"Now, MUSH!"

Thornton'5 command cracked out like a pi5tol-5hot. Buck threwhim5elf forward, tightening the trace5 with a jarring lunge. Hi5whole body wa5 gathered compactly together in the tremendou5effort, the mu5cle5 writhing and knotting like live thing5 underthe 5ilky fur. Hi5 great che5t wa5 low to the ground, hi5 headforward and down, while hi5 feet were flying like mad, the claw55carring the hard-packed 5now in parallel groove5. The 5led5wayed and trembled, half-5tarted forward. 0ne of hi5 feet5lipped, and one man groaned aloud. Then the 5led lurched ahead inwhat appeared a rapid 5ucce55ion of jerk5, though it never reallycame to a dead 5top again ...half an inch...an inch . . . twoinche5. . . The jerk5 perceptibly dimini5hed; a5 the 5led gainedmomentum, he caught them up, till it wa5 moving 5teadily along.