The inhabitants were divided into an elite minority known as the Transmigrants and a majority known as the Receptacles. Within these categories were a number of occupational and specialized strata and the two classes were not in practice separate: Transmigrants acted as Receptacles and Receptacles became Transmigrants.
  To show the system in operation: Here is an old Transmigrant on his deathbed. He has selected his future Receptacle parents, who are summoned to the death chamber. The parents then copulate, achieving orgasm just as the old Transmigrant dies so that his spirit enters the womb to be reborn. Every Transmigrant carries with him at all times a list of alternative parents, and in case of accident, violence, or sudden illness, the nearest parents are rushed to the scene. However, there was at first little chance of random or unexpected deaths since the Council of Transmigrants in Waghdas had attained such skill in the art of prophecy that they were able to chart a life from birth to death and determine in most cases the exact time and manner of death.
  Many Transmigrants preferred not to wait for the infirmities of age and the ravages of illness, lest their spirit be so weakened as to be overwhelmed and absorbed by the Receptacle child. These hardy Transmigrants, in the full vigor of maturity, after rigorous training in concentration and astral projection, would select two death guides to kill them in front of the copulating parents. The methods of death most commonly employed were hanging and strangulation, the Transmigrant dying in orgasm, which was considered the most reliable method of ensuring a successful transfer. Drugs were also developed, large doses of which occasioned death in erotic convulsions, smaller doses being used to enhance sexual pleasure. And these drugs were often used in conjunction with other forms of death.
  In time, death by natural causes became a rare and rather discreditable occurrence as the age for transmigration dropped. The Eternal Youths, a Transmigrant sect, were hanged at the age of eighteen to spare themselves the coarsening experience of middle age and the deterioration of senescence, living their youth again and again.
  Two factors under mined the stability of this system. The first was perfection of techniques for artificial insemination. Whereas the traditional practice called for one death and one rebirth, now hundreds of women could be impregnated from a single sperm collection, and territorially oriented Transmigrants could populate whole areas with their progeny. There were sullen mutters of revolt from the Receptacles, especially the women. At this point, another factor totally unforeseen was introduced.
  In the thinly populated desert area north of Tamaghis a portentous event occurred. Some say it was a meteor that fell to earth leaving a crater twenty miles across. Others say that the crater was caused by what modern physicists call a black hole.
  After this occurrence the whole northern sky lit up red at night, like the reflection from a vast furnace. Those in the immediate vicinity of the crater were the first to be affected and various mutations were observed, the commonest being altered hair and skin color. Red and yellow hair, and white, yellow, and red skin appeared for the first time. Slowly the whole area was similarly affected until the mutants outnumbered the original inhabitants, who were as all human beings were at the time: black.
  The women, led by an albino mutant known as the White Tigress, seized Yass-Waddah, reducing the male inhabitants to slaves, consorts, and courtiers all under sentence of death that could be carried out at any time at the caprice of the White Tigress. The Council in Waghdas countered by developing a method of growing babies in excised wombs, the wombs being supplied by vagrant Womb Snatchers. This practice aggravated the differences between the male and female factions and war with Yass-Waddah seemed unavoidable.
  In Naufana, a method was found to transfer the spirit directly into an adolescent Receptacle, thus averting the awkward and vulnerable period of infancy. This practice required a rigorous period of preparation and training to achieve a harmonious blending of the two spirits in one body. These Transmigrants, combining the freshness and vitality of youth with wisdom of many lifetimes, were expected to form an army of liberation to free Yass-Waddah. And there were adepts who could die at will without any need of drugs or executioners and project their spirit into a chosen Receptacle.
  I have mentioned hanging, strangulation, and orgasm drugs as the commonest means of effecting the transfer. However, many other forms of death were employed. The Fire Boys were burned to death in the presence of the Receptacles, only the genitals being insulated, so that the practitioner could achieve orgasm in the moment of death. There is an interesting account by a Fire Boy who recalled his experience after transmigrating in this manner:
  "As the flames closed round my body, I inhaled deeply, drawing fire into my lungs, and screamed out flames as the most horrible pain turned to the most exquisite pleasure and I was ejaculating in an adolescent Receptacle who was being sodomized by another."
  Others were stabbed, decapitated, disemboweled, shot with arrows, or killed by a blow on the head. Some threw themselves from cliffs, landing in front of the copulating Receptacles.
  The scientists at Waghdas were developing a machine that could directly transfer the electromagnetic field of one body to another. In Ghadis there were adepts who were able to leave their bodies before death and occupy a series of hosts. How far this research may have gone will never be known. It was a time of great disorder and chaos.
  The effects of the Red Night on Receptacles and Transmigrants proved to be incalculable and many strange mutants arose as a series of plagues devastated the cities. It is this period of war and pestilence that is covered by the books. The Council had set out to produce a race of supermen for the exploration of space. They produced instead races of ravening idiot vampires.
  Finally, the cities were abandoned and the survivors fled in all directions, carrying the plagues with them. Some of these migrants crossed the Bering Strait into the New World, taking the books with them. They settled in the area later occupied by the Mayans and the books eventually fell into the hands of the Mayan priests.
  The alert student of this noble experiment will perceive that death was regarded as equivalent not to birth but to conception and go on to infer that conception is the basic trauma. In the moment of death, the dying man' s whole life may flash in front of his eyes back to conception. In the moment of conception, his future life flashes forward to his future death. To reexperience conception is fatal.