though hypnotised, forcing herself to manipulate those dials.
Jack crawled to the window and watched the black body swoop downward like a wounded bird, the coat flapping like crippled wings. After what seemed an eon it struck the edge of the subway kiosk, bounced like a rag doll and sprawled across the pavement.
Still Jack did not move. Through a haze of his own blood he stared, the fate of his enemy forgotten. All about the kiosk bodies which had laid so still for the past week were moving. The little figures, not much larger than ants from that height, yawned, sat up and stretched as though it was the commonest thing in the world to take a nap in the midst of Fifth Avenue. It was as if the last swoop of that batlike figure had returned them to consciousness.
"The world is alive! The world is alive!" Baron croaked wildly as he felt his senses slipping from him. "We have won, June! We have won!"