At first I regarded little but the road before me, and then abruptly my attention was arrested by something that was moving rapidly down the opposite slope of Maybury Hill. At first I took it for the wet roof of a house, but one flash following another showed it to be in swift rolling movement. It was an elusive vision a moment of bewildering darkness, and then, in a flash like daylight, the red masses of the Orphanage near the crest of the hill, the green tops of the pine trees, and this problematical object came out clear and sharp and bright.