Some days they did not make ten miles.

On other days they were unable to get started at all.

And on no day did they succeed in making more than half the distance used by the men as a basis in their dog-food computation.
It was inevitable that they should go short on dog-food.

But they hastened it by overfeeding, bringing the day nearer when underfeeding would commence.

The Outside dogs, whose digestions had not been trained by chronic famine to make the most of little, had voracious appetites.
And when, in addition to this, the worn-out huskies pulled weakly, Hal decided that the orthodox ration was too small.