From the last he cut with Cat's Claw a shape rather like a very fat pear and stitched from it a boot for Hrissa.
When he tried it on the ice-cat's hind paw, she let it be for a little, then began to bite at it rather gently, looking up queerly at the Mouser. He thought, then very carefully bored holes in it for the ice-cat's non-retracting claws, then drew the boot up the leg snugly until the claws protruded fully and tied it there with the drawstring he'd run through slits at the top.
Hrissa no longer bothered the boot. The Mouser made others, and Fafhrd joined in and cut and stitched one too.
When Hrissa was fully shod in her four clawed paw-mittens, she smelled each, then stood up and paced back and forth the length of the ledge a few times, and finally settled herself by the still-warm brazier and the Mouser, chin on his ankle.
The tiny grains of snow were still falling ruler-straight, frosting the ledge and Fafhrd's coppery hair. He and the Mouser began to pull up their hoods and lace their cloaks about them for the night. The sun still shone through the snowfall, but its light was filtered white and brought not an atom of warmth.
Obelisk Polaris was not a noisy mountain, as many are — a-drip with glacial water, rattling with rock slides, and even with rock strata a-creak from uneven loss or gain of heat. The silence was profound.
The Mouser felt an impulse to tell Fafhrd about the living girl-mask or illusion he'd seen by night, while simultaneously Fafhrd considered recounting to the Mouser his own erotic dream.
At that moment there came again, without prelude, the rushing in the silent air and they saw, clearly outlined by the falling snow, a great flat undulating shape.
It came swooping past them, rather slowly, about two spear-lengths out from the ledge.
There was nothing at all to be seen except the flat, flakeless space the thing made in the airborne snow and the eddies it raised; it in no way obscured the snow beyond. Yet they felt the gust of its passage.
The shape of this invisible thing was most like that of a giant skate or stingray four yards long and three wide; there was even the suggestion of a vertical fin and a long, lashing tail.
"Great invisible fish!" the Mouser hissed, thrusting his hand down in his half-laced cloak and managing to draw Scalpel in a single sweep. "Your mind was most right, Fafhrd, when you thought it wrong!"
As the snow-sketched apparition glided out of sight around the buttress ending the ledge to the south, there came from it a mocking rippling laughter in two voices, one alto, one soprano.
"A sightless fish that laughs like girls — most monstrous!" Fafhrd commented shakenly, hefting his ax, which he'd got out swiftly too, though it was still attached to his belt by a long thong.
They crouched there then for a while, scrambled out of their cloaks, and with weapons ready, awaited the invisible monster's return, Hrissa standing between them with fur bristling. But after a while they began to shake from the cold and so they perforce got back into their cloaks and laced them, though still gripping their weapons and prepared to throw off the upper lacings in a flash. Then they briefly discussed the weirdness just witnessed, insofar as they could, each now confessing his earlier visions or dreams of girls.
Finally the Mouser said, "The girls might have been riding the invisible thing, lying along its back — and invisible too! Yet, what was the thing?"
This touched a small spot in Fafhrd's memory. Rather unwillingly he said, "I remember waking once as a child in the night and hearing my father say to my mother, '…like great thick quivering sails, but the ones you can't see are the worst.' They stopped speaking then, I think because they heard me stir."
The Mouser asked, "Did your father ever speak of seeing girls in the high mountains — flesh, apparition, or witch, which is a mixture of the two; visible or invisible?"
"He wouldn't have mentioned 'em if he had," Fafhrd replied. "My mother was a very jealous woman and a devil with a chopper."
The whiteness they'd been scanning turned swiftly to darkest gray. The sun had set. They could no longer see the falling snow. They pulled up their hoods and laced their cloaks tight and huddled together at the back of the ledge with Hrissa close between them.
Trouble came early the next day. They roused with first light, feeling battered and nightmare-ridden, and uncramped themselves with difficulty while the morning ration of strong herb tea and powdered meat and snow were stewed in the same pot to a barely uncold aromatic gruel. Hrissa gnawed her rewarmed hare's bones and accepted a little bear's fat and water from the Mouser.
The snow had stopped during the night, but the Obelisk was powdered with it on every step and hold, while under the snow was ice — the first-fallen snow melted by yesterday afternoon's meager warmth on the rock and quickly refrozen.