The following week the expedition suffered miserably. Snowstorm followed snowstorm, the temperature dropped to twenty-two degrees below the freezing-point, and gales of wind from the east whipped and scourged the struggling men incessantly with myriad steel-tipped lashes. At night the agony in their feet was all but unbearable. It was impossible to be warm, impossible to be dry. Dennison, in a measure, recovered his health, but the ulcer on McPherson's foot had so eaten the flesh that the muscles were visible. Hawes's monotonous chatter and crazy whimperings filled the tent every night. The only pleasures left them, the only breaks in the monotony of that life, were to eat, and, when possible, to sleep. Thought, reason, and reflection dwindled in their brains. Instincts--the primitive, elemental impulses of the animal--possessed them instead. To eat, to sleep, to be warm--they asked nothing better. The night's supper was a vision that dwelt in their imaginations hour after hour throughout the entire day. Oh, to sit about the blue flame of alcohol sputtering underneath the old and battered cooker of sheet-iron! To smell the delicious savour of the thick, boiling soup! And then the meal itself--to taste the hot, coarse, meaty food; to feel that unspeakably grateful warmth and glow, that almost divine sensation of satiety spreading through their poor, shivering bodies, and then sleep; sleep, though quivering with cold; sleep, though the wet searched the flesh to the very marrow; sleep, though the feet burned and crisped with torture; sleep, sleep, the dreamless stupefaction of exhaustion, the few hours' oblivion, the day's short armistice from pain! But stronger, more insistent than even these instincts of the animal was the blind, unreasoned impulse that set their faces to the southward: "To get forward, to get forward." Answering the resistless influence of their leader, that indomitable man of iron whom no fortune could break nor bend, and who imposed his will upon them as it were a yoke of steel--this idea became for them a sort of obsession. Forward, if it were only a yard; if it were only a foot. Forward over the heart-breaking, rubble ice; forward against the biting, shrieking wind; forward in the face of the blinding snow; forward through the brittle crusts and icy water; forward, although every step was an agony, though the haul-rope cut like a dull knife, though their clothes were sheets of ice. Blinded, panting, bruised, bleeding, and exhausted, dogs and men, animals all, the expedition struggled forward. One day, a little before noon, while lunch was being cooked, the sun broke through the clouds, and for upward of half an hour the ice-pack was one blinding, diamond glitter. Bennett ran for his sextant and got an observation, the first that had been possible for nearly a month. He worked out their latitude that same evening. The next morning Ferriss was awakened by a touch on his shoulder. Bennett was standing over him.