THREE:"Lord only knows," answered Shorty indifferently, feeling around for his pipe. "A feller never knows when he's goin' to have to fight rebel cavalry any more'n he knows when he's goin' to have the toothache. The thing just happens, and that's all there is of it.""'Tention!" commanded Si. "Fall in single rank 'cordin' to your size. Tall boys on the right, short ones on the left, medium in the center. Gid Mackall, you're the tallest. You can go there to the corner o' the platform and let the others form on you."