"Thought vibration. The touch is not really felt nor the voice heard: they are only imagined. The radioactive waves of the brain of even you Black Age people are swift enough to bridge s.p.a.ce and Time. And it is the mind that carries us beyond the third dimension."

Her red mouth reached closer to him, her blue eyes touched hidden forces that slept in remote cells of his being. "You are going into Eternal Time, John Northwood, Eternity without beginning or end. You understand?

You feel it? Comprehend it? Now for the contact--kiss me!"

Northwood had seen Athalia vanish under Adam's kiss. Suddenly, in one mad burst of understanding, he leaned over to his magnificent temptress.

For a split second he felt the sweet pressure of baby-soft lips, and then the atoms of his body seemed to fly asunder. Black chaos held him for a frightful moment before he felt sanity return.

He was back on the terrace again, with Eve by his side. They were standing now. The world about him looked the same, yet there was a subtle change in everything.

Eve laughed softly. "It is puzzling, isn't it? You're seeing everything as in a mirror. What was left before is now right. Only you and I are real. All else is but a vision, a dream. For now you and I are existing one minute in future time, or, more simply, we are in the Fourth Dimension. To everything in the third dimension, we are invisible. Let me show you that Dr. Mundson cannot see you."

They went back to the room beyond the terrace. Dr. Mundson was not present.

"There he goes down the jungle path," said Eve, looking out a window.

She laughed. "Poor old fellow. The children of his genius are worrying him."

They were standing in the recess formed by a bay window. Eve picked up his hand and laid it against her face, giving him the full, blasting glory of her smiling blue eyes.

Northwood, looking away miserably, uttered a low cry. Coming over the field beyond were Adam and Athalia. By the tr.i.m.m.i.n.g on the blue dress she wore, he could see that she was still in the Fourth Dimension, for he did not see her as a mirror image.

A look of fear leaped to Eve's face. She clutched Northwood's arm, trembling.

"I don't want Adam to see that I have pa.s.sed you beyond," she gasped.

"We are existing but one minute in the future. Always Adam and I have feared to pa.s.s too far beyond the sweetness of reality. But now, so that Adam may not see us, we shall step five minutes into what-is-yet-to-be.

And even he, with all his power, cannot see into a future that is more distant than that in which he exists."

She raised her humid lips to his. "Come, beloved."

Northwood kissed her. Again came the moment of confusion, of the awful vacancy that was like death, and then he found himself and Eve in the laboratory, following Adam and Athalia down a long corridor. Athalia was crying and pleading frantically with Adam. Once she stopped and threw herself at his feet in a gesture of dramatic supplication, arms outflung, streaming eyes wide open with fear.

Adam stooped and lifted her gently and continued on his way, supporting her against his side.

Eve dug her fingers into Northwood's arm. Horror contorted her face, horror mixed with rage.

"My mind hears what he is saying, understands the vile plan he has made, John Northwood. He is on his way to his laboratory to destroy not only you and most of these in New Eden, but me as well. He wants only Athalia."

Striding forward like an avenging G.o.ddess, she pulled Northwood after her.

"Hurry!" she whispered. "Remember, you and I are five minutes in the future, and Adam is only one. We are witnessing what will occur four minutes from now. We yet have time to reach the laboratory before him and be ready for him when he enters. And because he will have to go back to Present Time to do his work of destruction, I will be able to destroy him. Ah!"

Fierce joy burned in her flashing blue eyes, and her slender nostrils quivered delicately. Northwood, peeping at her in horror, knew that no mercy could be expected of her. And when she stopped at a certain door and inserted a key, he remembered Athalia. What if she should enter with Adam in Present Time?

They were inside Adam's laboratory, a huge apartment filled with queer apparatus and cages of live animals. The room was a strange paradox.

Part of the equipment, the walls, and the floor was glistening with newness, and part was moulding with extreme age. The powers of disintegration that haunt a tropical forest seemed to be devouring certain spots of the room. Here, in the midst of bright marble, was a section of wall that seemed as old as the pyramids. The surface of the stone had an appalling mouldiness, as though it had been lifted from an ancient graveyard where it had lain in the festering ground for unwholesome centuries.

Between cracks in this stained and decayed section of stone grew fetid moss that quivered with the microscopic organisms that infest age-rotten places. Sections of the flooring and woodwork also reeked with mustiness. In one dark, webby corner of the room lay a pile of bleached bones, still tinted with the ghastly grays and pinks of putrefaction.

Northwood, overwhelmingly nauseated, withdrew his eyes from the bones, only to see, in another corner, a pile of worm-eaten clothing that lay on the floor in the outline of a man.

Faint with the reek of ancient mustiness, Northwood retreated to the door, dizzy and staggering.

"It sickens you," said Eve, "and it sickens me also, for death and decay are not pleasant. Yet Nature, left to herself, reduces all to this.

Every grave that has yawned to receive its prey hides corruption no less shocking. Nature's forces of creation and destruction forever work in partnership. Never satisfied with her composition, she destroys and starts again, building, building towards the ultimate of perfection.

Thus, it is natural that if Dr. Mundson isolated the Life Ray, Nature's supreme force of compensation, isolation of the Death Ray should closely follow. Adam, thirsting for power, has succeeded. A few sweeps of his unholy ray of decomposition will undo all Dr. Mundson's work in this valley and reduce it to a stinking holocaust of destruction. And the time for his striking has come!"

She seized his face and drew it toward her. "Quick!" she said. "We'll have to go back to the third dimension. I could leave you safe in the fourth, but if anything should happen to me, you would be stranded forever in future time."

She kissed his lips. In a moment, he was back in the old familiar world, where right is right and left is left. Again the subtle change wrought by Eve's magic lips had taken place.

Eve went to a machine standing in a corner of the room.

"Come here and get behind me, John Northwood. I want to test it before he enters."

Northwood stood behind her shoulder.

"Now watch!" she ordered. "I shall turn it on one of those cages of guinea pigs over there."

She swung the projector around, pointed it at the cage of small, squealing animals, and threw a lever. Instantly a cone of black mephitis shot forth, a loathsome, bituminous stream of putrefaction that reeked of the grave and the cesspool, of the utmost reaches of decay before the dust accepts the disintegrated atoms. The first touch of seething, pitchy destruction brought screams of sudden agony from the guinea pigs, but the screams were cut short as the little animals fell in shocking, instant decay. The very cage which imprisoned them shriveled and retreated from the h.e.l.lish, devouring breath that struck its noisome rot into the heart of the wood and the metal, reducing both to revolting ruin.

Eve cut off the frightful power, and the black cone disappeared, leaving the room putrid with its defilement.

"And Adam would do that to the world," she said, her blue eyes like electric-shot icicles. "He would do it to you, John Northwood--and to me!" Her full bosom strained under the pa.s.sion beneath.

"Listen!" She raised her hand warningly. "He comes! The destroyer comes!"

A hand was at the door. Eve reached for the lever, and, the same moment, Northwood leaned over her imploringly.

"If Athalia is with him!" he gasped. "You will not harm her?"

A wild shriek at the door, a slight scuffle, and then the doork.n.o.b was wrenched as though two were fighting over it.

"For G.o.d's sake, Eve!" implored Northwood. "Wait! Wait!"

"No! She shall die, too. You love her!"

Icy, cruel eyes cut into him, and a new-fleshed hand tried to push him aside. The door was straining open. A beloved voice shrieked. "John!"