"I really think it’s about time we had some lunch," Lyn Garland interrupted with well-timed tact.

Danchekker turned abruptly and began walking back toward the door, reciting statistics on the density of body hair and the thickness of subdermal layers of fat, apparently having dismissed the incident from his mind. Hunt paused to survey the body once more before turning to follow, and in doing so, he caught Gray’s eye for an instant. The engineer’s mouth twitched briefly at the corners; Hunt gave a barely perceptible shrug. Caldwell, still standing by the foot of the table, observed the brief exchange. He turned his head to look after Danchekker and then back again at the Englishmen, his eyes narrowing thoughtfully. At last he fell in a few paces behind the group, nodding slowly to himself and permitting a faint smile.

The door slid silently into place and the room was once more plunged into darkness.

Hunt brought his hands up to his shoulders, stretched his body back over his chair, and emitted a long yawn at the ceiling of the laboratory. He held the position for a few seconds, and then collapsed back with a sigh. Finally he rubbed his eyes with his knuckles, hauled himself upright to face the console in front of him once more, and returned his gaze to the three-foot-high wall of the cylindrical glass tank by his side.

The image on the Trimagniscope tube was an enlarged view of one of the pocket-size books found on the body, which Danchekker had shown them on their first day in Houston three weeks before. The book itself was enclosed in the scanner module of the machine, on the far side of the room. The scope was adjusted to generate a view that followed the change in density along the boundary surface of the selected page, producing an image of the lower section of the book only; it was as if the upper part had been removed, like a cut deck of cards. Because of the age and condition of the book, however, the characters on the page thus exposed tended to be of poor quality and in some places were incomplete. The next step would be to scan the image optically with TV cameras and feed the encoded pictures into the Navcomms computer complex. The raw input would then be processed by pattern recognition techniques and statistical techniques to produce a second, enhanced copy with many of the missing character fragments restored.

Hunt cast his eye over the small monitor screens on his console, each of which showed a magnified view of a selected area of the page, and tapped some instructions into his keyboard.

"There’s an unresolved area on monitor five," he announced. "Cursors read X, twelve hundred to thirteen eighty; Y, nine ninety and, ah, ten seventy-five."

Rob Gray, seated at another console a few feet away and almost surrounded by screens and control panels, consulted one of the numerical arrays glowing before him.

"Z mod’s linear across the field," he advised. "Try a block elevate?"

"Can do. Give it a try."

"Setting Z step two hundred through two ten… increment point one… step zero point five seconds."

"Check." Hunt watched the screen as the surface picked out through the volume of the book became distorted locally and the picture on the monitor began to change.

"Hold it there," he called. Gray hit a key. "Okay?"

Hunt contemplated the modified view for a while.

"The middle of the element’s clear now," he pronounced at last. "Fix the new plane inside forty percent. I still don’t like the strip around it, though. Give me a vertical slice through the center point."

"Which screen d’you want it on?"

"Ah… number seven."

"Coming up."

The curve, showing a cross section of the page surface through the small area they were working on, appeared on Hunt’s console. He studied it for awhile, then called:

"Run an interpolation across the strip. Set thresholds of, say, minus five and thirty-five percent on Y."

"Parameters set… Interpolator running… run complete," Gray recited. "Integrating into scan program now." Again the picture altered subtly. There was a noticeable improvement.

"Still not right around the edge," Hunt said. "Try weighting the quarter and three-quarter points by plus ten. If that doesn’t work, we’ll have to break it down into isodepth bands."

"Plus ten on point two five zero and point seven five zero," Gray repeated as he operated the keys. "Integrated. How’s it look?"

On the element of surface displayed on Hunt’s monitor, the fragments of characters had magically assembled themselves into recognizable shapes. Hunt nodded with satisfaction.

"That’ll do. Freeze it in. Okay-that clears that one. There’s another messy patch up near the top right. Let’s have a go at that next."

Life had been reduced to much this kind of pattern ever since the day the installation of the scope was completed. They had spent the first week obtaining a series of cross-sectional views of the body itself. This exercise had proved memorable on account of the mild discomfort and not so mild inconvenience of having to work in electrically heated suits, following the medical authority’s insistence that Charlie be kept in a refrigerated environment. It had proved something of an anticlimax. The net results were that, inside as well as out, Charlie was surprisingly-or not so surprisingly, depending on one’s point of view-human. During the second week they began examining the articles found on the body, especially the pieces of "paper" and the pocket books. This investigation had proved more interesting.

Of the symbols contained in the documents, numerals were the first to be identified. A team of cryptographers, assembled at Navcomms HQ, soon worked out the counting system, which turned out to be based on twelve digits rather than ten and employed a positional notation with the least significant digit to the left. Deciphering the nonnumeric symbols was proving more difficult. Linguists from institutions and universities in several countries had linked into Houston and, with the aid of batteries of computers, were attempting to make some sense of the language of the Lunarians, as Charlie’s race had come to be called in commemoration of his place of discovery. So far their efforts had yielded little more than that the Lunarian alphabet comprised thirty-seven characters, was written horizontally from right to left, and contained the equivalent of upper-case characters.

Progress, however, was not considered to be bad for so short a time. Most of the people involved were aware that even this much could never have been achieved without the scope, and already the names of the two Englishmen were well-known around the division. The scope attracted a lot of interest among the UNSA technical personnel, and most evenings saw a stream of visitors arriving at the Ocean Hotel, all curious to meet the coinventors of the instrument and to learn more about its principles of operation. Before long, the Ocean became the scene of a regular debating society where anybody who cared to could give free rein to his wildest speculations concerning the Charlie mystery, free from the constraints of professional caution and skepticism that applied during business hours.

Caldwell, of course, knew everything that was said by anybody at the Ocean and what everybody else thought about it, since Lyn Garland was present on most nights and represented the next best thing to a hot line back to the HQ building. Nobody minded that much-after all, it was only part of her job. They minded even less when she began turning up with some of the other girls from Navcomms in tow, adding a refreshing party atmosphere to the whole proceedings. This development met with the full approval of the visitors from out-of-town; however, it had led to somewhat strained relationships on the domestic front for one or two of the locals.