"Never," said Calhoun politely. "If you're not hurt, suppose you get in the car? I'm as anxious as you are to find out what's happened. I'm Med Service."
* * * * *
Allison moved toward the car.
"Med Service, eh? I don't think much of the Med Service! You people try to meddle in things that are none of your business!"
Calhoun did not answer. The muddy man, clutching the attache case tightly, waded through the olive-green plants to the car and climbed in. Murgatroyd said cordially, "Chee-chee!" but Allison viewed him with distaste.
"What's this?"
"He's Murgatroyd," said Calhoun. "He's a tormal. He's Med service personnel."
"I don't like beasts," said Allison coldly.
"He's much more important to me than you are," said Calhoun, "if the matter should come to a test."
Allison stared at him as if expecting him to cringe. Calhoun did not. Allison showed every sign of being an important man who expected his importance to be recognized and catered to. When Calhoun stirred impatiently he got into the car and growled a little. Calhoun took his place. The ground-car hummed. It rose on the six columns of air which took the place of wheels and slid across the field of dark-green plants, leaving the parachute deflated across a number of rows, and a trail of crushed-down plants where it had moved.
It reached the highway again. Calhoun ran the car up on the highway's shoulder, and then suddenly checked. He'd noticed something.
He stopped the car and got out. Where the ploughed field ended, and before the coated surface of the highway began, there was a space where on another world one would expect to see green grass.
On this planet grass did not grow; but there would normally be some sort of self-planted vegetation where there was soil and sunshine and moisture. There had been such vegetation here, but now there was only a thin, repellent mass of slimy and decaying foliage. Calhoun bent down to it.
It had a sour, faintly astringent smell of decay. These were the ground-cover plants of Maya of which Calhoun had read. They had motile stems, leaves and flowers, and they had cannibalistic tendencies. They were the local weeds which made it impossible to grow grain for human use upon this world.
And they were dead.
Calhoun straightened up and returned to the car. Plants like this were wilted at the base of the spaceport building, and on another place where there should have been sward. Calhoun had seen a large dead member of the genus in a florist's, that had been growing in a cage before it died. There was a singular coincidence here: humans ran away from something, and something caused the death of a particular genus of cannibal weeds.
It did not exactly add up to anything in particular, and certainly wasn't evidence for anything at all. But Calhoun drove on in a vaguely puzzled mood. The germ of a guess was forming in his mind. He couldn't pretend to himself that it was likely, but it was surely no more unlikely than most of a million human beings abandoning their homes at a moment's notice.
III
They came to the turnoff for a town called Tenochitlan, some forty miles from Maya City. Calhoun swung off the highway to go through it.
Whoever had chosen the name Maya for this planet had been interested in the legends of Yucatan, back on Earth. There were many instances of such hobbies in a Med Ship's list of ports of call. Calhoun touched ground regularly on planets that had been named for countries and towns when men first roamed the stars, and nostalgically christened their discoveries with names suggested by homesickness. There was a Tralee, and a Dorset, and an Eire. Colonists not infrequently took their world's given name as a pattern and chose related names for seas and peninsulas and mountain chains. On Texia the landing-grid rose near a town called Corral and the principal meat-packing settlement was named Roundup.
Whatever the name Tenochitlan would have suggested, though, was denied by the town itself. It was small, with a pleasing local type of architecture. There were shops and some factories, and many strictly private homes, some clustered close together and others in the middles of considerable gardens. In those gardens also there was wilt and decay among the cannibal plants. There was no grass, because the plants prevented it, but now the motile plants themselves were dead. Except for the one class of killed growing things, however, vegetation was luxuriant.
But the little city was deserted. Its streets were empty, its houses untenanted. Some houses were apparently locked up here, though, and Calhoun saw three or four shops whose stock in trade had been covered over before the owners departed. He guessed that either this town had been warned earlier than the spaceport city, or else they knew they had time to get in motion before the highways were filled with the cars from the west.
Allison looked at the houses with keen, evaluating eyes. He did not seem to notice the absence of people. When Calhoun swung back on the great road beyond the little city, Allison regarded the endless fields of dark-green plants with much the same sort of interest.
"Interesting," he said abruptly when Tenochitlan fell behind and dwindled to a speck. "Very interesting! I'm interested in land. Real property, that's my business. I've a land-owning corporation on Thanet Three. I've some holdings on Dorset, too, and elsewhere. It just occurred to me: what's all this land and the cities worth, with the people all run away?"
"What," asked Calhoun, "are the people worth who've run?"
Allison paid no attention. He looked shrewd. Thoughtful.
"I came here to buy land," he said. "I'd arranged to buy some hundreds of square miles. I'd buy more if the price were right. But—as things are, it looks like the price of land ought to go down quite a bit. Quite a bit!"
"It depends," said Calhoun, "on whether there's anybody left alive to sell it to you, and what sort of thing has happened."
Allison looked at him sharply.
"Ridiculous!" he said authoritatively. "There's no question of their being alive!"
"They thought there might be," observed Calhoun. "That's why they ran away. They hoped they'd be safe where they ran to. I hope they are."
Allison ignored the comment. His eyes remained intent and shrewd. He was not bewildered by the flight of the people of Maya. His mind was busy with contemplation of that flight from the standpoint of a man of business.
* * * * *
The car went racing onward. The endless fields of dark green rushed past to the rear. The highway was deserted, just three strips of surfaced road, mathematically straight, going on to the horizon. They went on by tens and scores of miles, each strip wide enough to allow four ground-cars to run side by side. The highway was intended to allow all the produce of all these fields to be taken to market or a processing plant at the highest possible speed and in any imaginable quantity. The same roads had allowed the cities to be deserted instantly the warning—whatever the warning was—arrived.
Fifty miles beyond Tenochitlan there was a mile-long strip of sheds containing agricultural machinery for crop culture and trucks to carry the crops to market. There was no sign of life about the machinery, nor in a further hour's run to westward.
Then there was a city visible to the left. But it was not served by this particular highway, but another. There was no sign of any movement in its streets. It moved along the horizon to the left and rear. Presently it disappeared.
Half an hour later still, Murgatroyd said:
"Chee!"
He stirred uneasily. A moment later he said "Chee!" again.
Calhoun turned his eyes from the road. Murgatroyd looked unhappy. Calhoun ran his hand over the tormal's furry body. Murgatroyd pressed against him. The car raced on. Murgatroyd whimpered a