midnight
He 's got grit for a dozen men . '' Summer came on . The snow disappeared , save on the far peaks of the Rockies to the east . The days lengthened till there was no darkness , the sun dipping at midnight , due north , for a few minutes beneath the horizon . Linday never let up on Strang . He studied his walk , his body movements , stripped him again and again and for the thousandth time made him flex all his muscles . Massage was given him without end , until Linday declared that Tom Daw , Bill , and the brother were properly qualified for Turkish bath and osteopathic hospital attendants .