He handed a large Scotch to Riggs, then took his own over to the desk, self-consciously removed some of the books stacked over the radio console.
"Ever try listening to that thing?" Riggs asked, playfully introducing a hint of reproof into his voice.
"Never," Kerans said. "Is there any point? We know all the news for the next three million years."
"You don't. Really, you should switch it on just now and then. Hear all sorts of interesting things." He put his drink down and sat forward. "For example, this morning you would have heard that exactly three days from now we're packing up and leaving for good." He nodded when Kerans looked around in surprise. "Came through last night from Byrd. Apparently the water level is still rising, all the work we've done has been a total waste—as I've always maintained, incidentally. The American and Russian units are being recalled as well. Temperatures at the Equator are up to one hundred and eighty degrees now, going up steadily, and the rain belts are continuous as high as the 20th parallel. There's more silt too—"
He broke off, watching Kerans speculatively. 'What's the matter? Aren't you relieved to be going?"
"Of course," Kerans said automatically. He was holding an empty glass, and walked across the room, intending to put it on the bar, instead found himself absent-mindedly touching the clock over the mantelpiece. He seemed to be searching the room for something. "Three days, you said?"
"What do you want—three million?" Riggs grinned broadly. "Robert, I think you secretly want to stay behind."
Kerans reached the bar and filled his glass, collecting himself. He had oniy managed to survive the monotony and boredom of the previous year by deliberately suspending himself outside the normal world of time and space, and the abrupt return to earth had momentarily disconcerted him. In addition, he knew, there were other motives and responsibilities.
"Don't be absurd," he replied easily. "I simply hadn't realised that we might withdraw at such short notice. Naturally I'm glad to be going. Though I admit I have enjoyed being here." He gestured at the suite around them. "Perhaps it appeals to my fin de siecle temperament. Up at Camp Byrd I'll be living in half a mess tin. The nearest I'll ever get to this sort of thing will be 'Bouncing with Beethoven' on the local radio show."
Riggs roared at this display of disgruntled humour, then stood up, buttoning his tunic. "Robert, you're a strange one."
Kerans finished his drink abruptly. "Look, Colonel, I don't think I'll be able to help you this morning after all. Something rather urgent has come up." He noticed Riggs nodding slowly. "Oh, I see. That was your problem. My problem."
"Right. I saw her last night, and again this morning after the news came through. You'll have to convince her, Robert. At present she refuses point-blank to go. She doesn't realise that this time is the end, that there'll be no more holding units. She may be able to hang on for another six months, but next March, when the rain belts reach here, we won't even be able to get a helicopter in. Anyway, by then no-one will care. I told her that and she just walked away."
Kerans smiled bleakly, visualising the familiar swirl of hip and haughty stride. "Beatrice can be difficult sometimes," he temporised, hoping that she hadn't offended Riggs. It would probably take more than three days to change her mind and he wanted to be sure that the Colonel would still be waiting. "She's a complex person, lives on many levels. Until they all synchronise she can behave as if she's insane."
They left the suite, Kerans sealing the air-locks and setting the thermostat alarms so that the air would be a pleasant eighty degrees in two hours' time. They made their way down to the landing stage, Riggs pausing occasionally to savour the cool gilded air in one of the public drawing rooms overlooking the lagoon, hissing at the snakes which glided softly among the damp, fungus-covered settees. They stepped into the cutter and Macready slammed the door of the cage behind them.
Five minutes later, the catamaran gliding and swirling behind the cutter, they set off from the hotel across the lagoon. Golden waves glimmered up into the boiling air, the ring of massive plants around them seeming to dance in the heat gradients like a voodoo jungle.
Riggs peered sombrely through the cage. "Thank God for that signal from Byrd. We should have got out years ago. All this detailed mapping of harbours for use in some hypothetical future is absurd. Even if the solar flares subside it will be ten years before there's any serious attempt to re-occupy these cities. By then most of the bigger buildings will have been smothered under the silt. It'll take a couple of divisions to clear the jungle away from this lagoon alone. Bodkin was telling me this morning that already some of the canopies—of non-lignified plants, mark you—are over two hundred feet high. The whole place is nothing but a confounded zoo."
He took off his peaked cap and rubbed his forehead, then shouted across the mounting roar of the two outboard diesels: "If Beatrice stays here much longer she will be insane. By the way, that reminds me of another reason why we've got to get out." He glanced across at the tall lonely figure of Sergeant Macready at the tiller, staring fixedly at the breaking water, and at the pinched haunted faces of the other men. "Tell me, Doctor, how do you sleep these days?"
Puzzled, Kerans turned to look at the Colonel, wondering whether the question obliquely referred to his relationship with Beatrice Dahl. Riggs watched him with his bright intelligent eyes, baton flexed between his neat hands. "Very soundly," he replied carefully. "Never better. Why do you ask?"
But Riggs merely nodded and began to shout instructions at Macready.
CHAPTER TWO
THE COMING OF THE IGUANAS
Screeching like a dispossessed banshee, a large hammer-nosed bat soared straight out of one of the narrow inlets off the creek and swerved straight toward the cutter. Its sonar confused by the labyrinth of giant webs spun across the inlet by the colonies of wolf spiders, it missed the wire hood above Kerans' head by only a few feet, and then sailed away along the line of submerged office blocks, gliding in and out of the huge sail-like fronds of the fern trees sprouting from their roofs. Suddenly, as it passed one of the projecting cornices, a motionless stone-headed creature snapped out and plucked the bat from the air. There was a brief piercing squawk and Kerans caught a glimpse of the crushed wings clamped in the lizard's jaws. Then the reptile shrank back invisibly among the foliage.
All the way down the creek, perched in the windows of the office blocks and department stores, the iguanas watched them go past, their hard frozen heads jerking stiffly. They launched themselves into the wake of the cutter, snapping at the insects dislodged from the air-weed and rotting logs, then swam through the windows and clambered up the staircases to their former vantage points, piled three deep across each other. Without the reptiles, the lagoons and the creeks of office blocks half-submerged in the immense heat would have had a strange dream-like beauty, but the iguanas and basilisks brought the fantasy down to earth. As their seats in the one-time boardrooms indicated, the reptiles had taken over the city. Once again they were the dominant form of life.
Looking up at the ancient impassive faces, Kerans could understand the curious fear they roused, rekindling archaic memories of the terrifying jungles of the Paleocene, when the reptiles had gone down before the emergent mammals, and sense the implacable hatred one zoological class feels towards another that usurps it.
At the end of the creek they entered the next lagoon, a wide circle of dark green water almost half a mile in diameter. A lane of red plastic buoys marked a channel towards an opening on the far side. The cutter had a draught of little more than a foot, and as they moved along through the flat water, the sun slanting down behind them opening up the submerged depths, they could see the clear outlines of five- and six-storey buildings looming like giant ghosts, here and there a moss-covered roof breaking the surface as the swell rolled past it.
Sixty feet below the cutter a straight grey promenade stretched away between the buildings, the remains of some former thoroughfare, the rusting humped shells of cars still standing by
the curb. Many of the lagoons in the centre of the city were surrounded by an intact ring of buildings, and consequently little silt had entered them. Free of vegetation, apart from a few drifting clumps of Sargasso weed, the streets and shops had been preserved almost intact, like a reflection in a lake that has somehow lost its original.
The bulk of the city had long since vanished, and only the steel-supported buildings of the central commercial and financial areas had survived the encroaching flood waters. The brick houses and single-storey factories of the suburbs had disappeared completely below the drifting tides of silt. Where these broke surface giant forests reared up into the burning dull-green sky, smothering the former wheatfields of temperate Europe and North America. Impenetrable Matto Grossos sometimes three hundred feet high, they were a nightmare world of competing organic forms returning rapidly to their Paleozoic past, and the only avenues of transit for the United Nations military units were through the lagoon systems that had superimposed themselves on the former cities. But even these were now being clogged with silt and then submerged.
Kerans could remember the unending succession of green twilights that had settled behind them as he and Riggs moved slowly northward across Europe, leaving one city after another, the miasmic vegetation swamping the narrow canals and crowding from rooftop to rooftop.
Now they were to abandon yet another city. Despite the massive construction of the main commercial buildings, it consisted of little more than three principal lagoons, surrounded by a nexus of small lakes fifty yards in diameter and a network of narrow creeks and inlets which wound off, roughly following the original street-plan of the city, into the outlying jungle. Here and there they vanished altogether or expanded into the steaming sheets of open water that were the residues of the former oceans. In turn these gave way to the archipelagoes that coalesced to form the solid jungles of the southern massif.
The military base set up by Riggs and his platoon, which harboured the biological testing station, was in the most southerly of the three lagoons, sheltered by a number of the tallest buildings of the city, thirty-storey blocks in what had once been the down-town financial sector.
As they crossed the lagoon the yellow-striped drum of the floating base was on its sun-ward side, almost obscured in the reflected light, the rotating blades of the helicopter on its roof throwing brilliant lances across the smaller white-painted hull of the biological testing water at them. Two hundred yards down shore was the smaller white-pointed hull of the biological testing station, moored against a broad hump-backed building which had formerly been a concert hall.
Kerans gazed up at the rectangular cliffs, enough of the windows intact to remind him of the illustrations of sun-dazzled promenades at Nice, Rio and Miami he had read about as a child in the encyclopaedias at Camp Byrd. Curiously, though, despite the potent magic of the lagoon worlds and the drowned cities, he had never felt any interest in their contents, and never bothered to identify which of the cities he was stationed in.
Dr. Bodkin, twenty-five years his senior, had actually lived in several of them, both in Europe and America, and spent most of his spare time punting around the remoter water-ways, searching out former libraries and museums. Not that they contained anything other than his memories.
Perhaps it was this absence of personal memories that made Kerans indifferent to the spectacle of these sinking civilisations. He had been born and brought up entirely within what had once been known as the Arctic Circle—now a sub-tropical zone with an annual mean temperature of eighty-five degrees—and had come southward only on joining one of the ecological surveys in his early 30's. The vast swamps and jungles had been a fabulous laboratory, the submerged cities little more than elaborate pedestals.
Apart from a few older men such as Bodkin there was no-one who remembered living in them—and even during Bodkin's childhood the cities had been beleagured citadels, hemmed in by enormous dykes and disintegrated by panic and despair, reluctant Venices to their marriage with the sea. Their charm and beauty lay precisely in their emptiness, in the strange junction of two extremes of nature, like a discarded crown overgrown by wild orchids.
The succession of gigantic geophysical upheavals which had transformed the Earth's climate had made their first impact some sixty or seventy years earlier. A series of violent and prolonged solar storms lasting several years caused by a sudden instability in the Sun had enlarged the Van Allen belts and diminished the Earth's gravitational hold upon the outer layers of the ionosphere. As these vanished into space, depleting the Earth's barrier against the full impact of solar radiation, temperatures began to climb steadily, the heated atmosphere expanding outwards into the ionosphere where the cycle was completed.
All over the world, mean temperatures rose by a few degrees each year. The majority of tropical areas rapidly became uninhabitable, entire populations migrating north or south from temperatures of a hundred and thirty and a hundred and forty degrees. Once-temperate areas became tropical, Europe and North America sweltering under continuous heat waves, temperatures rarely falling below a hundred degrees. Under the direction of the United Nations, the colonisation began of the Antarctic plateau and of the northern borders of the Canadian and Russian continents.
Over this initial period of twenty years a gradual adjustment of life took place to meet the altered climate. A slackening of the previous tempo was inevitable, and there was little spare energy available to cut back the encroaching jungles of the equatorial region. Not only was the growth of all plant forms accelerated, but the higher levels of radioactivity increased the rate at which mutations occurred. The first freak botanical forms appeared, recalling the giant tree-ferns of the Carboniferous period, and there was a drastic upsurge of all lower plant and animal forms.
The arrival of these distant forbears was overlayed by the second major geophysical upheaval. The continued heating of the atmosphere had begun to melt the polar ice-caps. The entrained ice-seas of the Antarctic plateau broke and dissolved, tens of thousands of glaciers around the Arctic Circle, from Greenland and Northern Europe, Russia and North America, poured themselves into the sea, millions of acres of permafrost liquefied into gigantic rivers.
Here again the rise of global water levels would have been little more than a few feet, but the huge discharging channels carried with them billions of tons of top-soil. Massive deltas formed at their mouths, extending the continental coastlines and damming up the oceans. Their effective spread shrank from two-thirds of the world's area to only slightly more than half.
Driving the submerged silt before them, the new seas completely altered the shape and contours of the continents. The Mediterranean contracted into a system of inland lakes, the British Isles was linked again with northern France. The Middle West of the United States, filled by the Mississippi as it drained the Rocky Mountains, became an enormous gulf opening into the Hudson Bay, while the Caribbean Sea was transformed into a desert of silt and salt flats. Europe became a system of giant lagoons, centred on the principal low-lying cities, inundated by the silt carried southwards by the expanding rivers.
During the next thirty years the pole-ward migration of populations continued. A few fortified cities defied the rising waterlevels and the encroaching jungles, building elaborate sea-walls around their perimeters, but one by one these were breached. Only within the former Arctic and Antarctic Circles was life tolerable. The oblique incidence of the Sun's rays provided a shield against the more powerful radiation. Cities on higher ground in mountainous areas nearer the Equator had been abandoned despite their cooler temperatures because of the diminished atmospheric protection.
It was this last factor which provided its own solution to the problem of re-settling the migrant populations of the new Earth. The steady decline in mammalian fertility, and the growing ascendancy of amphibian and reptile forms best adapted to an aquatic life in the lagoons and swamps, inverted the ecological balances, and by the time of Kerans' birth at Camp Byrd, a city of ten thousand in Nor
thern Greenland, it was estimated that fewer than five million people were still living on the polar caps.
The birth of a child had become a comparative rarity, and only one marriage in ten yielded any offspring. As Kerans sometimes reminded himself, the genealogical tree of mankind was systematically pruning itself, apparently moving backwards in time, and a point might ultimately be reached where a second Adam and Eve found themselves alone in a new Eden.
Riggs noticed him smiling to himself at this conceit. "What's amusing you, Robert? Another of your obscure jokes? Don't try to explain it to me."
"I was just casting myself in a new role." Kerans looked out over the ramp at the office blocks sliding past twenty feet away, the wash from the cutter splashing through the open windows along the water-line. The sharp tang of wet lime contrasted freshly with the over-sweet odours of the vegetation. Macready had taken them into the shadow of the buildings and it was pleasantly cool behind the breaking spray.
Across the lagoon he could see the portly bare-chested figure of Dr. Bodkin on the starboard bridge of the testing station, the Paisley cummerbund around his waist and the green celluloid shade shielding his eyes making him look like a riverboat gambler on his morning off. He was plucking the orange-sized berries from the ferns overhanging the station and tossing them up at the chittering marmosets dangling from the branches above his head, egging them on with playful shouts and whistles. Fifty feet away, on a projecting cornice, a trio of iguanas watched with stony disapproval, whipping their tails slowly from side to side in a gesture of impatience.