"I must have that recipe," the man said.

She nodded. "I'll see that you get it."

Kynes looked at Jessica, said: "The newcomer to Arrakis frequently underestimates the importance of water here. You are dealing, you see, with the Law of the Minimum."

She heard the testing quality in his voice, said, "Growth is limited by that necessity which is present in the least amount. And, naturally, the least favorable condition controls the growth rate."

"It's rare to find members of a Great House aware of planetological problems," Kynes said. "Water is the least favorable condition for life on Arrakis. And remember that growth itself can produce unfavorable conditions unless treated with extreme care."

Jessica sensed a hidden message in Kynes' words, but knew she was missing it. "Growth," she said. "Do you mean Arrakis can have an orderly cycle of water to sustain human life under more favorable conditions?"

"Impossible!" the water magnate barked.

Jessica turned her attention to Bewt. "Impossible?"

"Impossible on Arrakis," he said. "Don't listen to this dreamer. All the laboratory evidence is against him."

Kynes looked at Bewt, and Jessica noted that the other conversations around the table had stopped while people concentrated on this new interchange.

"Laboratory evidence tends to blind us to a very simple fact," Kynes said.

"That fact is this: we are dealing here with matters that originated and exist out-of-doors where plants and animals carry on their normal existence."

"Normal!" Bewt snorted. "Nothing about Arrakis is normal!"

"Quite the contrary," Kynes said. "Certain harmonies could be set up here along self-sustaining lines. You merely have to understand the limits of the planet and the pressures upon it."

"It'll never be done," Bewt said.

The Duke came to a sudden realization, placing the point where Kynes'

attitude had changed--it had been when Jessica had spoken of holding the conservatory plants in trust for Arrakis.

"What would it take to set up the self-sustaining system, Doctor Kynes?"

Leto asked.

"If we can get three per cent of the green plant element on Arrakis involved in forming carbon compounds as foodstuffs, we've started the cyclic system,"

Kynes said.

"Water's the only problem?" the Duke asked. He sensed Kynes' excitement, felt himself caught up in it.

"Water overshadows the other problems," Kynes said. "This planet has much oxygen without its usual concomitants--widespread plant life and large sources of free carbon dioxide from such phenomena as volcanoes. There are unusual chemical interchanges over large surf ace areas here."

"Do you have pilot projects?" the Duke asked.

"We've had a long time in which to build up the Tansley Effect--small-unit experiments on an amateur basis from which my science may now draw its working facts." Kynes said.

"There isn't enough water," Bewt said. "There just isn't enough water."

"Master Bewt is an expert on water," Kynes said. He smiled, turned back to his dinner.

The Duke gestured sharply down with his right hand, barked: "No! I want an answer! Is there enough water, Doctor Kynes?"

Kynes stared at his plate.

Jessica watched the play of emotion on his face. He masks himself well, she thought, but she had him registered now and read that he regretted his words.

"Is there enough water?" the Duke demanded.

"There . . . maybe," Kynes said.

He's faking uncertainty! Jessica thought.

With his deeper truthsense, Paul caught the underlying motive, had to use every ounce of his training to mask his excitement. There is enough water! But Kynes doesn't wish it to be known.

"Our planetologist has many interesting dreams," Bewt said. "He dreams with the Fremen--of prophecies and messiahs."

Chuckles sounded at odd places around the table Jessica marked them--the smuggler, the stillsuit manufacturer's daughter, Duncan Idaho, the woman with the mysterious escort service.

Tensions are oddly distributed here tonight, Jessica thought. There's too much going on of which I'm not aware. I'll have to develop new information sources.

The Duke passed his gaze from Kynes to Bewt to Jessica. He felt oddly let down, as though something vital had passed him here. "May be," he muttered.

Kynes spoke quickly: "Perhaps we should discuss this another time, my Lord.

There are so many--"

The planetologist broke off as an uniformed Atreides trooper hurried in through the service door, was passed by the guard and rushed to the Duke's side.

The man bent, whispering into Leto's ear.

Jessica recognized the capsign of Hawat's corps, fought down uneasiness. She addressed herself to the stillsuit manufacturer's feminine companion--a tiny, dark-haired woman with a doll face, a touch of epicanthic fold to the eyes.

"You've hardly touched your dinner, my dear," Jessica said. "May I order you something?"

The woman looked at the stillsuit manufacturer before answering, then: "I'm not very hungry."

Abruptly, the Duke stood up beside his trooper, spoke in a harsh tone of command: "Stay seated, everyone. You will have to forgive me, but a matter has arisen that requires my personal attention." He stepped aside. "Paul, take over as host for me, if you please."

Paul stood, wanting to ask why his father had to leave, knowing he had to play this with the grand manner. He moved around to his father's chair, sat down in it.

The Duke turned to the alcove where Halleck sat, said: "Gurney, please take Paul's place at table. We mustn't have an odd number here. When the dinner's over, I may want you to bring Paul to the field C.P. Wait for my call."

Halleck emerged from the alcove in dress uniform, his lumpy ugliness seeming out of place in the glittering finery. He leaned his baliset against the wall, crossed to the chair Paul had occupied, sat down.

"There's no need for alarm," the Duke said, "but I must ask that no one leave until our house guard says it's safe. You will be perfectly secure as long as you remain here, and we'll have this little trouble cleared up very shortly."