Now, it is surprising how far a wolverine can shift his clumsy-looking body over snow in an hour, especially if he has reasons.  This one had good reasons, and he was no fool.  He knew quite well the kind of little hell he had made for himself behind there, and he did not stay to let the snow cover him.  He traveled as if he were a machine and knew no fatigue; and the end of that journey was a hole in a hollow among rocks.

Dawn was throwing a wan light upon all things when he thrust his short, sharp muzzle inside that hole, to be met by a positively hair-raising volley of rasping, vicious growls.

He promptly ripped out a string of ferocious, dry, harsh growls in return, and for half-a-minute the air became full of growls, horrible and blood-curdling, each answering each.

Then he lurched in over the threshold, and coolly dodged a thick paw, with tearing white claws, that whipped at him with a round-arm stroke out of the pitch-darkness.  The stroke was repeated, scraping, but in nowise hurting his matted coat, as he rose on his hindlegs and threw himself upon the striker.

Followed a hectic thirty seconds of simply diabolical noises, while the two rolled upon the ground, grappling fiendishly in the darkness.  Then they parted, got up, growled one final roll of fury at each other, fang to fang, and, curling up, went to sleep.  But it was nothing, only the quite usual greeting between Gulo and his wife.  They were a sweet couple.

There appeared to be no movement, or any least sign of awakening, on the part of either of the couple between that moment and sometime in the afternoon, when, so far as one could see, Gulo suddenly rolled straight from deep sleep out on to the snow, and away without a sound, at his indescribable shamble and at top speed.

Mrs. Gulo executed precisely the same amazing maneuver, and at exactly the same moment, as far as could be seen, on the other side, and shuffled off into the forest.  They gave no explanation for so doing.  They said never a word—­nothing.  One moment they were curled up, asleep; the next they had gone, scampered, apparently into the land of the spirits, and were no more.  Nor did there seem to be any reason for this extraordinary conduct except—­except——­ Well, it is true that a willow-grouse, white as the snowy branch he sat upon, did start clucking somewhere in the dim tree regiments, a snipe did come whistling sadly over the tree-tops, and a raven, jet against the white, did flap up, barking sharply, above the pointed pine-tops; but that was nothing—­to us.  To the wolverines it was everything, a whole wireless message in the universal code of the wild, and they had read it in their sleep.  Through their slumbers it had spelt into their brains, and instantly snapped into action that wonderful, faultless machinery that moved them to speed as if automatically.

Then the chase began, grim, steady, relentless, dogged—­the chase of death, the battle of endurance.