"Press the crystal in your hand," Ellerbee said to Baker. "Direct your attention toward Sam Atkins."

Each of them had a cube of the same crystal. It was like a party line.

Fenwick pressed his only slightly. He had learned it didn't take much.

He saw Baker hesitate, then purse his lips as if in utter disgust, and follow instructions.

In a moment the image of Sam Atkins appeared before them. Regardless of their position, the image gave the illusion of standing about four feet in front of them.

"Good afternoon, Dr. Baker," Sam Atkins said.

Fenwick thought Baker was going to collapse.

The director just stood for a moment, like a creature that had been pole-axed. Then his color began to deepen and he turned with robot stiffness. "Did you men hear anything? Fenwick ... did you hear ... did you see?"

"Sure," said Fenwick, grinning broadly. "Sam Atkins said good afternoon to you. It would be polite if you answered him back."

The image of Sam Atkins was still before them. He, too, was grinning broadly. The grins infuriated Baker.

"Mr. Atkins," said Baker.

"Yes, Dr. Baker," said Sam Atkins.

"If you hear me, wave your hands. I will observe you through the field gla.s.ses."

"The field gla.s.ses won't be necessary."

Both the image before them, and the distant figure on the knoll were seen to wave arms and gyrate simultaneously. For good measure, Sam Atkins turned a cartwheel.

Baker seemed to have partly recovered. "There seems to be a very remarkable effect present here," he said cautiously.

"Dr. Baker," Jim Ellerbee spoke earnestly, "I know you're skeptical. You don't think the crystals do what I say they do. Even though you see it with your own eyes you doubt that it is happening. I will do anything possible to test this device to your satisfaction. Name the test that will dispel your doubts and we will perform it!"

"It's not entirely a question of demonstration, Mr. Ellerbee," said Baker. "There are the theoretical considerations as well. The mathematics you have submitted in support of your claim are not, to put it mildly, sound."

"I know. Sam keeps telling me that. He says we need an entirely new math to handle it. Maybe we'll get around to that. But the important thing is that we've got a working device."

"Your mathematical basis _must_ be sound!" Baker's fervor returned.

Fenwick felt a sudden surge of pity for the director.

The demonstration was repeated a dozen times more. Fenwick went over on Sam Atkins' hill. He and Baker conversed privately.

[Ill.u.s.tration: ... _"Presence," with the crystals, was not a physical thing_ ...]

"Do you see it yet?" Fenwick asked.

"No, I'm afraid I don't!" Baker was snappish. "This is one of the most devilish things I've ever come across!"

"You don't think it's working the way Jim and Sam say it is?"

"Of course not. The thing is utterly impossible! I am convinced a hypnotic condition is involved, but I must admit I don't see how."

"You may figure it out when you go through Ellerbee's lab."

Baker was obviously shaken. He spoke in subdued tones as Ellerbee started the tour of the crystal lab again. Baker's eyes took in everything. As the tour progressed he seemed to devour each new item with frenzied intensity. He inspected the crystals through a microscope.

He checked the measurements of the thickness of the growing crystal layers.

The rain began while they were in the crystal lab. It beat furiously on the roof of the laboratory building, but Baker seemed scarcely aware that it was taking place. His eyes sought out every minute feature of the building. Fenwick was sure he was finding nothing to confirm his belief that the communicator crystals were a hoax.

Fenwick hadn't realized it before, but he recognized now that it would be a terrific blow to Baker if he couldn't prove the existence of a hoax.

Proof that the communicator crystals were all they were supposed to be would be a direct frontal attack on the sacred Index. It would blast a hole in Baker's conviction that nothing of value could come from the crackpot fringe. And, not least of all, it would require Baker to issue a research grant to Clearwater College.

What else it might do to Baker, Fenwick could only guess, but he felt certain Bill Baker would never be the same man again.

As it grew darker, Baker looked up from the microscope through which he had been peering. He glanced at the windows and the drenched countryside beyond. "It's been raining," he said.

Mary Ellerbee had already antic.i.p.ated that the visitors would be staying the night. She had the spare room ready for Baker and Fenwick before dinner. While they ate in the big farmhouse kitchen, Ellerbee explained.

"It would be crazy to try to get down to the highway tonight. The county's been promising us a new road for five years, but you see what we've got. Even the oldest citizen wouldn't tackle it in weather like this, unless it was an emergency. You put up for the night with us.

You'll get home just as fast by leaving in the morning, after the storm clears. And it will be a lot more pleasant than spending the night stuck in the mud somewhere--or worse."

Baker seemed to accept the invitation as he ate without comment. To Fenwick he appeared stunned by the events of the day, by his inability to find a hoax in connection with the communicator crystals.

It was only when Baker and Fenwick were alone in the upstairs bedroom that Baker seemed to stir out of his state of shock.

"This is ridiculous, Fenwick!" he said. "I don't know what I'm doing here. I can't possibly stay in this place tonight. I've got people to see this evening, and appointments early in the morning."

"It's coming down like cats and dogs again," said Fenwick. "You saw the road coming in. It's a hog wallow by now. Your chance of getting through would be almost zero."

"It's a chance I have to take," Baker insisted. He started for the door.

"_You_ don't have to take it, of course."

"I'm not going to!" said Fenwick.

"But I must!"

Fenwick followed him downstairs, still trying to persuade him of the foolishness of driving back tonight. When Ellerbee heard of it he seemed appalled.

"It's impossible, Dr. Baker! I wouldn't have suggested your not returning if there were any chance of getting through. I a.s.sure you there isn't."

"Nevertheless I must try. Dr. Fenwick will remain, and I will come back tomorrow afternoon to complete our investigation. There are important things I must attend to before then, however."

Fenwick had the sudden feeling that Baker was in a flight of panic. His words had an aimless stream-of-consciousness quality that contrasted sharply with his usually precise speech. Fenwick was certain there was nothing sufficiently important that it demanded his attention on a night like this. He could have telephoned his family and had his wife cancel any appointments.

No, Fenwick thought, there was nothing Baker had to go _to_; rather, he was running _from_. He was running in panicky fear from his failure to pin down the hoax in the crystals. He was running, Fenwick thought, from the fear that there might be no hoax.