A second cry arose, piercing the silence with needlelike shrillness. Both men located the sound. It was to the rear, somewhere in the snow expanse they had just traversed. A third and answering cry arose, also to the rear and to the left of the second cry.

'They're after us, Bill,' said the man at the front.

His voice sounded hoarse and unreal, and he had spoken with apparent effort.

'Meat is scarce,' answered his comrade. 'I ain't seen a rabbit sign for days.'

Thereafter they spoke no more, though their ears were keen for the hunting-cries that continued to rise behind them.

At the fall of darkness they swung the dogs into a cluster of spruce trees on the edge of the waterway and made a camp. The coffin, at the side of the fire, served for seat and table. The wolf-dogs, clustered on the far side of the fire, snarled and bickered among themselves, but evinced no inclination to stray off into the darkness.

'Seems to me, Henry, they're stayin' remarkable close to camp,' Bill commented.

Henry, squatting over the fire and settling the pot of coffee with a piece of ice, nodded. Nor did he speak till he had taken his seat on the coffin and begun to eat.

'They know where their hides is safe,' he said. 'They'd sooner eat grub than be grub. They're pretty wise, them dogs.'

Bill shook his head. 'Oh, I don't know.'

His comrade looked at him curiously. 'First time I ever heard you say anythin' about their not bein' wise.'

'Henry,' said the other, munching with deliberation the beans he was eating, 'did you happen to notice the way them dogs kicked up when I was a-feedin' 'em?'

'They did cut up more'n usual,' Henry acknowledged.

'How many dogs've we got, Henry?'

'Six.'