She awakened slowly, taking deeper and deeper breaths.
"I knew you'd find me," she whispered.
He looked back up the fissure. "It might have been kinder if I hadn't."
"Paul!"
"I lost the pack," he said. "It's buried under a hundred tons of sand . . . at least."
"Everything?"
"The spare water, the stilltent - everything that counts." He touched a pocket. "I still have the paracompass." He fumbled at the waist sash. "Knife and binoculars. We can get a good look around the place where we'll die."
In that instant, the sun lifted above the horizon somewhere to the left beyond the end of the fissure. Colors blinked in the sand out on the open desert. A chorus of birds held forth their songs from hidden places among the rocks.
But Jessica had eyes only for the despair in Paul's face. She edged her voice with scorn, said: "Is this the way you were taught?"
"Don't you understand?" he asked. "Everything we need to survive in this place is under that sand."
"You found me," she said, and now her voice was soft, reasonable.
Paul squatted back on his heels.
Presently, he looked up the fissure at the new slope, studying it, marking the looseness of the sand.
"If we could immobilize a small area of that slope and the upper face of a hole dug into the sand, we might be able to put down a shaft to the pack. Water might do it, but we don't have enough water for . . ." He broke off, then: "Foam."
Jessica held herself to stillness lest she disturb the hyper-functioning of his mind.
Paul looked out at the open dunes, searching with his nostrils as well as his eyes, finding the direction and then centering his attention on a darkened patch of sand below them.
"Spice," he said. "Its essence - highly alkaline. And I have the paracompass. Its power pack is acid-base."
Jessica sat up straight against the rock.
Paul ignored her, leaped to his feet, and was off down the wind-compacted surface that spilled from the end of the fissure to the desert's floor.
She watched the way he walked, breaking his stride - step . . . pause, step-step . . . slide . . . pause . . .
There was no rhythm to it that might tell a marauding worm something not of the desert moved here.
Paul reached the spice patch, shoveled a mound of it into a fold of his robe, returned to the fissure. He spilled the spice onto the sand in front of Jessica, squatted and began dismantling the paracompass, using the point of his knife. The compass face came off. He removed his sash, spread the compass parts on it, lifted out the power pack. The dial mechanism came out next, leaving an empty dished compartment in the instrument.
"You'll need water," Jessica said.
Paul took the catchtube from his neck, sucked up a mouthful, expelled it into the dished compartment.
If this fails, that's water wasted , Jessica thought. But it won't matter then, anyway .
With his knife, Paul cut open the power pack, spilled its crystals into the water. They foamed slightly, subsided.
Jessica's eyes caught motion above them. She looked up to see a line of hawks along the rim of the fissure. They perched there staring down at the open water.
Great Mother! she thought. They can sense water even at that distance!
Paul had the cover back on the paracompass, leaving off the reset button which gave a small hole into the liquid. Taking the reworked instrument in one hand, a handful of spice in the other, Paul went back up the fissure, studying the lay of the slope. His robe billowed gently without the sash to hold it. He waded part way up the slope, kicking off sand rivulets, spurts of dust.
Presently, he stopped, pressed a pinch of the spice into the paracompass, shook the instrument case.
Green foam boiled out of the hole where the reset button had been. Paul aimed it at the slope, spread a low dike there, began kicking away the sand beneath it, immobilizing the opened face with more foam.
Jessica moved to a position below him, called out: "May I help?"
"Come up and dig," he said. "We've about three meters to go. It's going to be a near thing." As he spoke, the foam stopped billowing from the instrument.
"Quickly," Paul said. "No telling how long this foam will hold the sand."
Jessica scrambled up beside Paul as he sifted another pinch of spice into the hole, shook the paracompass case. Again, foam boiled from it.
As Paul directed the foam barrier, Jessica dug with her hands, hurling the sand down the slope. "How deep?" she panted.
"About three meters," he said. "And I can only approximate the position. We may have to widen this hole." He moved a step aside, slipping in loose sand. "Slant your digging backward. Don't go straight down."
Jessica obeyed.
Slowly, the hole went down, reaching a level even with the floor of the basin and still no sign of the pack.
Could I have miscalculated? Paul asked himself. I'm the one that panicked originally and caused this mistake. Has that warped my ability?
He looked at the paracompass. Less than two ounces of the acid infusion remained.
Jessica straightened in the hole, rubbed a foam-stained hand across her cheek. Her eyes met Paul's.
"The upper face," Paul said. "Gently, now." He added another pinch of spice to the container, sent the foam boiling around Jessica's hands as she began cutting a vertical face in the upper slant of the hole. On the second pass, her hands encountered something hard. Slowly, she worked out a length of strap with a plastic buckle.
"Don't move any more of it," Paul said and his voice was almost a whisper.
"We're out of foam."