Urthona spoke out of lips puffed up by a blow from a spearshaft. "They might never have seen blacks before, but there are black tribes here. I brought in specimens of all the Earth races."

McKay said, slowly, "I wonder what they'd do to you if they knew you were responsible for their being here?"

Urthona turned pale. Anana laughed, and said, "I might tell them-when I learn how to speak their tongue."

"You wouldn't do that, would you?" Urthona said. He looked at her, then said,"Yes, you would. Well, just remember, I'm the only one who can get us-into my palace."

"If we ever find it," Anana said. "And if these savages don't eat us first."

She closed her eyes and went to sleep. It seemed like a minute later that she was roused by a kick in the ribs. It was the gray-haired woman in her panties, the chiefs woman, who'd taken a special dislike to Anana. Or was it so special? All the women seemed to loathe her. Perhaps, though, that was the way they treated all female captives.

Obviously, the women weren't going to teach her the language. She picked on an adolescent, a short muscular lad who was keeping an eye on her. Since he seemed to be fascinated by her, she would get him to initiate her into the tribal speech. It didn't take long to learn his name, which was Nurgo.

Nurgo was eager to teach her. He rode on a moosoid while she walked, but he told her the names of things and people she pointed out. By the end of the "day," when they stopped for another two-hour snooze, she knew fifty words, and she could construct simple questions and had memorized their answers.

Neither Urthona nor McKay were interested in linguistics. They walked side by side, talking in low tones, obviously discussing methods of escape.

When they resumed their march in the deepening twilight, the chief asked her to demonstrate the use of the Horn. She blew the sequence of notes which would open any "gate"-if there had been one around. After some initial failures, he mastered the trumpet and for a half-hour amused himself by blowing it. Then the shaman said something to him. Anana didn't know what it was. She guessed the shaman was pointing out that the sounds might attract the attention of enemies.

Sheepishly, he stuck the Horn into a saddlebag.

Amazingly, the woman with her jeans had so far not been curious about the heavy lump in the leg of the cloth. Since she had never seen this type of apparel before, she must think that all jeans were weighted in this fashion.

Near the end of the "night" the caravan stopped again. Guards were posted, and everybody went to sleep. The moosoid, however, stayed awake and chomped on tree branches. These were carried on the travois or on their backs. The supply was almost gone, which meant that men would have to forage for it. That is, find a grove or forest of walking plants, kill some, and strip off the branches.

At "noon" the following day the two mountains forming the pass to the sea seemed to be very close. But she knew that distance was deceiving here. It might take two more days before the pass was reached. Apparently the tribe knew how far away it was. The beasts wouldn't make it to the sea before they became weak with hunger.

Twenty of the men and some four adolescents rode out onto the plain. As fortune had it, the necessary food was advancing toward them. It was a square of trees which she estimated numbered about a thousand. The riders waited until it was a quarter of a mile from the channel. Then, holding lariats made of fiber, they rode out. Nearing the trees, they formed an Indian file. Like redskins circling a wagon train, they rode whooping around and around it.

The plants were about ten feet high and coniferous, shaped like Christmas trees with extraordinarily broad trunks which bulged out at the bottom. About two-thirds of the way up, eyes ringed the boles, and four very long and thin greenish tentacles extended from their centers. When the tribesmen got close, the whole unit stopped, and those on the perimeter turned on four barky legs to face outward.

Anana had noticed that a herd of wild moosoids had ignored them. There must be a reason for this. And as the men rode by, about twenty feet from the outguards, she saw why. Streams of heavy projectiles shot from holes in the trunks. Though a long way from the scene, she could hear the hissing of released air.

From much experience with these plants, the humans knew what the exact range of the darts were. They stayed just outside it, the riders upwind closer than those on the downwind side.

She deduced that they knew what the ammunition count for a tree was. They were shouting short words-undoubtedly numbers-as they rode by. Then the chief, who'd been sitting to one side and listening, yelled an order. This was passed on around the circle so that those out of hearing of his voice could be informed. The riders nearest him turned their beasts and headed toward the perimeter. Meanwhile, as if the plants were a well-trained army, those who'd discharged their missiles stepped backward into spaces afforded by the moving aside of the second rank.

It was evident that those behind them would take their places. But the riders stormed in, swung, and cast their lariats. Some of them missed. The majority caught and tightened around a branch or a tentacle. The mounts wheeled, the ropes stretched, the nooses closed, and the unlucky plants were jerked off their feet. The riders urged their beasts on until the trees had been dragged out of range of the missiles. The other end of the lariats were fastened to pegs stuck into the rear of the saddles. All but one held. This snapped, and the plant was left only ten feet from the square. No matter. It couldn't get up again.

The mounts halted, the riders jumped down and approached the fallen plants. Taking care to keep out of the way of the waving tentacles, they loosened the lariats and returned to their saddles.

Once more, the procedure was repeated. After that the riders ignored the upright trees. They took their flint or chert tools and chopped off the tentacles. Their animals, now safe from the darts-which she presumed were poisoned-attacked the helpless plants. They grabbed the tentacles between their teeth and jerked them loose. After this, while the moosoids were stripping a branch, their owners chopped away branches with flint or chert tools.

The entire tribe, men, women, children, swarmed around the victims and piled the severed branches upon travois or tied bundles of them to the backs of the beasts.

Later, when she'd learned some vocabulary, Anana asked the youth, Nurgo, if the missiles were poisoned. He nodded and grinned and said, "Yu, messt gwonaw dendert assessampt."

She wasn't sure whether the least word meant deadly or poison. But there was no doubt that it would be better not to be struck by the darts. After the plants had been stripped, the men carefully picked up the missiles. They were about four inches long, slim-bodied, with feathery construction of vegetable origin at one end and a needdle-point at the other. The point was smeared with a blue-greenish substance.

These were put into a rawhide bag or fixed at the ends of spearshafts.

After the work was done, the caravan resumed marching. Anana, looking back, saw half of the surviving plants ranged alongside the channel. From the bottom of each a thick greenish tube was extended into the water, which was being sucked up into these. The other half stood guard.

"You must have had a lot of fun designing those," Anana said to Urthona.

"It was more amusing designing them than watching them in action," her uncle said. "In fact, designing this world entertained me more than living on it. I got bored in less than four years and left it. But I have been back now and then during the past ten thousand years to renew my acquaintance with it."