However, by the end of the lecture Ward found that his opinion of Kandinski had experienced a complete about-face.

As a lecturer Kandinski was poor, losing words, speaking in a slow ponderous style and trapping himself in long subordinate clauses, but his quiet, matter-of-fact tone and absolute conviction in the importance of what he was saying, coupled with the nature of his material, held the talk together. His analysis of the Venusian cryptograms, a succession of intricate philological theorems, was well above the heads of his audience, but what began to impress Ward, as much as the painstaking preparation which must have preceded the lecture, was Kandinski’s acute nervousness in delivering it. Ward noticed that he suffered from an irritating speech impediment that made it difficult for him to pronounce ‘Venusian’, and he saw that Kandinski, far from basking in the limelight, was delivering the lecture only out of a deep sense of obligation to his audience and was greatly relieved when the ordeal was over.

At the end Kandinski had invited questions. These, with the exception of the chairman’s, all concerned the landing of the alien space vehicle and ignored the real subject of the lecture. Kandinski answered them all carefully, taking in good part the inevitable facetious questions. Ward noted with interest the audience’s curious ambivalence, simultaneously fascinated by and resentful of Kandinski’s exposure of their own private fantasies, an expression of the same ambivalence which had propelled so many of the mana-personalities of history towards their inevitable Calvarys.

Just as the chairman was about to close the meeting, Ward stood up.

‘Mr Kandinski. You say that this Venusian indicated that there was also life on one of the moons of Uranus. Can you tell us how he did this if there was no verbal communication between you?’

Kandinski showed no surprise at seeing Ward. ‘Certainly; as I told you, he drew eight concentric circles in the sand, one for each of the planets. Around Uranus he drew five lesser orbits and marked one of these. Then he pointed to himself and to me and to a patch of lichen. From this I deduced, reasonably I maintain, that—’

‘Excuse me, Mr Kandinski,’ Ward interrupted. ‘You say he drew five orbits around Uranus? One for each of the moons?’

Kandinski nodded. ‘Yes. Five.’

‘That was in 1960,’ Ward went on. ‘Three weeks ago Professor Pineau at Brussels discovered a sixth moon of Uranus.’

The audience looked around at Ward and began to murmur.

‘Why should this Venusian have omitted one of the moons?’ Ward asked, his voice ringing across the gymnasium.

Kandinski frowned and peered at Ward suspiciously. ‘I didn’t know there was a sixth moon…’ he began.

‘Exactly!’ someone called out. The audience began to titter.

‘I can understand the Venusian not wishing to introduce any difficulties,’ Ward said, ‘but this seems a curious way of doing it.’

Kandinski appeared at a loss. Then he introduced Ward to the audience. ‘Dr Ward is a professional while I am only an amateur,’ he admitted. ‘I am afraid I cannot explain the anomaly. Perhaps my memory is at fault. But I am sure the Venusian drew only five orbits.’ He stepped down from the dais and strode out hurriedly, scowling into his beard, pursued by a few derisory hoots from the audience.

It took Ward fifteen minutes to free himself from the knot of admiring white-gloved spinsters who cornered him between two vaulting horses. When he broke away he ran out to his car and drove into Vernon Gardens, hoping to see Kandinski and apologize to him.

Five miles into the desert Ward approached a nexus of rock-cuttings and causeways which were part of an abandoned irrigation scheme. The colours of the hills were more vivid now, bright siliconic reds and yellows, crossed with sharp stabs of light from the exposed quartz veins. Following the map on the seat, he turned off the highway onto a rough track which ran along the bank of a dried-up canal. He passed a few rusting sections of picket fencing, a derelict grader half-submerged under the sand, and a collection of dilapidated metal shacks. The car bumped over the potholes at little more than ten miles an hour, throwing up clouds of hot ashy dust that swirled high into the air behind him.

Two miles along the canal the track came to an end. Ward stopped the car and waited for the dust to subside. Carrying Kandinski’s book in front of him like a divining instrument, he set off on foot across the remaining three hundred yards. The contours around him were marked on the map, but the hills had shifted several hundred yards westwards since the book’s publication and he found himself wandering about from one crest to another, peering into shallow depressions only as old as the last sand-storm. The entire landscape seemed haunted by strange currents and moods; the sand swirls surging down the aisles of dunes and the proximity of the horizon enclosed the whole place of stones with invisible walls.

Finally he found the ring of hills indicated and climbed a narrow saddle leading to its centre. When he scaled the thirty-foot slope he stopped abruptly.

Down on his knees in the middle of the basin with his back to Ward, the studs of his boots flashing in the sunlight, was Kandinski. There was a clutter of tiny objects on the sand around him, and at first Ward thought he was at prayer, making his oblations to the tutelary deities of Venus. Then he saw that Kandinski was slowly scraping the surface of the ground with a small trowel. A circle about 20 yards in diameter had been marked off with pegs and string into a series of wedgeshaped allotments. Every few seconds Kandinski carefully decanted a small heap of grit into one of the test-tubes mounted in a wooden rack in front of him.

Ward put away the book and walked down the slope. Kandinski looked around and then climbed to his feet. The coating of red ash on his beard gave him a fiery, prophetic look. He recognized Ward and raised the trowel in greeting.

Ward stopped at the edge of the string perimeter. ‘What on earth are you doing?’

‘I am collecting soil specimens.’ Kandinski bent down and corked one of the tubes. He looked tired but worked away steadily.

Ward watched him finish a row. ‘It’s going to take you a long time to cover the whole area. I thought there weren’t any gaps left in the Periodic Table.’

‘The space-craft rotated at speed before it rose into the air. This surface is abrasive enough to have scratched off a few minute filings. With luck I may find one of them.’ Kandinski smiled thinly. ‘262. Venusium, I hope.’

Ward started to say: ‘But the transuranic elements decay spontaneously…’ and then walked over to the centre of the circle, where there was a round indentation, three feet deep and five across. The inner surface was glazed and smooth. It was shaped like an inverted cone and looked as if it had been caused by the boss of an enormous spinning top. ‘This is where the spacecraft landed?’

Kandinski nodded. He filled the last tube and then stowed the rack away in a canvas satchel. He came over to Ward and stared down at the hole. ‘What does it look like to you? A meteor impact? Or an oil drill, perhaps?’ A smile showed behind his dusty beard. ‘The F-109s at the Air Force Weapons School begin their target runs across here. It might have been caused by a rogue cannon shell.’

Ward stooped down and felt the surface of the pit, running his fingers thoughtfully over the warm fused silica. ‘More like a 500-pound bomb. But the cone is geometrically perfect. It’s certainly unusual.’

‘Unusual?’ Kandinski chuckled to himself and picked up the satchel.

‘Has anyone else been out here?’ Ward asked as they trudged up the slope.

‘Two so-called experts.’ Kandinski slapped the sand off his knees. ‘A geologist from Gulf-Vacuum and an Air Force ballistics officer. You’ll be glad to hear that they both thought I had dug the pit myself and then fused the surface with an acetylene torch.’ He peered critically at Ward. ‘Why did you come out here today?’