But they built a s.p.a.ce-ship and came here. They went in orbit around Weald. They asked to trade for shiploads of food. They offered any price in heavy metals, gold, platinum, iridium, and so on. They talked from orbit by vision communicators. They could be seen to be blueskins. You can guess what happened!"

"Tell me," said Calhoun.

"We armed ships in a hurry," admitted the doctor, "We chased their s.p.a.ce-ship back to Dara. We hung in s.p.a.ce off the planet. We told them we'd blast their world from pole to pole if they ever dared take to s.p.a.ce again. We made them destroy their one ship, and we watched on visionscreens as it was done."

"But you gave them food?"

"No," said the doctor ashamedly. "They were blueskins."

"How bad was the famine?"

"Who knows? Any number may have starved! And we kept a squadron of armed ships in their skies for years. To keep them from spreading the plague, we said. And some of us believed it, probably!"

The doctor's tone was purest irony.

"Lately," he said, "there's been a move for economy in our government.

Simultaneously, we began to have a series of over-abundant crops. The government had to buy the excess grain to keep the price up. Retired patrol-ships--built to watch over Dara--were available for storage-s.p.a.ce. We filled them up with grain and sent them out into orbit. They're there now, hundreds of thousands or millions of tons of grain!"

"And Dara?"

The Doctor shrugged. He stood up.

"Our hatred of Dara," he said, again ironically, "has produced one thing. Roughly halfway between here and Dara there's a two-planet solar system, Orede. There's a usable planet there. It was proposed to build an outpost of Weald there, against blueskins. Cattle were landed to run wild and multiply and make a reason for colonists to settle there. They did, but n.o.body wants to move nearer to blueskins! So Orede stayed uninhabited until a hunting-party shooting wild cattle found an outcropping of heavy-metal ore. So now there's a mine there. And that's all. A few hundred men work the mine at fabulous wages. You may be asked to check on their health. But not Dara's!"

"I see," said Calhoun, frowning.

The doctor moved toward the Med Ship's exit-port.

"I answered your questions," he said grimly. "But if I talked to anyone else as I've done to you, I'd be lucky only to be driven into exile!"

"I shan't give you away," said Calhoun. He did not smile.

When the doctor had gone, Calhoun said deliberately;

"Murgatroyd, you should be grateful that you're a _tormal_ and not a man. There's nothing about being a _tormal_ to make you ashamed!"

Then he grimly changed his garments for the full-dress uniform of the Med Service. There was to be a banquet at which he would sit next to the planet's chief executive and hear innumerable speeches about the splendor of Weald. Calhoun had his own, strictly Med Service opinion of the planet's latest and most boasted-of achievement. It was a domed city in the polar regions, where n.o.body ever had to go outdoors. He was less than professionally enthusiastic about the moving streets, and much less approving of the dream-broadcasts which supplied hypnotic, sleep-inducing rhythms to anybody who chose to listen to them. The price was that while asleep one would hear high praise of commercial products, and one might believe them when awake.

But it was not Calhoun's function to criticize when it could be avoided.

Med Service had been badly managed in Sector Twelve. So at the banquet Calhoun made a brief and diplomatic address in which he temperately praised what could be praised, and did not mention anything else.

The chief executive followed him. As head of the government he paid some tribute to the Med Service. But then he reminded his hearers proudly of the high culture, splendid health, and remarkable prosperity of the planet since his political party took office. This, he said, was in spite of the need to be perpetually on guard against the greatest and most immediate danger to which any world in all the galaxy was exposed.

He referred to the blueskins, of course. He did not need to tell the people of Weald what vigilance, what constant watchfulness was necessary against that race of depraved and malevolent deviants from the norm of humanity. But Weald, he said with emotion, held aloft the torch of all that humanity held most dear, and defended not alone the lives of its people against blueskin contagion, but their n.o.ble heritage of ideals against Blueskin pollution.

When he sat down, Calhoun said very politely;

"It looks like some day it should be practical politics to urge the ma.s.sacre of all blueskins. Have you thought of that?"

The chief executive said comfortably;

"The idea's been proposed. It's good politics to urge it, but it would be foolish to carry it out. People vote against blueskins. Wipe them out, and where'd you be?"

Calhoun ground his teeth, quietly.

There were more speeches. Then a messenger, white-faced, arrived with a written note for the chief executive. He read it and pa.s.sed it to Calhoun. It was from the Ministry of Health. The s.p.a.ce-port reported that a ship had just broken out from overdrive within the Wealdian solar system. Its tape-transmitter had automatically signalled its arrival from the mining-planet Orede. But, having sent off its automatic signal, the ship lay dead in s.p.a.ce. It did not drive toward Weald. It did not respond to signals. It drifted like a derelict upon no course at all. It seemed ominous, and since it came from Orede--the planet nearest to Dara of the blueskins--the health ministry informed the planet's chief executive.

"It'll be blueskins," said that astute person, firmly. "They're next-door to Orede. That's who's done this. It wouldn't surprise me if they'd seeded Orede with their plague, and this ship came from there to give us warning!"

"There's no evidence for anything of the sort," protested Calhoun. "A ship simply came out of overdrive and didn't signal further. That's all."

"We'll see," said the chief executive ominously. "We'll go directly to the s.p.a.ceport."

Calhoun retrieved Murgatroyd who had been visiting with the wives of the higher-up officials. His small paunch distended with cakes and coffee and such delicacies as he'd been plied with. He was half comatose from over-feeding and over-petting, but he was glad to see Calhoun. At the s.p.a.ceport they discovered the situation remained unchanged.

A ship from Orede had come out of overdrive and lay dead in emptiness.

It did not answer calls. It did not move in s.p.a.ce. It floated eerily in no orbit around anything, going nowhere; doing nothing. And panic was the consequence.

It seemed to Calhoun that the official handling of the matter accounted for the terror that he could feel building up. The so-far-unexplained bit of news was on the air all over the planet Weald. There was n.o.body awake of all the world's population who did not believe that there was a new danger in the sky. n.o.body doubted that it came from blueskins. The treatment of the news was precisely calculated to keep alive the hatred of Weald for the inhabitants of the world Dara.

Calhoun put Murgatroyd into the Med Ship and went back to the s.p.a.ceport office. A small s.p.a.ce-boat, designed to inspect the circling grain-ships from time, was already aloft. The landing-grid had thrust it swiftly out most of the way. Now it droned and drove on st.u.r.dily toward the enigmatic ship.

Calhoun took no part in the agitated conferences among the officials and news reporters at the s.p.a.ce-port. But he listened to the talk about him.

As the investigating small ship drew nearer and nearer to the deathly-still cargo vessel, the guesses about the meaning of its breakout and following silence grew more and more wild. But, singularly, there was not one suggestion that the mystery might not be the work of blueskins. Blueskins were scapegoats for all the fears and all the uneasiness a perhaps over-civilized world developed.

Presently the investigating s.p.a.ce-boat reached the mystery ship and circled it, beaming queries. No answer. It reported the cargo-ship dark.

No lights shone anywhere on or in it. There were no induction-surges from even pulsing, idling engines. Delicately, the messenger-craft maneuvered until it touched the silent vessel. It reported that microphones detected no motion whatever inside.

"Let a volunteer go aboard," commanded the chief executive. "Have him report what he finds."

A pause. Then the solemn announcement of an intrepid volunteer's name, from far, far away. Calhoun listened, frowning darkly. This pompous heroism wouldn't be noticed in the Med Service. It would be routine behavior.

Suspenseful, second-by-second reports. The volunteer had rocketed himself across the emptiness between the two again-separated ships. He had opened the airlock from outside. He'd gone in. He'd closed the outer airlock door. He'd opened the inner. He reported.

The relayed report was almost incoherent, what with horror and incredulity and the feeling of doom that came upon the volunteer. The ship was a bulk-cargo ore-carrier, designed to run between Orede and Weald with cargoes of heavy-metal ores and a crew of no more than five men. There was no cargo in her holds now, though. Instead, there were men. They packed the ship. They filled the corridors. They had crawled into every cargo and other s.p.a.ce where a man could find room to push himself. There were hundreds of them. It was insanity. And it had been greater insanity still for the ship to have taken off with so preposterous a load of living creatures.

But they weren't living any longer. The air apparatus had been designed for a crew of five. It could purify the air for possibly twenty or more.

But there were hundreds of men in hiding as well as in plain view in the cargo-ship from Orede. There were many, many times more than her air apparatus and reserve tanks could possibly have serviced. They couldn't even have been fed during the journey from Orede to Weald!

But they hadn't starved. Air-scarcity killed them before the ship came out of overdrive.

A remarkable thing was that there was no written message in the ship's log which referred to its take-off. There was no memorandum of the taking on of such an impossible number of pa.s.sengers.

"The blueskins did it," said the chief executive of Weald. He was pale.

All about Calhoun men looked sick and shocked and terrified. "It was the blueskins! We'll have to teach them a lesson!" Then he turned to Calhoun. "The volunteer who went on that ship ... He'll have to stay there, won't he? He can't be brought back to Weald without bringing contagion ..."

Calhoun raged at him.