The man spoke, in a hoarse voice: "Why do they hunt you?"

Ern took courage from the fact that the man had not killed him out of hand. "They called me 'Freak' and drove me forth."

" 'Freak" The Three considered Ern's scalp. "You are a Two."

"The Ones cut my head to make scars, then sold me to the Twos." Ern felt the weals. On either side and at the center, almost as prominent as the scars, were the crests of an adult, three in number. They were growing apace; even had he not compromised himself, the Twos must have found him out on the first occasion he removed his cap. He said humbly: "It appears that I am a 'Freak' like yourself."

The Three made a brusque sound. "Come with me."

They walked back through the grove, to a path which slanted up the bluff, then swung to the side and entered a valley. Beside a pond rose a great stone hall flanked by two towers with steep conical roofs-in spite of age and dilapidation a structure to stagger Ern's imagination.

By a timber portal they entered a courtyard which seemed to Ern a place of unparalleled charm. At the far end boulders and a great overhanging slab created the effect of a grotto. Within were trickling water, growths of feathery black moss, pale cycads, a settle padded with woven reed and sphagnum. The open area was a swamp-garden, exhaling the odors of reed, water-soaked vegetation, resinous wood. Remarkable, thought Ern, as well as enchanting: neither the Ones nor the Twos contrived except for an immediate purpose.

The Three took Ern across the court into a stone chamber, also half-open to the refreshing drizzle, carpeted with packed sphagnum. Under the shelter of the ceiling were the appurtenances of the Three's existence: crocks and bins, a table, a cabinet, tools and implements. The Three pointed to a bench, "Sit." Ern gingerly obeyed. "You are hungry?"

"No."

"How was your imposture discovered?" Ern related the circumstances which led to his exposure. The Three showed no disapproval, which gave Ern encouragement. "I had long suspected that I was something other than a Two'."

"You are obviously a Three," said his host. "Unlike the neuter Twos, Threes are notably masculine, which explains your inclinations for the One-woman. Unluckily there are no Three females." He looked at Ern. "They did not tell how you were born?" "I am the fusion of One-eggs."

True. The One-woman lays eggs of alternate sex,in clutches of three. The pattern is male-female-male; such is the nature of her organism. A sheath forms on the interior of her ovipositor; as the eggs emerge, a sphincter closes, to encapsulate the eggs. If she is careless, she will fail to separate the eggs and will put down a clutch with two eggs in contact The male breaks into the female shell; there is fusion; a Two is hatched. At the rarest of intervals three eggs are so joined. One male fuses with the female, then, so augmented, he breaks into the final egg and assimilates the other male. The result is a male Three."

Ern recalled his first memory. "I was alone. I broke into the male-female shell. We fought at length."

The Three reflected for a lengthy period. Ern wondered if he had committed an annoyance. Finally the Three said, "I am named Mazar the Final. Now that you are here I can be known as 'the Final' no longer. I am accustomed to solitude; I have become old and severe; you may find me poor company. If such is the case, you are free to pursue existence elsewhere. If you choose to stay, I will teach you what I know, which is perhaps pointless activity, since the Twos will presently come in a great army to kill us both."

"I will stay," said Ern. "As of now I know only the ceremonies of the Twos, which I may never put to use. Are there no other Threes?"

"The Twos have killed all-all but Mazar the Final."

"And Ern."

"And now Ern."

"What of sea-left and sea-right, beyond the rivers, along other shores? Are there no more men?"

"Who knows? The Wall of Storm confronts the Wall of Dark; the Narrow Land extends-how far? Who knows? If to infinity then all possibilities must be realized; then there are other Ones, Twos and Threes. If the Narrow Land terminates at Chaos, then we may be alone."

"I have traveled sea-right and sea-left until wide rivers stopped me," said Ern. "The Narrow Land continued without any sign of coming to an end. I believe that it must extend to infinity; in fact it is hard to conceive of a different situation."

"Perhaps, perhaps," said Mazar gruffly. "Come." He conducted Ern about the hall, through workshops and repositories, chambers crowded with mementoes, trophies and nameless paraphernalia.

"Who used these marvelous objects? Were there many Threes?"

"At one tune there were many," intoned Mazar, in a voice as hoarse and dreary as the sound of wind. "It was so long ago that I cannot put words to the thought. I am the last"

"Why were there so many then and so few now?"

"It is a melancholy tale. A One-tribe lived along the shore, with customs different from the Ones of the swamp. They were a gentle people, and they were ruled by a Three who had been born by accident. He was Mena the Origin, and he caused the women to produce clutches with the eggs purposely joined, so that a large number of Threes came into being. It was a great era. We were dissatisfied with the harsh life of the Ones, the rigid life of the Twos; we created a new existence. We learned the use of iron and steel, we built this hall and many more; the Ones and Twos both learned from us and profited."

"Why did they war upon you?"

"By our freedom we incurred their fear. We set out to explore the Narrow Land. We traveled many leagues sea-left and sea-right. An expedition penetrated the Dark-Chill to a wilderness of ice, so dark that the explorers walked with torches. We built a raft and sent it to drift under the Wall of Storm. There were three Ones aboard. The raft was tethered with a long cable; when we pulled it back the Ones had been riven by dazzle and were dead. By these acts we infuriated the Two preceptors. They declared us impious and marshaled the Ones of the swamp. They massacred the Ones of the shore, then they made war on the Threes. Ambush, poison, pitfall: they showed no mercy. We killed Twos; there were always more Twos, but never more Threes.

"I could tell long tales of the war, how each of my comrades met death. Of them all, I am the last. I never go beyond the wall and the Twos are not anxious to attack me, for they fear my fire gun. But enough for now. Go where you will, except beyond the wall, where the Twos are dangerous. There is food in the bins; you may rest in the moss. Reflect upon what you see; and when you have questions, I will answer."

Mazar went his way. Ern refreshed himself in the falling water of the grotto, ate from the bins, then walked upon the gray meadow to consider what he had learned. Here Mazar, becoming curious, discovered him. "Well then," asked Mazar, "and what do you think now?"

"I understand many things which have puzzled me," said Ern. "Also I regret leaving the One-girl, who showed a cooperative disposition."

"This varies according to the individual," said Mazar. "In the olden times we employed many such as domestics, though their mental capacity is not great"

"If there were Three-women, would they not produce eggs and eventually Three-children?"

Mazar made a brusque gesture. "There are no Three-women; there have never been three women. The process allows none to form."

"What if the process were controlled?"

"Bah. The ovulation of One-women is not susceptible to our control."

"Long ago," said Ern, "I watched a One-woman preparing her nest. She laid in clutches of three. If sufficient eggs were collected, rearranged and joined, in some cases the female principle would dominate."

"This is an unorthodox proposal," said Mazar, "and to my knowledge has never been tried. It cannot be feasible ...