For days, strange premonitory noises had run across the shivering surface of the ice. Through the foggy nights, a muffled intermittent booming went on under the wild scurrying stars. Now and then a staccato crackling ran up the icy reaches of the river, like the sequent bickering of Krags down a firing line. Long seams opened in the disturbed surface, and from them came a harsh sibilance as of a line of cavalry unsheathing sabres.
