He traveled with her for the rest of the waning day, but when the sun went down and the sky was full of rosy fish, he flew off her horn and hovered in the air before her. "I must take the A train," he said politely. Against the clouds she could see that his velvet wings were ribbed with delicate black veins.

"Farewell," she said. "I hope you hear many more songs" – which was the best way she could think of to say good-by to a butterfly. But instead of leaving her, he fluttered above her head, looking suddenly less dashing and a little nervous in the blue evening air. "Fly away," she urged him. "It's too cold for you to be out." But the butterfly still dallied, humming to himself.

"They ride that horse you call the Macedonai," he intoned absent-mindedly; and then, very clearly, "Unicorn. Old French, unicorne. Latin, unicornis. Literally, one-horned: unus, one, and cornu, a horn. A fabulous animal resembling a horse with one horn. Oh, I am a cook and a captain bold and the mate of the Nancy brig. Has anybody here seen Kelly?" He strutted joyously in the air, and the first fireflies blinked around him in wonder and grave doubt.

The unicorn was so startled and so happy to hear her name spoken at last that she overlooked the remark about the horse. "Oh, you do know me!" she cried, and the breath of her delight blew the butterfly twenty feet away. When he came scrambling back to her, she pleaded, "Butterfly, if you really know who I am, tell me if you have ever seen anyone like me, tell me which way I must go to find them. Where have they gone?"

"Butterfly, butterfly, where shall I hide?" he sang in the fading light. "The sweet and bitter fool will presently appear. Christ, that my love were in my arms, and I in my bed again." He rested on the unicorn's horn once more, and she could feel him trembling.

"Please," she said. "All I want to know is that there are other unicorns somewhere in the world. Butterfly, tell me that there are still others like me, and I will believe you and go home to my forest. I have been away so long, and I said that I would come back soon."

"Over the mountains of the moon," the butterfly began, "down the Valley of the Shadow, ride, boldly ride." Then he stopped suddenly and said in a strange voice, "No, no, listen, don't listen to me, listen. You can find your people if you are brave. They passed down all the roads long ago, and the Red Bull ran close behind them and covered their footprints. Let nothing you dismay, but don't be half-safe." His wings brushed against the unicorn's skin.

"The Red Bull?" she asked. "What is the Red Bull?"

The butterfly started to sing. "Follow me down. Follow me down. Follow me down. Follow me down." But then he shook his head wildly and recited, "His firstling bull has majesty, and his horns are the horns of a wild ox. With them he shall push the peoples, all of them, to the ends of the earth. Listen, listen, listen quickly."

"I am listening," the unicorn cried. "Where are my people, and what is the Red Bull?"

But the butterfly swooped close to her ear, laughing. "I have nightmares about crawling around on the ground," he sang. "The little dogs, Tray, Blanche, Sue, they bark at me, the little snakes, they hiss at me, the beggars are coming to town. Then at last come the clams."

For a moment more he danced in the dusk before her; then he shivered away into the violet shadows by the roadside, chanting defiantly, "It's you or me, moth! Hand to hand to hand to hand to hand…" The last the unicorn saw of him was a tiny skittering between the trees, and her eyes might have deceived her, for the night was full of wings now.

At least he did recognize me, she thought sadly. That means something. But she answered herself, No, that means nothing at all, except that somebody once made up a song about unicorns, or a poem. But the Red Bull. What could he have meant by that? Another song, I suppose.

She walked on slowly, and the night drew close about her. The sky was low and almost pure black, save for one spot of yellowing silver where the moon paced behind the thick clouds. The unicorn sang softly to herself, a song she had heard a young girl singing in her forest long ago.

She did not understand the words, but the song made her think longingly of her home. It seemed to her that she had heard autumn beginning to shake the beech trees the very moment that she stepped out into the road.

At last she lay down in the cold grass and fell asleep. Unicorns are the wariest of all wild things, but they sleep soundly when they sleep. All the same, if she had not been dreaming of home, she would surely have roused at the sound of wheels and jingling coming closer through the night, even though the wheels were muffled in rags and the little bells wrapped in wool. But she was very far away, farther than the soft bells could go, and she did not wake.

There were nine wagons, each draped in black, each drawn by a lean black horse, and each baring barred sides like teeth when the wind blew through the black hangings. The lead wagon was driven by a squat old woman, and it bore signs on its shrouded sides that said in big letters: MOMMY FORTUNA'S MIDNIGHT CARNIVAL. And below, in smaller print: _Creatures of night, brought to light_.

When the first wagon drew even with the place where the unicorn lay asleep, the old woman suddenly pulled her black horse to a stop. All the other wagons stopped too and waited silently as the old woman swung herself to the ground with an ugly grace. Gliding close to the unicorn, she peered down at her for a long time, and then said, "Well. Well, bless my old husk of a heart. And here I thought I'd seen the last of them." Her voice left a flavor of honey and gunpowder on the air.

"If he knew," she said and she showed pebbly teeth as she smiled. "But I don't think I'll tell him." She looked back at the black wagons and snapped her fingers twice. The drivers of the second and third wagons got down and came toward her. One was short and dark and stony, like herself; the other was a tall, thin man with an air of resolute bewilderment. He wore an old black cloak, and his eyes were green.

"What do you see?" the old woman asked the short man. "Rukh, what do you see lying there?"

"Dead horse," he answered. "No, not dead. Give it to the manticore, or the dragon." His chuckle sounded like matches striking.

"You're a fool," Mommy Fortuna said to him. Then, to the other, "What about you, wizard, seer, thaumaturge? What do you see with your sorcerer's sight?" She joined with the man Rukh in a ratchety roar of laughter, but it ended when she saw that the tall man was still staring at the unicorn. "Answer me, you juggler!" she snarled, but the tall man did not turn his head. The old woman turned it for him, reaching out a crablike hand to yank his chin around. His eyes fell before her yellow stare.

"A horse," he muttered. "A white mare."

Mommy Fortuna looked at him for a long time. "You're a fool too, magician," she snickered at last, "but a worse fool than Rukh, and a more dangerous one. He lies only out of greed, but you lie out of fear. Or could it be kindness?" The man said nothing, and Mommy Fortuna laughed by herself.

"All right," she said. "It's a white mare. I want her for the Carnival. The ninth cage is empty."

"I'll need rope," Rukh said. He was about to turn away, but the old woman stopped him.

"The only rope that could hold her," she told him, "would be the cord with which the old gods bound the Fenris-wolf. That one was made of fishes' breath, bird spittle, a woman's beard, the miaowing of a cat, the sinews of a bear, and one thing more. I remember – mountain roots. Having none of these elements, nor dwarfs to weave them for us, we'll have to do the best we can with iron bars. I'll put a sleep on her, thus," and Mommy Fortuna's hands knitted the night air while she grumbled a few unpleasant words in her throat. There was a smell of lightning about the unicorn when the old woman had finished her spell.