If he had expected a flight of steps to some wide gulf of ultimate abomination, Willett was destined to be disappointed; for amidst that foetor and cracked whining he discerned only the brick-faced top of a cylindrical well perhaps a yard and a half in diameter and devoid of any ladder or other means of descent. As the light shone down, the wailing changed suddenly to a series of horrible yelps; in conjunction with which there came again that sound of blind, futile scrambling and slippery thumping. The explorer trembled, unwilling even to imagine what noxious thing might be lurking in that abyss; but in a moment mustered up the courage to peer over the rough-hewn brink; lying at full length and holding the torch downward at arm’s length to see what might lie below. For a second he could distinguish nothing but the slimy, moss-grown brick walls sinking illimitably into that half-tangible miasma of murk and foulness and anguished frenzy; and then he saw that something dark was leaping clumsily and frantically up and down at the bottom of the narrow shaft, which must have been from twenty to twenty-five feet below the stone floor where he lay.