At this time it seemed that social strife had vanished forever. But the most serious crisis of the race was still to come.
The submarine environment offered the symbiotic race no great possibilities of advancement. All sources of wealth had been tapped and regularized. Population was maintained at an optimum size for the joyful working of the world. The social order was satisfactory to all classes, and seemed unlikely to change. Individual lives were full and varied. Culture, founded on a great tradition, was now concerned entirely with detailed exploration of the great fields of thought that had long ago been pioneered by the revered ancestors, under direct inspiration, it was said, of the symbiotic diety. Our friends in this submarine world, our mental hosts, looked back on this age from their own more turbulent epoch sometimes with yearning, but often with horror; for in retrospect it seemed to them to display the first faint signs of racial decay. So perfectly did the race fit its unchanging environment that intelligence and acuity were already ceasing to be precious, and might soon begin to fade. But presently it appeared that fate had decreed otherwise.
In a submarine world the possibility of obtaining mechanical power was remote. But the arachnoids, it will be remembered, were able to live out of the water. In the epochs before the symbiosis their ancestors had periodically emerged upon the islands, for courtship, parenthood, and the pursuit of prey. Since those days the air-breathing capacity had declined, but it had never been entirely lost. Every arachnoid still emerged for sexual mating, and also for certain ritual gymnastic exercises. It was in this latter connection that the great discovery was made which changed the course of history. At a certain tournament the friction of stone weapons, clashing against one another, produced sparks, and fire among the sun-scorched grasses.
In startlingly quick succession came smelting, the steam engine, the electric current. Power was obtained first from the combustion of a sort of peat formed on the coasts by congested marine vegetation, later from the constant and violent winds, later still from photo-chemical light traps which absorbed the sun's lavish radiation. These inventions were of course the work of arachnoids. The ichthyoids, though they still played a great part in the systematization of knowledge, were debarred from the great practical work of scientific experiment and mechanical invention above the seas. Soon the arachnoids were running electric cables from the island power-stations to the submarine cities. In this work, at least, the ichthyoids could take part, but their part was necessarily subordinate. Not only in experience of electrical engineering but also in native practical ability they were eclipsed by their arachnoid partners.
For a couple of centuries or more the two species continued to cooperate, though with increasing strain. Artificial lighting, mechanical transport of goods on the ocean floor, and large-scale manufacture, produced an immense increase in the amenities of life in the submarine cities. The islands were crowded with buildings devoted to science and industry. Physics, chemistry, and biology made great progress. Astronomers began to map the galaxy. They also discovered that a neighboring planet offered wonderful opportunities for settlement by arachnoids, who might without great difficulty, it was hoped, be conditioned to the alien climate, and to divorce from their symbiotic partners. The first attempts at rocket flight were leading to mingled tragedy and success. The directorate of extra-marine activities demanded a much increased arachnoid population.
Inevitably there arose a conflict between the two species, and in the mind of every individual of either species. It was at the height of this conflict, and in the spiritual crisis in virtue of which these beings were accessible to us in our novitiate stage, that we first entered this world. The ichthyoids had not yet succumbed biologically to their inferior position, but psychologically they were already showing signs of deep mental decay. A profound disheartenment and lassitude attacked them, like that which so often undermines our primitive races when they find themselves struggling in the flood of European civilization. But since in the case of the symbiotics the relation between the two races was extremely intimate, far more so than that between the most intimate human beings, the plight of the ichthyoids deeply affected the arachnoids. And in the minds of the ichthyoids the triumph of their partners was for long a source of mingled distress and exultation. Every individual of both species was torn between conflicting motives. While every healthy arachnoid longed to take part in the adventurous new life, he or she longed also, through sheer affection and symbiotic entanglement, to assist his or her ichthyoid mate to have an equal share in that life. Further, all arachnoids were aware of subtle dependence on their mates, a dependence at once physiological and psychological. It was the ichthyoids who mostly contributed to the mental symbiosis the power of self-knowledge and mutual insight, and the contemplation which is so necessary to keep action sweet and sane. That this was so was evident from the fact that already among the arachnoids internecine strife had appeared. Island tended to compete with island, and one great industrial organization with another.
I could not help remarking that if this deep cleavage of interests had occurred on my own planet, say between our two sexes, the favoured sex would have single-mindedly trampled the other into servitude. Such a "victory" on the part of the arachnoids did indeed nearly occur. More and more partnerships were dissolved, each member attempting by means of drugs to supply his or her system with the chemicals normally provided by the symbiosis. For mental dependence, however, there was no substitute, and the divorced partners were subject to serious mental disorders, either subtle or flagrant. Nevertheless, there grew up a large population capable of living after a fashion without the symbiotic intercourse. Strife now took a violent turn. The intransigents of both species attacked one another, and stirred up trouble among the moderates. There followed a period of desperate and confused warfare. On each side a small and hated minority advocated a "modernized symbiosis," in which each species should be able to contribute to the common life even in a mechanized civilization. Many of these reformers were martyred for their faith.
Victory would in the long run have gone to the arachnoids, for they controlled the sources of power. But it soon appeared that the attempt to break the symbiotic bond was not as successful as it had seemed. Even in actual warfare, commanders were unable to prevent widespread fraternization between the opposed forces. Members of dissolved partnerships would furtively meet to snatch a few hours or moments of each other's company. Widowed or deserted individuals of each species would timidly but hungrily venture toward the enemy's camps in search of new mates. Whole companies would surrender for the same purpose. The arachnoids suffered more from the neuroses than from the weapons of the enemy. On the islands, moreover, civil wars and social revolutions made the manufacture of munitions almost impossible.
The most resolute faction of the arachnoids now attempted to bring the struggle to an end by poisoning the ocean. The islands in turn were poisoned by the millions of decaying corpses that rose to the sea's surface and were cast up on the shores. Poison, plague, and above all neurosis, brought war to a standstill, civilization to ruin, and the two species almost to extinction. The deserted sky-scrapers that crowded the islands began to crumble into heaps of wreckage. The submarine cities were invaded by the submarine jungle and by shark-like sub-human ichthyoids of many species. The delicate tissue of knowledge began to disintegrate into fragments of superstition.
Now at last came the opportunity of those who advocated a modernized symbiosis. With difficulty they had maintained a secret existence and their individual partnerships in the more remote and inhospitable regions of the planet. They now came boldly forth to spread their gospel among the unhappy remnants of the world's population. There was a rage of interspecific mating and remating. Primitive submarine agriculture and hunting maintained the scattered peoples while a few of the coral cities were cleared and rebuilt, and the instruments of a lean but hopeful civilization were refashioned. This was a temporary civilization, without mechanical power, but one which promised itself great adventures in the "upper world" as soon as it had established the basic principles of the reformed symbiosis.