your nose!"

"Not a miracle, Perrie," Ormond said gently. "We must remember that. We are working here with natural forces which produce natural phenomena. Insufficiently understood phenomena, perhaps, but never miraculous ones. Now, how closely did this materialization appear to conform to the subjective group image we had decided on for our exercise?"

"Well, I could only see it, of course, Dr. Al. But as far as I saw it, it was exactly what we'd ... no, wait!" Perrie frowned, wrinkling her nose. "There was something added!" She giggled. "At least, I don't remember anyone saying we should imagine the sandwich wrapped in a paper napkin!"

Across the room, a woman's voice said breathlessly, "Oh! A green paper napkin, Perrie?"

Perrie looked around, surprised. "Yes, it was, Mavis."

Mavis Greenfield hesitated, said with a nervous little laugh, "I suppose I did that. I added a green napkin after we started the exercise." Her voice quavered for an instant. "I thought the image looked neater that way." She looked appealingly at the students around her. "This is really incredible, isn't it."

They gave her vague smiles. They were plainly still floating on a cloud of collective achievement—if they hadn't created that sandwich, there could have been nothing to see!

It seemed to Cavender that Dr. Ormond's face showed a flicker of strain when he heard Mavis' explanation. But he couldn't be sure because the expression—if it had been there—was smoothed away at once. Ormond cleared his throat, said firmly and somewhat chidingly. "No, not incredible, Mavis! Although—"

He turned on his smile. "My friends, I must admit that you have surprised me! Very pleasantly, of course. But what happened here is something I considered to be only a very remote possibility tonight. You are truly more advanced than I'd realized.

"For note this. If even one of you had been lagging behind the others, if there had been any unevenness in the concentration each gave to the exercise tonight, this materialization simply could not have occurred! And that fact forces me now to a very important decision."

He went over to the prop table, took the suitcase from it. "Mavis," he said gravely, "you may put away these other devices. We will have no further need for them in this group! Dexter, move the table to the center of the room for me, please."

He waited while his instructions were hastily carried out, then laid the suitcase on the table, drew up a chair and sat down. The buzz of excited conversation among the students hushed. They stared at him in anticipatory silence. It appeared that the evening's surprises were not yet over—and they were ready for anything now!

"There is a point," Dr. Ormond began in a solemn voice, riveting their eager attention on him, "a point in the orderly advance towards Total Insight at which further progress becomes greatly simplified and accelerated, because the student has now developed the capability to augment his personal efforts by the use of certain instruments."

Cavender thoughtfully reached inside his coat, brought out a cigarette case, opened it and slowly put a cigarette to his lips. About to flick on a lighter, he saw Ruben Jeffries watching him with an expression of disapproval from across the aisle. Jeffries shook his head, indicated the NO SMOKING sign on the wall. Cavender nodded, smiling a rueful apology for his absent-mindedness, and returned the cigarette to its case. He shoved his hands into his trousers pockets, slouched back in the chair.

"I have told you," Ormond was saying, "that the contributions many of you so generously made to the Institute were needed for and being absorbed by vital research. Tonight I had intended to give you a first inkling of what that research was accomplishing." He tapped the suitcase on the table before him. "In there is an instrument of the kind I have mentioned. The beneficial forces of the Cosmos are harnessed by it, flow through it. And I believe I can say that my efforts in recent months have produces the most effective such device ever seen...."

"Dr. Al," Mrs. Folsom interrupted firmly, "I think you should let them know how the instrument cured my heart condition."

Faces shifted toward her, then back to Dr. Al. The middle-aged majority of the students pricked their ears. For each of them, conscious of the years of increasingly uncertain health to come, Mrs. Folsom's words contained a personal implication, one that hit home. But in spite of the vindication of her claim to have seen a materialized ham sandwich, they weren't quite ready to trust her about this.

Dr. Ormond's face was grave.

"Eleanor," he said reprovingly, "that was letting the cat out of the bag, wasn't it? I hadn't intended to discuss that part of the matter just yet."

He hesitated, frowning, tapping the table top lightly with his knuckles. Mrs. Folsom looked unabashed. She had produced another sensation and knew it.

"Since it was mentioned," Ormond said with deliberation at last, "it would be unfair not to tell you, at least in brief, the facts to which Eleanor was alluding. Very well then—Eleanor has served during the past several weeks as the subject of certain experiments connected with this instrument. She reports that after her first use of it, her periodically recurring heart problem ceased to trouble her."

Mrs. Folsom smiled, nodded vigorously. "I have not," she announced, "had one single touch of pain or dizziness in all this time!"

"But one should, of course," Dr. Ormond added objectively, "hesitate to use the word 'cure' under such circumstances."

In the front row someone asked, "Dr. Al, will the instrument heal ... well, other physical conditions?"

Ormond looked at the speaker with dignity. "John, the instrument does, and is supposed to do, one thing. Providing, as I've said, that the student working with it has attained a certain minimum level of Insight, it greatly accelerates his progress towards Total Insight. Very greatly!

"Now, as I have implied before: as one approaches the goal of Total Insight, the ailments and diseases which commonly afflict humanity simply disappear. Unfortunately, I am not yet free to show you proof for this, although I have the proof and believe it will not be long before it can be revealed at least to the members of this group. For this reason, I have preferred not to say too much on the point.... Yes, Reuben? You have a question?"

"Two questions, Dr. Al," Reuben Jeffries said. "First, is it your opinion that our group has now reached the minimum level of Insight that makes it possible to work with those instruments?"

Ormond nodded emphatically. "Yes, it has. After tonight's occurrence there is no further question about that."

"Then," Jeffries said, "my second question is simply—when do we start?"

There was laughter, a scattering of applause. Ormond smiled, said, "An excellent question, Reuben! The answer is that a number of you will start immediately.

"A limited quantity of the instruments—fifteen, I believe—are available now on the premises, stored in my office. Within a few weeks I will have enough on hand to supply as many of you as wish to speed up their progress by this method. Since the group's contributions paid my research expenses, I cannot in justice ask more from you individually now than the actual cost in material and labor for each instrument. The figure ... I have it somewhere ... oh, yes!" Ormond pulled a notebook from his pocket, consulted it, looked up and said, mildly, "Twelve hundred dollars will be adequate, I think."

Cavender's lips twitched sardonically. Three or four of the group might have flinched inwardly at the price tag, but on the whole they were simply too well heeled to give such a detail another thought. Checkbooks were coming hurriedly into sight all around the lecture room. Reuben Jeffries, unfolding his, announced, "Dr. Al, I'm taking one of the fifteen."

Half the students