Laing wiped his hands on his dirt-stained trousers and shirt. Reclining against this soft bed of his own waste, he felt like going to sleep. With an effort he roused himself. A continuous decline had been taking place for some time, a steady erosion of standards that affected, not only the apartment, but his own personal habits and hygiene. To some extent this was forced on him by the intermittent water and electricity supply, the failure of the garbage-disposal system. But it also reflected a falling interest in civilized conventions of any kind. None of his neighbours cared what food they ate. Neither Laing nor his friends had prepared a decent meal for weeks, and had reached the point where they opened a can at random whenever they felt hungry. By the same token, no one cared what they drank, interested only in getting drunk as quickly as possible and blunting whatever sensibilities were left to them. Laing had not played one of his carefully built-up library of records for weeks. Even his language had begun to coarsen.

He picked at the thick rims of dirt under his nails. This decline, both of himself and his surroundings, was almost to be welcomed. In a way he was forcing himself down these steepening gradients, like someone descending into a forbidden valley. The dirt on his hands, his stale clothes and declining hygiene, his fading interest in food and drink, all helped to expose a more real version of himself.

Laing listened to the intermittent noises from the refrigerator. The electricity had come on again, and the machine was sucking current from the mains. Water began to trickle from the taps as the pumps started to work. Spurring himself on with Alice's criticisms, Laing wandered around the apartment, doing what he could to straighten the furniture. But half an hour later, as he carried a garbage-sack from the kitchen into the hallway, he suddenly stopped. He dropped the sack on to the floor, realizing that he had achieved nothing-all he was doing was rearranging the dirt.

Far more important was the physical security of the apartment, particularly while he was away. Laing strode down the long bookcase in the sitting-room, pulling his medical and scientific text-books on to the floor. Section by section, he wrenched out the shelving. He carried the planks into the hall, and for the next hour moved around the apartment, transforming its open interior into a home-made blockhouse. All pieces of heavy furniture, the dining-table and a hand-carved oak chest in his bedroom, he pulled into the hall. With the armchairs and desk he constructed a solid barricade. When he was satisfied with this he moved his food supplies from the kitchen into the bedroom. His resources were meagre, but would keep him going for several days-bags of rice, sugar and salt, cans of beef and pork, and a stale loaf of bread.

Now that the air-conditioning had ceased, the rooms soon became stuffy. Recently Laing had noticed a strong but not unpleasant smell, the characteristic odour of the apartment-himself.

Laing stripped off his grimy sports-shirt and washed himself in the last water flowing from the shower. He shaved and put on a fresh shirt and suit. If he visited the medical school looking like a tramp he might give away to some sharp-eyed colleague what was actually going on in the high-rise. He examined himself in the wardrobe mirror. The gaunt, white-skinned figure with a bruised forehead standing awkwardly in an over-large business suit looked totally unconvincing, like a discharged convict in his release suit blinking at the unfamiliar daylight after a long prison-sentence.

After tightening the bolts on the front door, Laing let himself out of the apartment. Fortunately, leaving the high-rise was easier than moving around within it. Like an unofficial subway service, one elevator still travelled by mutual consent to and from the main entrance lobby during office hours. However, the atmosphere of tension and hostility, the complex of overlapping internal sieges, was apparent everywhere. Barricades of lobby furniture and plastic sacks filled with garbage blocked the entrances to individual floors. Not only the lobby and corridor walls, but the ceilings and carpets were covered with slogans, a jumble of coded signals that marked the attacks of raiding parties from floors above and below. Laing had to restrain himself from pencilling the number of his own floor among the numerals, some three feet high, emblazoned across the walls of the elevator car like the entries in a lunatic ledger. Almost everything possible had been vandalized-lobby mirrors fractured, pay-phones torn out, sofa upholstery slashed. The degree of vandalism was deliberately excessive, almost as if it served a more important secondary role, disguising the calculated way in which the residents of the high-rise, by ripping out all the phone lines, were cutting themselves off from the outside world.

For a few hours each day a system of informal truce routes opened like fracture lines throughout the building, but this period was becoming progressively shorter. Residents moved around the building in small groups, sharply on the look-out for any strangers. Each of them wore his floor-level on his face like a badge. During this brief armistice of four or five hours they could move about, contestants in a ritualized ladder-battle allowed between bouts to mount the rungs of their pre-ordained ranks. Laing and his fellow passengers waited as the car made its slow descent, frozen together like mannequins in a museum tableau-"late twentieth-century high-rise dweller".

When they reached the ground floor Laing walked cautiously through the entrance, past the shuttered manager's office and the sacks of unsorted mail. He had not been to the medical school for days, and as he stepped through the glass doors he was struck immediately by the cooler light and air, like the harsh atmosphere of an alien planet. A sense of strangeness, far more palpable than anything within the building, extended around the apartment block on all sides, reaching across the concrete plazas and causeways of the development project.

Looking over his shoulder, as if maintaining a mental life-line to the building, Laing walked across the parking-lot. Hundreds of broken bottles and cans lay among the cars. A health engineer from the central office of the project had called the previous day but left within half an hour, satisfied that these signs of breakdown were no more than teething troubles in the building's waste-disposal system. As long as the residents made no formal complaint, no action would be taken. Laing was no longer surprised by the way in which the residents, who only a few weeks earlier had been united in their anger over the breakdown of the building's services, were now just as united in assuring any outsiders that all was well-partly out of a displaced pride in the high-rise, but also out of a need to resolve the confrontation between them without interference, like rival gangs battling across a refuse tip who joined forces to expel any intruder.

Laing reached the centre of the parking-lot, only two hundred yards from the neighbouring high-rise, a sealed rectilinear planet whose glassy face he could now see clearly. Almost all the new tenants had moved into their apartments, duplicating to the last curtain fabric and dish-washer those in his own block, but this building seemed remote and threatening. Looking up at the endless tiers of balconies, he felt uneasily like a visitor to a malevolent zoo, where terraces of vertically mounted cages contained creatures of random and ferocious cruelty. A few people leaned on their railings and watched Laing without expression, and he had a sudden image of the two thousand residents springing to their balconies and hurling down at him anything to hand, inundating Laing beneath a pyramid of wine bottles and ashtrays, deodorant aerosols and contraceptive wallets.

Laing reached his car and leaned against the window pillar. He knew that he was testing himself against the excitements of the world outside, exposing himself to its hidden dangers. For all its present conflict, the high-rise represented safety and security. Feeling the warm cellulose of the window pillar against his shoulder, Laing remembered the stale air in his apartment, tepid with the smell of his own body. By comparison, the brilliant light reflected off the chromium trim of the hundreds of cars filled the air with knives.

He turned away from his car, and walked along the parking lane that ran parallel to the apartment building. He was not ready yet to venture into the open air, face his colleagues at the medical school, catch up with the lost student supervisions. Perhaps he would stay at home that afternoon and prepare his notes for his next lecture.

He reached the edge of the ornamental lake, a graceful oval two hundred yards in length, and stepped down on to the concrete floor. Following his shadow, he walked along the gently sloping lake-bed. Within a few minutes he was standing in the centre of the empty lake. The damp concrete, like the surface of an enormous mould, curved away on all sides, smooth and bland, but in some way as menacing as the contours of some deep reductive psychosis. The absence of any kind of rigid rectilinear structure summed up for Laing all the hazards of the world beyond the high-rise.

Unable to stay there any longer, he turned and strode swiftly towards the shore, climbed the bank and ran towards the apartment building between the dusty cars.

Within ten minutes he had returned to his apartment. After bolting the door, he climbed over his barricade and wandered around the half-empty rooms. As he inhaled the stale air he was refreshed by his own odour, almost recognizing parts of his body-his feet and genitalia, the medley of smells that issued from his mouth. He stripped off his clothes in the bedroom, throwing his suit and tie into the bottom of the closet and putting on again his grimy sports-shirt and trousers. He knew now that he would never again try to leave the high-rise. He was thinking about Alice, and how he could bring her to his apartment. In some way these powerful odours were beacons that would draw her to him.