Considered detachedly, the odds were that there was again a food shortage on Dara; that blueskins, in desperation, had raided or were raiding or would raid the cattle herds of Orede for food to carry back to their home planet; that somehow the miners on Orede had found that they had blueskin neighbors, and died of the consequences of their terror. It was a risky guess to make on such evidence as Calhoun considered he had, but no other guess was possible.
If his guess were right, he was under some obligation to do exactly what he believed the girl considered her mission—to warn all blueskins that Weald would presently try to find them on Orede, when all hell must break loose upon Dara for punishment. But if there were men here, he couldn't leave a written warning for them in default of friendly contact.
They might not find it, and a search party of Wealdians might. All he could possibly do was try to make contact and give warning by such means as would leave no evidence behind that he'd done so. Weald would consider a warning sure proof of blueskin guilt.
It was not satisfactory to be limited to broadcasts which might or might not be picked up, and were unlikely to be acknowledged. But he settled down with the communicator to make the attempt.
He called first on a GC wave length and form. It was unlikely that blueskins would use general communication bands to keep in touch with each other, but it had to be tried. He broadcast, tuned as broadly as possible, and went up and down the GC spectrum, repeating his warning painstakingly and listening without hope for a reply.
He did find one spot on the dial where there was re-radiation of his message, as if from a tuned receiver. But he could not get a fix on it: nobody might be listening. He exhausted the normal communication pattern. Then he broadcast on old-fashioned amplitude modulation which a modern communicator would not pick up at all, and which therefore might be used by men in hiding.
He worked for a long time. Then he shrugged and gave it up. He'd repeated to absolute tedium the facts that any Darians—blueskins—on Orede ought to know. There'd been no answer. And it was all too likely that if he'd been received, that those who heard him took his message for a trick to discover if there were any hearers.
He clicked off at last and stood up, shaking his head. Suddenly the Med Ship seemed empty. Then he saw Murgatroyd staring vexedly at the exit port. The inner door of that small airlock was closed. The telltale light said the outer door was not locked. Someone had gone out quietly. The girl. Of course.
Calhoun said angrily, "How long ago, Murgatroyd?"
"Chee!" said Murgatroyd indignantly.
It wasn't an answer, but it showed that Murgatroyd was vexed that he'd been left behind. He and the girl were close friends, now. If she'd left Murgatroyd in the ship when he wanted to go with her, then she wasn't coming back.
Calhoun swore. He made certain she was not in the ship. He flipped the outside-speaker switch and said curtly into the microphone, "Coffee! Murgatroyd and I are having coffee. Will you come back, please?"
He repeated the call, and repeated it again. Multiplied as his voice was by the speakers, she should hear him within a mile. She did not appear. He went to a small and inconspicuous closet and armed himself. A Med Ship man was not ever expected to fight, but there were blast-rifles available for extreme emergency.
When he'd slung a power-pack over his shoulder and reached the airlock, there was still no sign of his late stowaway. He stood in the airlock door for long minutes, staring angrily about. Almost certainly she wouldn't be looking in the mountains for men of Dara come here for cattle. He used a pair of binoculars, first at low-magnification to search as wide an area down-valley as possible, and then at highest power to search the most likely routes.
He found a small, bobbing speck beyond a faraway hill crest. It was her head. It went down below the hilltop.
He snapped a command to Murgatroyd, and when the tormal was on the ground outside, he locked the port with that combination that nobody but a Med Ship man was at all likely to discover or use.
"She's an idiot!" he told Murgatroyd sourly. "Come along! We've got to be idiots too!"
He set out in pursuit.
There was blue sky overhead, as was inevitable on any oxygen-atmosphere planet of a Sol-type yellow sun. There were mountains, as is universal in planets whose surface rises and falls and folds and bends from the effects of weather or vulcanism. There were plants, as has come about wherever microorganisms have broken down rock to a state where it can nourish vegetation. And naturally there were animals.
There were even trees of severely practical design, and underbrush and ground-cover equivalent to grass. There was, in short, a perfectly predictable ecological system on Orede. The organic molecules involved in life here would be made up of the same elements in the same combinations as elsewhere where the same conditions of temperature and moisture and sunshine obtained.
It was a distinctly Earthlike world, as it could not help but be, and it was reasonable for cattle to thrive and increase here. Only men's minds kept it from being a place where humans would thrive, too.
But only Calhoun would have considered the splintered settlement a proof of that last.
The girl had a long start. Twice Calhoun came to places where she could have chosen either of two ways onward. Each time he had to determine which she'd followed. That cost time. Then the mountains abruptly ended and a vast undulating plain stretched away to the horizon. There were at least two large masses and many smaller clumps of what could only be animals gathered together. Cattle.
But here the girl was plainly in view. Calhoun increased his stride. He began to gain on her. She did not look behind.
Murgatroyd said "Chee!" in a complaining tone.
"I should have left you behind," agreed Calhoun dourly, "but there was and is a chance I won't get back. You'll have to keep on hiking."
He plodded on. His memory of the terrain around the mining settlement told him that there was no definite destination in the girl's mind. But she was in no such despair as to want deliberately to be lost. She'd guessed, Calhoun believed, that if there were Darians on the planet, they'd keep the landing-grid under observation.
If they saw her leave that area and could see that she was alone, they should intercept her to find out the meaning of the Med Ship's landing. Then she could identify herself as one of them and give them the terribly necessary warning of Weald's suspicions.
"But," said Calhoun sourly, "if she's right, they'll have seen me marching after her now, which spoils her scheme. And I'd like to help it, but the way she's going is too dangerous!"
He went down into one of the hollows of the uneven plain. He saw a clump of a dozen or so cattle a little distance away. The bull looked up and snorted. The cows regarded him truculently. Their air was not one of bovine tranquility.
He was up the farther hillside and out of sight before the bull worked himself up to a charge. Then Calhoun suddenly remembered one of the items in the data about cattle he'd looked into just the other day. He felt himself grow pale.
"Murgatroyd!" he said sharply. "We've got to catch up! Fast! Stay with me if you can, but—" he was jog-trotting as he spoke—"even if you get lost I have to hurry!"
He ran fifty paces and walked fifty paces. He ran fifty and walked fifty. He saw her, atop a rolling of the ground. She came to a full stop. He ran. He saw her turn to retrace her steps. He flung off the safety of the blast-rifle and let off a roaring blast at the ground for her to hear.