PETER ELLIOT’S UNQUESTIONED RELIANCE ON twentieth-century hard data-facts, figures, graphs-left him unprepared for the possibility that the 1642 engraving, in all its detail, was merely the fanciful speculation of an uninhibited artist. The news came as a shock.

Their plans to take Amy to the Congo suddenly appeared childishly naпve; the resemblance of her sketchy, schematic drawings to the 1642 Valdez engraving was obviously coincidental. How could they ever have imagined that a Lost City of Zinj was anything but the stuff of ancient fable? In the seventeenth-century world of widening horizons and new wonders, the idea of such a city would have seemed perfectly reasonable, even compelling. But in the computerized twentieth century, the Lost City of Zinj was as unlikely as Camelot or Xanadu. They had been fools ever to take it seriously. “The lost city doesn’t exist,” he said.

“Oh, it exists, all right,” she said. “There’s no doubt about that.”

Elliot glanced up quickly, and then he saw that Sarah Johnson had not answered him. A tall gangly girl in her early twenties stood at the back of the room. She might have been considered beautiful except for her cold, aloof demeanor. This girl was dressed in a severe, businesslike suit, and she carried a briefcase, which she now set on the table, popping the latches.

“I’m Dr. Ross,” she announced, “from the Wildlife Fund, and I’d like your opinion of these pictures.”

She passed around a series of photographs, which were viewed by the staff with an assortment of whistles and sighs. At the head of the table, Elliot waited impatiently until the photographs came down to him.

They were grainy black-and-white images with horizontal scanning line streaks, photographed off a video screen. But the image was unmistakable: a ruined city in the jungle, with curious inverted crescent-shaped doors and windows.

“BY SATELLITE?” ELLIOT REPEATED, HEARING THE tension in his voice.

“That’s right, the pictures were transmitted by satellite from Africa two days ago.”

“Then you know the location of this ruin?”

“Of course.”

“And your expedition leaves in a matter of hours?”

“Six hours and twenty-three minutes, to be exact,” Ross said, glancing at her digital watch,

Elliot adjourned the meeting, and talked privately with Ross for more than an hour. Elliot later claimed that Ross had “deceived” him about the purpose of the expedition and the hazards they would face. But Elliot was eager to go, and probably not inclined to be too fussy about the reasons behind Ross’s coming expedition, or the dangers involved. As a skilled grantsman, he had long ago grown comfortable with situations where other peoples’ money and his own motivations did not exactly coincide. This was the cynical side of academic life: how much pure research had been funded because it might cure cancer? A researcher promised anything to get his money.

Apparently it never occurred to Elliot that Ross might be using him as coldly as he was using her. From the start Ross was never entirely truthful; she had been instructed by Travis to explain the ERTS Congo mission “with a little data dropout.” Data dropout was second nature to her; everyone at ERTS had learned to say no more than was necessary. Elliot treated her as if she were an ordinary funding agency, and that was a serious mistake.

In the final analysis, Ross and Elliot misjudged each other, for each presented a deceptive appearance, and in the same way. Elliot appeared so shy and retiring that one Berkeley faculty member had commented, “It’s no wonder he’s devoted his life to apes; he can’t work up the nerve to talk to people.” But Elliot had been a tough middle linebacker in college, and his diffident academic demeanor concealed a head-crunching ambitious drive.

Similarly, Karen Ross, despite her youthful cheerleader beauty and soft, seductive Texas accent, possessed great intelligence and a deep inner toughness. (She had matured early, and a high-school teacher had once appraised her as “the very flower of virile Texas womanhood.”) Ross felt responsible for the previous ERTS expedition, and she was determined to rectify past errors. It was at least possible that Elliot and Amy could help her when she got onsite; that was reason enough to take them with her. Beyond that, Ross was concerned about the consortium, which was obviously seeking Elliot, since Morikawa was calling. If she took Elliot and Amy with her, she removed a possible advantage to the consortium-again, reason enough to take them with her. Finally, she needed a cover in case her expedition was stopped at one of the borders-and a primatologist and an ape provided a perfect cover.

But in the end Karen Ross wanted only the Congo diamonds-and she was prepared to say anything, do anything, sacrifice anything to get them.

In photographs taken at San Francisco airport, Elliot and Ross appeared as two smiling, youthful academics, embarking on a lark of an expedition to Africa. But in fact, their motivations were different, and grimly held. Elliot was reluctant to tell her how theoretical and academic his goals were-and Ross was reluctant to admit how pragmatic were hers.

In any case, by midday on June 14, Karen Ross found herself riding with Peter Elliot in his battered Fiat sedan along Hallowell Road, going past the University athletic field. She had some misgivings: they were going to meet Amy.

Elliot unlocked the door with its red sign DO NOT DISTURB ANIMAL EXPERIMENTATION IN PROGRESS. Behind the door, Amy was grunting and scratching impatiently. Elliot paused.

“When you meet her,” he said, “remember that she is a gorilla and not a human being. Gorillas have their own etiquette. Don’t speak loudly or make any sudden movements until she gets used to you. If you smile, don’t show your teeth, because bared teeth are a threat. And keep your eyes downcast, because direct stares from strangers are considered hostile. Don’t stand too close to me or touch me, be-cause she’s very jealous. If you talk to her, don’t lie. Even though she uses sign language, she understands most human speech, and we usually just talk to her. She can tell when you’re lying and she doesn’t like it.”

“She doesn’t like it?”

“She dismisses you, won’t talk to you, and gets bitchy.”

“Anything else?”

“No, it should be okay.” He smiled reassuringly. “We have this traditional greeting, even though she’s getting a little big for it.” He opened the door, braced himself, and said, “Good morning, Amy.”

A huge black shape came leaping out through the open door into his arms. Elliot staggered back under the impact. Ross was astonished by the size of the animal. She had been imagining something smaller and cuter. Amy was as large as an adult human female.

Amy kissed Elliot on the cheek with her large lips, her black head seeming enormous alongside his. Her breath steamed his glasses. Ross smelled a sweetish odor, and watched as he gently unwrapped her long arms from around his shoulders. “Amy happy this morning?” he asked.

Amy’s fingers moved quickly near her cheek, as if she were brushing away flies.

“Yes, I was late today,” Elliot said.

She moved her fingers again, and Ross realized that Amy was signing. The speed was surprising; she had expected something much slower and more deliberate. She noticed that Amy’s eyes never left Elliot’s face. She was extraordinarily attentive, focusing on him with total animal watchfulness. She seethed to absorb everything, his posture, his expression, his tone of voice, as well as his words.

“I had to work,” Elliot said. She sighed again quickly, like human gestures of dismissal. “Yes, that’s right, people work.” He led Amy back into the trailer, and motioned for Karen Ross to follow. Inside the trailer, he said, “Amy, this is Dr. Ross. Say hello to Dr. Ross.”