I'll try to find a way, but--we can always communicate telepathically.

Jaska...."

"Jaska," said that young lady grimly, "goes with Sarka wherever Sarka goes!"

"But it may mean death! We can only guess at the cunning of the Moon dwellers! They may have been in secret communication with Dalis for centuries! Dalis, who somehow discovered our secret finger code, may also know of the secret exit dome, and the principle upon which it operates! If he does, he may know how to combat it! Perhaps that explains his laughter! Perhaps he heard and understood every word we spoke, hears and understands every word we speak now! Who knows? He may wait until I have pa.s.sed through the secret exit dome, and then make it impossible for me to be reincarnated on the Moon--or elsewhere!"

"No matter," said Jaska softly, "wherever Sarka goes, there goes Jaska! It is useless to attempt to dissuade me, and it is time you learned that!"

In spite of himself Sarka smiled, and his father met his smile with a quizzical one of his own. Both men had the same thought.

"The eternal woman!" said Sarka the Elder. "No man has ever understood her--no man ever will! And all men are ruled by her!"

Sarka shrugged, and Jaska spoke again.

"Don't you think it is time we tried this new experiment?"

Sarka nodded, and his face was suddenly alight with the excitement which burned within him.

"First," he said, "we need accoutrements of the Gens of Dalis for two people!"

Jaska smiled.

"Forseeing that we might have need of such equipment, I had several complete outfits sent here when I took charge of the Gens of Dalis as its Spokesman!"

Two minutes later, arrayed in the green clothing of the House of Dalis, swathed in it from neck to toe, wearing their belts and the masks which were necessary to life in s.p.a.ce where there was no atmosphere, the whole topped by the gleaming helmets whose skull-pans held the infinitesimally small anti-gravitational ovoids, Jaska and Sarka entered the secret exit dome, side by-side.

On the breast and back of each showed the yellow stars of the Gens of Dalis. There was no hiding their ident.i.ty otherwise, and if any of the Gens saw them, both would be immediately recognized--for Jaska had commanded the Gens, and Sarka was the world's greatest scientist known to every human being. But they planned on carrying out their investigations by stealth.

"Father," said Sarka, "when the inner door is closed upon us, you have but to press the b.u.t.ton to the right of the door. Press it when the light beside it glows red, which will indicate that we have willed ourselves to go to a certain destination!"

The inner door closed upon Sarka and Jaska, and, hand in hand, side by side, their bodies glowing with knowledge of warm, sympathetic contact, they waited for a miracle which had never before been attempted.

"Are you afraid, beloved?" queried Sarka.

"When I am with you," she said softly, "I have no fear."

"Then face the outer door, and will to go wherever I will to take you!"

Side by side, hand-in-hand still, they faced the outer door, and Sarka willed:

"Let us appear together in a deserted spot, within sight but unseen, of the Moon crater from which those aircars were sent against us!"

A sudden blur, a cessation of all knowledge, and then....

Sarka and Jaska stood side by side in a desolate expanse surrounded by bleak and appalling mountains of grotesque shape, in a light that was weirdly, awesomely blue. Their feet were invisible, deeply rooted in some soft, fine material which looked like snow.

After a swift glance around to see if anything lived or moved in this awful desolation, Sarka stooped and dipped up some of the fine stuff with his fingers, touched it to his lips.

The material seemed to be fine blue ashes and on his tongue it had a soapy savor. He peered at Jaska, whose eyes were glowing with excitement, whose lips were parted with antic.i.p.ation, and instantly he opened a mental conversation with her.

"We must speak with each other telepathically, but do not speak with me until I have explained to you how to mask your thoughts from all persons save the one with whom you hold converse! First, I love you!

Second, let us see if, searching the sky, we can find the Earth!"

In a few brief, highly technical words, Sarka told his beloved how to talk with him in the manner which he had never before explained to her. They had used telepathy before, countless times, but they had not cared who heard--while now secrecy in all things was the prime essential for success, even for life.

When he had told her, and she replied, "I understand perfectly, and it seems quite easy," they turned and surveyed the heavens, out of which, by this new miracle of the secret exit dome, they had dropped to the face of the Moon.

Away across the s.p.a.ce between worlds, its transfiguration plainly visible to the two, they could make out and identify the world from which they had come. Save that they knew themselves standing on the Moon, they would have thought as far as appearances went, that the place where they had come was the Moon, many times enlarged. It seemed incredible that they had come so far in the twinkling of an eye; but that they had was proved by the fact of their physical presence.

"Look, Jaska!" said Sarka suddenly. "See how our Earth glows, as though it were afire inside!"

They stared at the great circular yellowish flame that he pointed out, and Sarka, always the scientist whose science was one of exactness, tried to estimate just where, on the Earth's surface, the glow was.

"Jaska," he said again, "that glow comes out of the heart of the Gens area which Dalis ruled! And no one lives there, since Dalis' Gens flew out to do battle! That's why we did not know of it before we left! That glow, somehow, beloved, is the cause of the outward-from-the-Earth journey of the Moon! First we must locate the Moon-source of the glow, and render it incapable of further forcing itself away! For do you realize that, unless we do so, we will never again see home?"

Jaska said nothing, but her eyes were troubled for a moment. Then she smiled again.

"What care I if I become a prisoner on the Moon, if you are with me?"

Sarka was just now realizing the wonder of this raven-haired woman whom, knowing her for half a century as he had, he had just known so little after all.

"If we seem in danger of discovery, Jaska," he said to her, "drop down instantly into the ashes, for if we are discovered by Dalis...."

He left it there and, with a deep intake of breath, started away for the nearest and highest hill. They desired to walk, yet found walking almost impossible, as they could not keep their feet on the ground save by the exercise of a really incredible effort of will. So, despairing of keeping their feet in contact with the ashes, they flew just above them, heading for the nearest weird-looking ridge.

In the strange light, which was oddly like moonlight in some painted desert of Earth, shapes were distorted and somehow menacing, colors were raw, almost bleeding--and distances that seemed but a step required hours to traverse.

Ever and anon, as they traveled they looked back up at the Earth which was their home. It still was visible, though plainly smaller with distance, and for a time Sarka's heart misgave him; but he only clasped tighter the hand of Jaska and moved on.

They were just at the base of the first hill, which had now become a mountain of gloomy, forbidding aspect, when the first sound they had heard on the moon came to them. A sound that was a commingling of the laughter of Dalis, the barking of jackals of the olden times, the humming of a million Beryls revolving at top speed, and a strident buzzing such as neither had ever heard.

Had they been discovered? Was the sound a warning? They could not know; but as they stared at the crest of the hill, two long, snaky, waving things appeared above the crest, undulating, waving to and fro, as though questing for something. They crouched low in the white ashes at the base of the mountain, and waited, scarcely breathing.

CHAPTER XIII

_The Lunar Cubes_

For a long time Sarka and Jaska remained still, like sentinels, listening to the strange discord which seemed to emanate from behind the hill at whose base they crouched.