It was two weeks to a day when the four on the earth, after having seen very little of each other in the meanwhile, got together for the purpose of finishing their "revelation" to the Sanusians.

"Mr. Van Emmon and I," stated Billie coolly, as they put on their bracelets, "have been trying to decide upon the best way of telling them how to obtain fire."

Neither Smith nor the doctor showed that he noticed her "Mr. Van Emmon."
Evidently the two were still unreconciled.

"I argue," remarked the geologist, "that the simplest method will be a chemical one. There's lots of ways to produce fire spontaneously, with chemicals; and this woman Rolla could do it easily."

Billie indulged in a small, superior smile. "He forgets that all these chemical methods require PURE chemicals. And you don't find them pure in the natural state. You've got to have fire to reduce them with."

"What's your proposition, then?" from the doctor.

"Optics!" enthusiastically. She produced a large magnifying-glass from her pocket. "All we have to do is to show Dulnop—he's something of a mineralogist—how to grind and polish a piece of crystal into this shape!"

Van Emmon groaned. "Marvelous! Say, if you knew how infernally hard it is to find even a small piece of crystal, you'd never propose such a thing! Why, it would take years—Mrs. Van Emmon!"

Smith also shook his head. "Neither of you has the right idea. The easiest way, under the circumstances, would be an electrical one."

He paused, frowning hard; then vetoed his own plan. "Thunder; I'm always speaking first and thinking afterward. I never used to do it," accusingly, "until I got in with you folks. Anyhow, electricity won't do; you've got to have practically pure elements for that, too."

"Guess it's up to you, doc," said Billie. And they all looked respectfully toward their host.

He laughed. "You three will never learn anything. You'll continue to think that I'm a regular wonder about these things, but you never notice that I merely stay still and let you commit yourselves first before I say anything. All I have to do is select the one idea remaining after you've disproved the rest. Nothing to it!"

He paused. "I'm afraid we're reduced to the spark method. It would take too long to procure materials pure enough for any other plan. Friction is out of the question for such people; they haven't the patience. Suppose we go ahead on the flint-and-spark basis."

They went at once into the familiar trance state. Nightfall was approaching on the part of Sanus in which they were interested. Smith and Van Emmon came upon Dulnop and Corrus as they were talking together. The herdsman was saying:

"Lad, my heart is heavy this night." Much of his usual vigor was absent. "When I were passing Cunora's field this day, some of the masters came and drove me over to her side. I tried to get away, and one threatened to kill. I fear me, lad, they intend to force us to marry!"

"What!" fiercely, from the younger.

Corrus laid a hand upon his arm. "Nay, Dulnop; fear not. I have no feeling for thy Cunora; I may marry her, but as for fathering her children—no!"

"Suppose," through set teeth, "suppose They should threaten to kill thee?"

"I should rather die, Dulnop, than be untrue to Rolla!"

The younger man bounded to his feet. "Spoken like a man! And I tell thee, neither shall I have aught to do with Rolla! Rather death than dishonor!"

Next moment silence fell between them; and then Van Emmon and Smith noted that both men had been bluffing in what they had said. For, sitting apart in the growing darkness, each was plainly in terror of the morrow. Presently Corrus spoke in a low tone:

"All the same, Dulnop, it were well for me and thee if the secret of the flowing blossom were given us this night. I"—he paused, abashed—"I am not so sure of myself, Dulnop, when I hear Their accursed buzzing. I fear—I am afraid I might give in!"

At this Dulnop broke down, and fell to sobbing. Nothing could have told the investigators so well just how childlike the Sanusians really were. Corrus had all he could do to hold in himself.

"Mownoth!" he exclaimed, his eyes raised fervently. "If it be thy will to deliver us, give us the secret this night!"

Meanwhile, in Rolla's hut, a similar scene was going on under the doctor's projected eye. Cunora lost her nerve, and Rolls came near to doing the same in her efforts to comfort the other.

"They are heartless things!" Rolla exclaimed with such bitterness as her nature would permit. "They know not what love is: They with their drones and their egg-babes! What is family life to Them? Nothing!

"Somehow I feel that Their reign is nearly at an end, Cunora. Perhaps the great secret shall be given us to-night!"

The girl dried her tears. "Why say ye that, Rolla?"

"Because the time be ripe for it. Are not all our kind looking forward to it? Are we not all expecting and longing for it? Know we not that we shall, must, have what we all so earnestly desire?" It was striking, to hear this bit of modern psychology uttered by this primitive woman. "Let me hear no more of thy weeping! Ye shall not be made to wed Corrus!"

Nevertheless, at the speaking of her lover's name, the older woman's lips trembled despite themselves; and she said nothing further beyond a brief "Sleep well." After which the two women turned in, and shortly reached the drowsy point.

Thus it happened that Rolla, after a minute or two, once more aroused Cunora in great excitement, and after securely closing the entrance to the hut against all comers, proceeded to relate what she had seen. She finished:

"The seed of the flower can be grown in the heart of rotting wood!" And for hours afterward the two whispered excitedly in the darkness. It was hard to have to wait till dawn.

As for Corrus and Dulnop, they even went so far as to search the heaps of stone in the mineral yards, although neither really expected to find what they sought.

But the four on the earth, not being able to do anything further until morning, proceeded to make themselves at home in the doctor's house. Smith and the doctor slept together, likewise Billie and Mrs. Kinney; Van Emmon occupied the guest-room in lonely grandeur. When he came down to breakfast he said he had dreamed that he was Corrus, and that he had burned himself on a blazing cow.

Again in the trance state, the four found that Rolla and Cunora, after reaching an understanding with Corrus and Dulnop, had already left their huts in search of the required stone. Five bees accompanied them. Within a few minutes however, Corrus and Dulnop set out together in the opposite direction, as agreed upon; and shortly the guards were withdrawn. This meant that the holiday was officially sanctioned, so long as the two couples kept apart; but if they were to join forces afterward, and be caught in the act, they would be severely punished. Such was bee efficiency—and sentiment.

The doctor had impressed Rolla with the fact that she would find the desired stone in a mountainous country. Cunora, however, was for examining every rock she came to; Rolla was continually passing judgment upon some specimen.

"Nay," said she, for the hundredth time. "'Tis a very bright stone we seek, very small and very shiny, like sunlight on the water. I shall know it when I see it, and I shall see it not until we reach the mountains."

Soon Cunora's impatience wore off, and the two concentrated upon making time. By midday they were well into the hills, following the course of a very dry creek; and now they kept a sharp lookout at every step.

Van Emmon and Smith had similarly impressed Corrus and Dulnop with the result that there was no loss of time in the beginning. The two men reached the hills on their side of the valley an hour before the women reached theirs.

And thus the search began, the strangest search, beyond a doubt, within the history of the universe. It was not like the work of some of earth's prehistoric men, who already knew fire and were merely looking up fresh materials; it was a quest in which an idea, an idea given in a vision, was the sole driving force. The most curious part of the matter was that these people were mentally incapable of conceiving that there was intelligence at work upon them from another world, or even that there was another world.

"Ye saw the stars last night?" Corrus spoke to Dulnop. "Well, 'tis just such stars as shall awaken the seed of the flower. Ye shall see!"

Both knew exactly what to look for: the brassy, regularly cut crystals with the black stripings, such as has led countless men to go through untold hardships in the belief that they had found gold. In fact, iron pyrites is often called "fool gold," so deceptive is its glitter.

Yet, it was just the thing for the purpose. Flint they already had, large quantities of it; practically all their tools, such as axes and knives, were made of it. Struck against iron pyrites, a larger, fatter, hotter spark could be obtained than with any other natural combination.

It was Dulnop's luck to see the outcropping. He found the mineral exposed to plain view, a few feet above the bottom of the ravine the two were ascending. With a shout of triumph he leaped upon the rock.

"Here, Corrus!" he yelled, dancing like mad. "Here is the gift of the gods!"

The older man didn't attempt to hide his delight. He grabbed his companion and hugged him until his ribs began to crack. Then, with a single blow from his huge club, the herdsman knocked the specimen clear of the slate in which it was set. Such was their excitement, neither dreamed of marking the place in any way.

First satisfying themselves that the pyrites really could produce "stars" from the flint, the two hurried down-stream, in search of the right kind of wood. In half an hour Corrus came across a dead, worm- eaten tree, from which he nonchalantly broke off a limb as big as his leg. The interior was filled with a dry, stringy rot, just the right thing for making a spark "live."

Then came a real difficulty. It will be better appreciated when the men's childish nature is borne in mind. Their patience was terribly strained in their attempts to make the sparks fly into the tinder. Again and again one of them would throw the rocks angrily to the ground, fairly snarling with exasperation.

However, the other would immediately take them up and try again. Neither man had a tenth the deftness that is common to adults on the earth. In size and strength alone they were men; otherwise—it cannot too often be repeated—they were mere children. All told, it was over two hours before the punk began to smolder.

"By Mownoth!" swore the herdsman, staring reverently at the smoke. "We have done a miracle, Dulnop—ye and I! Be ye sure this is no dream?"

Quite in human fashion, Dulnop seriously reached out and pinched the herdsman's tremendous arm. Corrus winced, but was too well pleased with the result to take revenge, although the nature of these men was such as to call for it.

"It be no dream!" he declared, still awestruck.

"Nay," agreed Dulnop. "And now—to make the flower grow!"

It was Corrus's lungs which really did the work. His prodigious chest was better than a small pair of bellows, and he blew just as he had been told in the vision. Presently a small flame appeared in the tinder, and leaped eagerly upward. Both men jumped back, and for lack of enough air the flame went out.

"Never mind!" exclaimed Dulnop at Corrus's crestfallen look. "I remember that we must be ready with leaves, and the like, as soon as the blossom appears. Blow, ye great windmaker, and I shall feed the flower!"

And thus it came about that two men of Sanus, for the first time in the history of the planet, looked upon fire itself. And when they had got it to burning well, each of them stared at his hands, and from his hands to the little heap of "flowers"; from hands to fire they looked, again and again; and then gazed at one another in awe.