Ponse looked at the collection. "Was there anything else?" He slid the loaded clip from the pistol, held it in his hand. "If not, get dressed."

The invisible field let them loose.

"I don't see what there is to be surprised about," Ponse told them. "Hugh, you will remember that I told my scientists that I wanted to know how you got here. No miracles. I told them rather firmly. They understood that I would be most unhappy-and vexed-if the Protectorate's scientists could not solve it when they had so many hints, so much data. So they did. Probably. At least they were able to move this little fellow. He arrived today, which is why I sent for you. Now we will find out if it works backwards in time as well as forwards-and if the big apparatus works as well as the bench model. I understand it is not so much the amount of power-no atom-kernel bombs necessary -as the precise application of power. But we'll soon know." Hugh asked, "How will you know? We will know-if it works. But how will you know?"

"Oh, that. My scientists are clever, when they have incentive. One of them will explain it."

The scientists were called in, two Chosen and five servants. There was no introduction; Hugh found himself treated as impersonally as the little white mouse who still tried to meet his death on the floor. Hugh was required to take off his shirt and two servant-scientists taped a small package to Hugh's right shoulder. "What's that?" It seemed surprisingly heavy for its size.

The servants did not answer; the leading Chosen said, "You will be told. Come here. See this."

"This" turned out to be Hugh's former property, a U. S. Geodetic Survey map of James County. "Do you understand this? Or must we explain it?"

"I understand it." Hugh used the equals mode, the Chosen ignored it while continuing to speak in protocol mode, falling.

"Then you know that here is where you arrived."

Hugh agreed, as the man's finger covered the spot where Hugh's home had once stood. The Chosen nodded thoughtfully and added, "Do you understand the meaning of these marks?" He pointed to a tiny x-mark and very small figures beside it.

"Certainly. We call that a 'bench mark.' Exact location and altitude. It's a reference point for all the rest of the map."

"Excellent." The Chosen pointed to a similar mark at the summit of Mount James as shown by the map. "Now, tell us, if you know-but don't lie about it; it will not advantage you-how much error there would be, horizontally and vertically, between these two reference points."

Hugh thought about it, held up his thumb and forefinger about an inch apart. The Chosen blinked. "It would not have been that accurate in those primitive times. We assume that you are lying. Try again. Or admit that you don't know."

"And I suggest that you don't know what you are talking about. It would be at least that accurate." Hugh thought of telling him that he had bossed surveying parties in the Seabees and had done his own surveying when he was getting started as a contractor-and that while he did not know how accurate a geodetic survey was, he did know that enormously more accurate methods had been used in setting those bench marks than were ever used in the ordinary survey.

He decided that explanation would be wasted.

The Chosen looked at him, then glanced at Their Charity. The old man had been listening but his face showed nothing. "Very well. We will assume that the marks are accurate, each to the other. Which is fortunate, as this one is missing"-he pointed to the first one, near where Hugh's home had been- "whereas this one"-he indicated the summit of Mount James-"is still in place, in solid rock. Now search your memory and do not lie again, as it will matter to you... and it will matter to Their Charity, as a silly lie on your part could waste much effort and Their Charity would be much displeased, we are certain. Where, quite near this reference mark and the same height-certainly no higher!-is-was, I mean, in those primitive times-a flat, level place?"

Hugh thought about it. He knew exactly where that bench mark had been: in the cornerstone of the Southport Savings Bank. It was, or had been, a small brass plate let into the stone beside the larger dedication plate, about eighteen inches above the sidewalk at the northeast corner of the building. It had been placed there shortly after the Southport shopping center had been built. Hugh had often glanced at it in passing; it had always given him a warm feeling of stability to note a bench mark.

The bank had sided on a parking lot shared by the bank, a Safeway Supermarket, and a couple of other shops. "It is level and flat nif this way fnr a distance nf-" (I-Iiwh estimated the width of that ancient parking lot in feet, placed the figure in modern units.) "Or a little farther. That's just an estimate, not wholly accurate."

"But it is flat and level? And no higher than this point?"

"A little lower and sloping away. For drainage."

"Very well. Now place your attention on this configuration." Again it was Hugh's property, a Conoco map of the state. "That object fastened to your back you may think of as a clock. We will not explain it, you could not understand. Suffice to say that radiation decay of a metal inside it measures time. That is why it is heavy; it is cased in lead to protect it. You will take it to here." The Chosen pointed to a town on the map; Hugh noted that it was the home of the state university.

At a gesture the Chosen was handed a slip of paper. To Hugh he said, "Can you read this? Or must it be explained?"

"It says 'University State Bank,'" Hugh told him. "I seem to recall that there was an institution of that name in that town. I'm not sure, I don't recall doing business with it."

"There was," the Chosen assured him, "and its ruins were recently uncovered. You will go to it. There was, and still is, a strong room, a vault, in its lowest part. You will place this clock in that vault. Do you understand?"

"I understand."

"By Their Charity's wish, that vault has not yet been opened. After you have gone, it will be opened. The clock will be found and we will read it. Do you understand why this is crucial to the experiment? It will not only tell us that you made the time jump safely but also exactly how long the span was-and from this our instruments will be calibrated." The Chosen looked very fierce. "Do this exactly. Or you will be severely punished."

Ponse caught Hugh's eye at this point. The old man was not laughing but his eyes twinkled. "Do it, Hugh," he said quietly. "That's a good fellow."

Hugh said to the Chosen scientist. "I will do it. I underc~t~ind "

The Chosen said, "May it please Their Charity, this one is ready to weigh them now, and then leave for the site."

"We've changed our mind," Ponse announced. "We will see this." He added, "Nerve in good shape, Hugh?"

"Quite."

"All of you who made the first jump were given this opportunity, did I tell you? Joe turned it down flatly." The old man glanced over his shoulder. "Grace! Changed your mind, little one?"

Grace looked up. "Ponsie!" she said reproachfully. "You know I would never leave you."

"Duke?"

The tempered servant did not even look up. He simply shook his head.

Ponse said to the scientist, "Let's hurry and get them weighed. We intend to sleep at home tonight."

The weighing was done elsewhere in the Palace. Just before the four were placed on the weighing area the Lord Protector held up the cartridge clip he had removed from the pistol Hugh now wore. "Hugh? Will you undertake not to be foolish with this? Or should I have the pellets separated from the explosives?"