I was thoroughly alarmed by this news, and I put on my sternest expression and shook my head and sucked air through my teeth and tut-tutted to show my disapproval. 'I am grateful for your good sense in not agreeing to Aton's suggestion, Your Majesty. It could so easily have undone all our efforts. If you want a son, then you must follow my regime meticulously.'

  This brought home to me the swift passage of time, and how soon the ninety days of grace would be up. I began to condition my mistress for that night which Pharaoh would soon insist upon.

  First I must prepare her mind, and I set about this by pointing out to her that it was inevitable, and that if she wished to outlive the king and eventually to go to Tanus, then she would have to submit to the king's will. She was always a sensible girl.

  'Then you will have to explain exactly what it is he expects of me, Taita,' she sighed. I was not the best guide in this area. My personal experience had been ephemeral, but I was able to outline the fundamentals and to make it seem so commonplace as not to alarm her unduly.

  'Will it hurt?' she wanted to know, and I hastened to reassure her.

  'The king is a kind man. He has much experience of young girls. I am sure he will be gentle with you. I will prepare an ointment for you that will make things much easier. I will apply it every night before you retire. It will open the gateway. Think to yourself that one day Tanus will pass through those same portals, and that you are doing this to welcome him and no other.'

  I tried to remain the aloof physician and take no sensual pleasure in what I had to do to help her. The gods forgive me, but I failed in my resolution. She was so perfect in her womanly parts as to overshadow the most lovely blossom that I had ever raised in my garden. No desert rose ever bore petals so exquisite. When I smoothed the ointment upon them they raised their own sweet dew, more oleaginous and silky to the touch than any unguent that I could concoct.

  Her cheeks turned rosy and her voice was husky as she murmure.d, 'Up until now, I thought that part of me was meant for only one purpose. Why is it that when you do that, I long so unbearably for Tanus?'

  She trusted me so implicitly, and had so little understanding of these unfamiliar sensations, that it required the exercise of all my ethics as a physician to proceed with the treatment only as long as was necessary. However, I slept only fitfully that night, haunted by dreams of the impossible.

  AS WE SAILED DEEPER INTO THE SOUTH, so the belts of green land on each side of the river narrowed. Now the desert began to squeeze in upon us. In places brooding cliffs of black granite trod the verdant fields under foot and pressed so close as to overhang the turgid waters of the Nile.

  The most forbidding of these narrows was known as the Gates of Hapi, and the waters were whipped into a wild and wilful temper as they boiled through the gap in the high cliffs.

  We made the passage of the Gates of Hapi, and came at last to Elephantine, the largest of a great assembly of islands that were strung through the throat of the Nile, where the harsh hills constricted its flow and forced it through the narrows.

  Elephantine was shaped like a monstrous shark pursuing the shoal of lesser islands up the narrows. On either side of the river the encroaching deserts were distinct in colour and character. On the west bank, the Saharan dunes were hot orange and savage as the Bedouin who were the only mortals able to survive amongst them. To the east, the Arabian desert was dun and dirty grey, studded with black hills that danced dreamlike in the heat mirage. These deserts had one thing in common?both of them were killers of men.

  What a delightful contrast was Elephantine Island, set like a glistening green jewel in the silver crown of the river. It took its name from the smooth grey granite boulders that clustered along its bank like a herd of the huge pachyderms and also from the fact that the trade in ivory brought down from the savage land of Cush beyond the cataract had for a thousand years centred upon this place.

  Pharaoh's palace sprawled over most of the island, and the wags suggested that he had chosen to build it here at the southernmost point in his kingdom to be as far from the red pretender in the north as possible.

  The wide stretch of water that surrounded the island secured it from the attack of an enemy, but the remainder of the city had overflowed on to both main banks. After great Thebes, west and east Elephantine together made up the largest and most populous city in the Upper Kingdom, a worthy rival to Memphis, the seat of the red pretender in the Lower Kingdom.

  As at no other place in the whole of Egypt, Elephantine Island was clad with trees. Their seeds had been brought down by the river on a thousand annual floods, and they had taken root in the fertile loams that had themselves been transported by the restless waters.

  On my last visit to Elephantine, when I had come up-river to do a survey of the river gauges for my Lord Intef in his capacity as Guardian of the Waters, I had spent many months on the island. With the assistance of the head gardener, I had catalogued the names and natural histories of all the plants in the palace gardens, so I was able to point them out to my mistress. There were/Jews trees the like of which had never been seen elsewhere in Egypt. Their fruits grew not upon the branch but on the main trunk, and their roots twisted and writhed together like mating pythons. There were dragon's blood trees whose bark, when cut, poured out a bright red sap. There were Cushite sycamores and a hundred other varieties that spread a shady green umbrella over the lovely little island.

  The royal palace was built upon the solid granite that lay below the fertile soil and formed the skeleton of the island. I have often wondered that our kings, the long line of phar-aohs of fifty dynasties that stretches back over a thousand years, have each of them devoted so much of his life and treasure to the building of vast and eternal tombs of granite and marble, while in their lifetimes they have been content to live in palaces with mud walls and thatched roofs. In comparison to the magnificent funerary temple that I was building for Pharaoh Mamose at Karnak, this palace was a very modest affair, and the dearth of straight lines and symmetry offended the instincts of both the mathematician and the architect in me. I suppose the sprawling jumble of red clay walls and roofs canted at odd angles did have a sort of bucolic charm, yet I itched to get out my ruler and plumb-line.

  Once we had gone ashore and found the quarters that had been set aside for us, the true appeal of Elephantine was even more apparent. Naturally we were lodged hi the walled harem on the northern tip of the island, but the size and the furnishings of our lodgings confirmed our favoured position, not only with the king but with his chamberlain as well. Aton had made the allocation, and he, like most others, had proved completely defenceless against my mistress's natural charm, and was now one of her most shameless admirers.

  He placed at our disposal a dozen spacious and airy rooms with our own courtyard and kitchens. A side-gate in the main wall led directly down to the riverside-and a stone jetty. That very first day I purchased a flat-bottomed skiff which we could use for fishing and water-fowling. I kept it moored at the jetty.

  As to the rest of our new home, however comfortable it might have been, neither my mistress nor I was satisfied, and we immediately set about improving and beautifying it. With the cooperation of my old friend the head gardener, I laid out and planted our own private garden hi the courtyard, with a thatched barrazza under which we could sit in the heat of the day, and where I kept my Saker falcons tethered on their perches.