The officer rose to his feet, trembling. The familiar sensation of an abraded shin recalled his dazed faculties. Pulling himself together he ran rapidly obliquely away from the cliff to a point distant from its foot; thereabout he expected to find his man; and thereabout he naturally failed. In the fleeting instant of his vision his imagination had been so wrought upon by the apparent grace and ease and intention of the marvelous performance that it did not occur to him that the line of march of arial cavalry is directly downward, and that he could find the objects of his search at the very foot of the cliff. A half-hour later he returned to camp.