When the long summer was ended by the first rain they resumed their journey. They took a supply of the orange corn and two of the mockers; the yellow one and its mate. The other mockers watched them leave, standing silent and solemn in front of their caves as though they feared they might never see their two fellows or the humans again.
The two mockers were pleasant company, riding on their shoulders and chattering any nonsense that came to mind. And sometimes saying things that were not at all nonsense, making Humbolt wonder if mockers could partly read human minds and dimly understand the meaning of some of the things they said.
They found a place where saltpeter was very thinly and erratically distributed. They sc.r.a.ped off all the films of it that were visible and procured a small amount. They completed their circuit and reached the foot of the long, steep slope of the Craigs without finding anything more.
It was an awesome climb that lay before them; up a grade so steep and barred with so many low ledges that when their legs refused to carry them farther they crawled. The heat was still very serious and there would be no water until they came to the spring beyond the mountain"s summit. A burning wind, born on the blazing floor of the chasm, followed them up the mountain all day. Their leather canteens were almost dry when night came and they were no more than a third of the way to the top.
The mockers had become silent as the elevation increased and when they stopped for the night Humbolt saw that they would never live to cross the mountain. They were breathing fast, their hearts racing, as they tried to extract enough oxygen from the thin air. They drank a few drops of water but they would not touch the corn he offered them.
The white mocker died at midmorning the next day as they stopped for a rest. The yellow one crawled feebly to her side and died a few minutes later.
"So that"s that," Humbolt said, looking down at them. "The only things on Ragnarok that ever trusted us and wanted to be our friends--and we killed them."
They drank the last of their water and went on. They made dry camp that night and dreams of cold streams of water tormented their exhausted sleep. The next day was a h.e.l.lish eternity in which they walked and fell and crawled and walked and fell again.
Barber weakened steadily, his breathing growing to a rattling panting.
He spoke once that afternoon, to try to smile with dry, swollen lips and say between his panting gasps, "It would be h.e.l.l--to have to die--so thirsty like this."
After that he fell with increasing frequency, each time slower and weaker in getting up again. Half a mile short of the summit he fell for the last time. He tried to get up, failed, and tried to crawl. He failed at that, too, and collapsed face down in the rocky soil.
Humbolt went to him and said between his own labored intakes of breath, "Wait, Dan--I"ll go on--bring you back water."
Barber raised himself with a great effort and looked up. "No use," he said. "My heart--too much----"
He fell forward again and that time he was very still, his desperate panting no more.
It seemed to Humbolt that it was half a lifetime later that he finally reached the spring and the cold, clear water. He drank, the most ecstatic pleasure he had ever experienced in his life. Then the pleasure drained away as he seemed to see Dan Barber trying to smile and seemed to hear him say, "It would be h.e.l.l--to have to die--so thirsty like this."
He rested for two days before he was in condition to continue on his way. He reached the plateau and saw that the woods goats had been migrating south for some time. On the second morning he climbed up a gentle roll in the plain and met three unicorns face to face.
They charged at once, squealing with antic.i.p.ation. Had he been equipped with an ordinary bow he would have been killed within seconds. But the automatic crossbow poured a rain of arrows into the faces of the unicorns that caused them to swing aside in pain and enraged astonishment. The moment they had swung enough to expose the area just behind their heads the arrows became fatal.
One unicorn escaped, three arrows bristling in its face. It watched him from a distance for a little while, squealing and shaking its head in baffled fury. Then it turned and disappeared over a swell in the plain, running like a deer.
He resumed his southward march, hurrying faster than before. The unicorn had headed north and that could be for but one purpose: to bring enough reinforcements to finish the job.
He reached the caves at night. No one was up but George Ord, working late in his combination workshop-laboratory.
George looked up at the sound of his entrance and saw that he was alone.
"So Dan didn"t make it?" he asked.
"The chasm got him," he answered. And then, wearily, "The chasm--we found the d.a.m.ned thing."
"The red stratum----"
"It was only iron stains."
"I made a little pilot smelter while you were gone," George said. "I was hoping the red stratum would be ore. The other prospecting parties--none of them found anything."
"We"ll try again next spring," he said. "We"ll find it somewhere, no matter how long it takes."
"Our time may not be so long. The observations show the sun to be farther south than ever."
"Then we"ll make double use of the time we do have. We"ll cut the hunting parties to the limit and send out more prospecting parties.
We"re going to have a ship to meet the Gerns again."
"Sometimes," George said, his black eyes studying him thoughtfully, "I think that"s all you live for, Bill: for the day when you can kill Gerns."
George said it as a statement of a fact, without censure, but Humbolt could not keep an edge of harshness out of his voice as he answered:
"For as long as I"m leader that"s all we"re all going to live for."
He followed the game south that fall, taking with him Bob Craig and young Anders. Hundreds of miles south of the caves they came to the lowlands; a land of much water and vegetation and vast herds of unicorns and woods goats. It was an exceedingly dangerous country, due to the concentration of unicorns and prowlers, and only the automatic crossbows combined with never ceasing vigilance enabled them to survive.
There they saw the crawlers; hideous things that crawled on multiple legs like three-ton centipedes, their mouths set with six mandibles and dripping a stinking saliva. The bite of a crawler was poisonous, instantly paralyzing even to a unicorn, though not instantly killing them. The crawlers ate their victims at once, however, ripping the helpless and still living flesh from its bones.
Although the unicorns feared the crawlers, the prowlers hated them with a fanatical intensity and made use of their superior quickness to kill every crawler they found; ripping at the crawler until the crawler, in an insanity of rage, bit itself and died of its own poison.
They had taken one of the powerful longbows with them, in addition to their crossbows, and they killed a crawler with it one day. As they did so a band of twenty prowlers came suddenly upon them.
Twenty prowlers, with the advantage of surprise at short range, could have slaughtered them. Instead, the prowlers continued on their way without as much as a challenging snarl.
"Now why," Bob Craig wondered, "did they do that?"
"They saw we had just killed a crawler," Humbolt said. "The crawlers are their enemies and I guess letting us live was their way of showing appreciation."
Their further explorations of the lowlands revealed no minerals--nothing but alluvial material of unknown depth--and there was no reason to stay longer except that return to the caves was impossible until spring came.
They built attack-proof shelters in the trees and settled down to wait out the winter.
They started north with the first wave of woods goats, nothing but lack of success to show for their months of time and effort.
When they were almost to the caves they came to the barren valley where the Gerns had herded the Rejects out of the cruisers and to the place where the stockade had been. It was a lonely place, the stockade walls fallen and scattered and the graves of Humbolt"s mother and all the others long since obliterated by the hooves of the unicorn legions.
Bitter memories were reawakened, tinged by the years with nostalgia, and the stockade was far behind them before the dark mood left him.
The orange corn was planted that spring and the number of prospecting parties was doubled.
The corn sprouted, grew feebly, and died before maturity. The prospecting parties returned one by one, each to report no success. He decided, that fall, that time was too precious to waste--they would have to use the alternate plan he had spoken of.
He went to George Ord and asked him if it would be possible to build a hypers.p.a.ce transmitter with the materials they had.
"It"s the one way we could have a chance to leave here without a ship of our own," he said. "By luring a Gern cruiser here and then taking it away from them."
George shook his head. "A hypers.p.a.ce transmitter _might_ be built, given enough years of time. But it would be useless without power. It would take a generator of such size that we"d have to melt down every gun, knife, axe, every piece of steel and iron we have. And then we"d be five hundred pounds short. On top of that, we"d have to have at least three hundred pounds more of copper for additional wire."