He stopped and looked around confusedly, evidently not quite sure at first what had become of me.

Mercer gave a shout of glee, and, to my great satisfaction, I heard it taken up by the crowd, mingled with murmurs of surprise and awe.

I stood quiet, and again my opponent charged me. I eluded him easily, and then for fully ten minutes I taunted and baited him this way, as a skillful toreador taunts his bull. The crowd now seemed to enjoy the affair hugely.

Finally I darted behind my adversary and, catching him by the shoulders, tripped him and laid him on his back on the ground A great roar of laughter went up from the onlookers.

The man was on his feet again in an instant, breathing heavily, for indeed he had nearly winded himself by his exertions. I ran over to Mercer.

"Go on," I said; "show them what you can do."

The commotion of this contest had drawn many other spectators about us now, but they kept a s.p.a.ce clear, pushing back hurriedly before our sudden rushes. At my words Mercer darted forward eagerly. His first move was to leap some twenty feet across the open s.p.a.ce. This smaller opponent seemed to give the Mercutian new courage.

He shouted exultantly and dashed at Mercer, who stood quietly waiting for him at the edge of the crowd.

Mercer's ideas evidently were different from mine, for as his adversary came within reach he stepped nimbly aside and hit him a vicious blow in the face. The man toppled over backward and lay still.

I ran over to where Mercer was bending over his fallen foe. As I came up he straightened and grinned at me. "Oh, shucks," he said disgustedly. "You can't fight up here--it's too easy."

CHAPTER XV.

THE MOUNTAIN CONCLAVE.

"It is reasonable," Miela said thoughtfully. "And that our women will help as you say--of that I am sure."

We were gathered in the living room after the evening meal, and I had given them my ideas of how we should start meeting the situation that confronted us. We had had no more trouble that day. After the encounter in the king's garden Mercer and I had followed the two girls swiftly home. We were not molested in the streets, although the people crowded about us wherever we went.

"Why did none of Baar's friends come to his rescue up there in the garden?" I asked Miela. "Surely there must have been many of them about."

"They were afraid, perhaps," she answered. "And they knew the people were against them. There might have been serious trouble; for that is not their way--to fight in the open."

Her face became very grave. "We must be very careful, my husband, that they, or Tao's men do not come here to harm you while you sleep."

"Why do you suppose they ever happened to bring me here in the first place?" Mercer wanted to know. "That's what I can't figure out."

"They knew not that Alan was here," said Miela. "I think they wanted to show you to our people as their captive--one of the earth-men."

Mercer chuckled.

"They didn't know what a good runner I was, or they'd never have taken a chance like that."

I told Miela then my plan for enlisting the sympathy of the women of the Light Country and for securing the active cooperation of the girls in ridding us of the disturbing presence of these Tao emissaries.

We planned that whatever we did should be in secret, so far as possible.

Mercer and I talked together, while Miela consulted with Lua at length.

I explained to Mercer that Tao might at any time send an expedition to invade the Light Country.

"How about that car we came from earth in?" he suggested. "He could sail over in that, couldn't he--if he should want to come over here?"

I knew that was not feasible. In the outer realms of s.p.a.ce the balancing attractions of the different heavenly bodies made it easy enough to head in any specified direction; but for travel over a planet's surface it was quite impractical. Its rise and fall could be perfectly governed; but when it was directed laterally the case was very different. Just where it would go could not be determined with enough exactness.

Miela turned back to us from her consultation with Lua.

"In the mountains, high up and far beyond the Valley of the Sun," she said, "lies a secret place known only to our women. Our mother says that she and I and Anina can spread the news among our virgins to gather there to-morrow at the time of sleep. Only to those we know we can trust will we speak--and they will have no men to whom to tell our plans. To-morrow they will gather up there in the clouds, among the crags, unseen by prying eyes. And you and our--our friend Ollie"--she smiled as she used the nickname by which he had asked her to call him--"you two we will take there by the method you have told us. We will arrange, up there in secret, what it is we are to do to help our world and yours."

This, in effect, was our immediate plan of procedure. Nearly all the next day Mercer and I stayed about the house, while the three women went through the city quietly, calling forth all those they could reach to our conclave in the mountains.

They returned some time after midday. Miela came first, alighting with a swift, triumphant swoop upon the roof where Mercer and I were sitting.

One glance at her face told me she had been successful.

"They will come, my husband," she announced. "And they are ready and eager, all of them, to do what they can."

Anina and Lua brought the same news. When we were all together again Mercer and I took them to the garden behind the house and showed them what we had done while they were away.

It was my plan to have the girls carry Mercer and me through the air with them. For that purpose we had built a platform of bamboo, which now lay ready in the garden.

Miela clapped her hands at sight of it. "That is perfect, my husband. No difficulty will there be in taking you with us now."

The platform was six feet wide by ten long. It rested upon a frame with two poles of bamboo some forty feet in length running lengthwise along its edges. These two poles thus projected in front and back of the platform fifteen feet each way. Running under them crosswise at intervals were other, shorter bamboo lengths which projected out the sides a few feet to form handles. There were ten of them on a side at intervals of four feet.

I found it difficult to realize the difference between night and day, since here on Mercury the light never changed. I longed now for that darkness of our own earth which would make it so much easier for us to conceal our movements. Miela relieved my mind on that score, however, by explaining that at nearly the same hour almost every one in the city fell asleep. The physical desire for sleep was, I learned, much stronger with the Mercutians than with us; and only by the drinking of a certain medicinal beverage could they ward it off.

It was after the evening meal, at a time which might have corresponded to an hour or so before midnight, that the selected eighteen girls began to arrive. Miela brought them into the living room with us until they were all together.

It was a curious gathering--this bevy of Mercutian maidens. They all seemed between the ages of sixteen and twenty-three--fragile, dainty little wisps of femininity, yet having a strength in their highly developed wing muscles that was truly surprising.

They were dressed in the characteristic costume I have described, with only a slight divergence of color or ornamentation. They were of only two types--jet black tresses, black eyes, and red-feathered wings like Miela; or the less vivid, more ethereal Anina--blue-eyed, golden-haired, with wing feathers of light blue.

When they had all arrived we went into the garden behind the house. In a moment more Mercer and I were seated side by side on the little bamboo platform. Miela and Anina took the center positions so that they would be near us. The other girls ranged themselves along the sides, each grasping one of the handles.

In another moment we were in the air. My first sensation was one of a sudden rushing forward and upward. The frail little craft swayed under me alarmingly, but I soon grew used to that. The flapping of those many pairs of huge wings so close was very loud; the wind of our swift forward flight whistled past my ears. Looking down over the side of the platform, between the bodies of two of the girls, I could see the city silently dropping away beneath us. Above there was nothing but the same dead gray sky, black in front, with occasional vivid lightning flashes and the rumble of distant thunder.

Underneath the storm cloud, far ahead, the jagged tops of a range of mountains projected above the horizon. As I watched they seemed slowly creeping up and forward as the horizon rolled back to meet them.

For half an hour or so we sped onward through the air. We were over the mountains now. Great jagged, naked peaks of shining metal towered above us, with that broken, utterly desolate country beneath. We swept continually upward, for the mountains rose steadily in broad serrated ranks before us.

Occasionally we would speed up a narrow defile, with the broken, tumbling cliffs rising abruptly over our heads, only to come out above a level plateau or across a canon a thousand feet deep or more.

The storm broke upon us. We entered a cloud that wrapped us in its wet mist and hid the mountains from our sight. The darkness of twilight settled down, lighted by flashes of lightning darting almost over our heads. The sharp cracks of thunder so close threatened to split my eardrums.

The wind increased in violence. The little platform trembled and swayed. I could see the girls struggling to hold it firm. At times we would drop abruptly straight down a hundred or two hundred feet, with a great fluttering of wings; but all the time I knew we were rising sharply.

Mercer and I clung tightly to the platform. We did not speak, and I think both of us were frightened. Certainly we were awed by the experience.