“My good friend,” I said, somewhat ironically, I fear, “I am not disposed to question your right to harbor as many spooks as you find agreeable to your taste and consistent with your notions of companionship; that is no business of mine. But being just a plain man of affairs, mostly of this world, I find spooks needless to my peace and comfort. I am going to my hotel, where my fellow-guests are still in the flesh.” It was not a very civil speech, but he manifested no feeling about it. “Kindly remain,” he said. “I am grateful for your presence here. What you have heard to-night I believe myself to have heard twice before. Now I _know_ it was no illusion. That is much to me—more than you know. Have a fresh cigar and a good stock of patience while I tell you the story.” The rain was now falling more steadily, with a low, monotonous susurration, interrupted at long intervals by the sudden slashing of the boughs of the trees as the wind rose and failed. The night was well advanced, but both sympathy and curiosity held me a willing listener to my friend’s monologue, which I did not interrupt by a single word from beginning to end. “Ten years ago,” he said, “I occupied a ground-floor apartment in one of a row of houses, all alike, away at the other end of the town, on what we call Rincon Hill. This had been the best quarter of San Francisco, but had fallen into neglect and decay, partly because the primitive character of its domestic architecture no longer suited the maturing tastes of our wealthy citizens, partly because certain public improvements had made a wreck of it. The row of dwellings in one of which I lived stood a little way back from the street, each having a miniature garden, separated from its neighbors by low iron fences and bisected with mathematical precision by a box-bordered gravel walk from gate to door.