_The Throwers of Thunder_ It is doubtful if Walter Harkness heard or consciously saw that fleeing tribe. He saw only the glorious sunlight and its sparkling reflection upon the stream; and in his nostrils was the scent of roasting meat to rouse him to a frenzy. For seven Earth days he and Chet had kept account of the hours. How long after that they had followed their stumbling course he could not have told. Time ceased to be measured in hours and days; rather was it reckoned in painful progress a foot at a time up …