The ghost I believed to be still in the upper halls of the house, and now that I was in a position to watch the ladder by which he had entered I felt confident that I had cut off his retreat. I was surveying the cellar, when I heard faint sounds in a new direction. Far away under the house, and remote from the secret steps, some one was moving toward me, and rapidly, too! The ghost that I believed to have disappeared into the fourth-floor hall must then have changed the line of his retreat and descended by one of the regular stairways. I blew out my candle and stood with my back to the wall of the long corridor on which opened the various store-rooms, the heating plant, laundry and other accessories of the modern house. My ghost was coming in haste,--a haste that did not harmonize with the stately tread of the spooks of popular superstition. A slower pace and I should doubtless have fled before him; but quick light steps echoed in the dark corridor, and I gathered courage from the thought that ghosts create echoes no more than they cast shadows. As the steps drew nearer I prepared myself to spring upon him. I must unconsciously have taken a step, for he paused suddenly, stood still for a moment, then turned and scampered back the way he had come. After him I went as fast as I could run. The cement-paved corridor was four or five feet wide, and I plunged through the dark at my best speed. At the end of the corridor I was pretty certain of my quarry, and I made ready to grapple with him. Then as I plunged into the wall my hands touched a man's face and for a moment clutched the collar of his coat. He had been waiting for me to strike the wall, and as he slipped out of my grasp he ran back toward the coal cellar. I had struck the wall with a force that knocked the wind out of me, but I got myself together with the loss of only an instant and renewed pursuit. I had no fear but that, if he attempted to reach the open by means of the coal-hole, I should catch him on the ladder, and I sprinted for all I was worth to make sure of him. My fleeting grasp of the man's collar and the agility with which he had slipped from my clasp had settled the ghost question, and I had now resolved the intruder into a common thief. As we neared the coal cellar I increased my pace, and felt myself gaining on him; though in the dark I saw nothing until I glimpsed the faint light from the coal-hole.