"No," he answered, controlling the smile which played about his lips. "But the thing's too serious for joking, as you'll recognise when I've told you all. Well, the squirming reptile, as soon as it saw me, coiled itself round, and with head erect and swelled, commenced hissing viciously. I saw that there was considerable danger in a thing like that being at large, and surmising that it had escaped from the house, having been kept in captivity by somebody fond of such pets, I opened the gate, passed it, not, however, without it making a dart at me, and walking up to the door, rang the bell. The house was in total darkness, but daylight had only just faded, and in many of the houses in the same terrace the gas in the hall had not yet been lit. I rang and rang, but there was no response. In a large house of that character it seemed strange that no servant was about. Indeed, most of the houses there, large, roomy and old-fashioned, let furnished apartments, but this one seemed to be superior to its neighbours, inasmuch as it has a balcony on the first floor, and the small front garden is well-kept in comparison to the patches of bald, weedy grass with which the others are content. As I stood on the doorstep, trying to arouse the inmates, I watched the reptile squirming about the paved path, apparently enjoying its liberty immensely. I placed my ear attentively at the door, trying to detect some sound of movement, but failed, until suddenly I heard within the ringing of an electric bell, subdued by reason of the closed door. It was certain that, after all, some one was within." "Was your summons answered?" I asked eagerly. "No. I rang fully a dozen times, but nobody came. It occurred to me that within might be an invalid, and that, hearing my ring, he or she had rung the bell to the kitchen, but the servants were absent. There was an area door, so I descended, and tried that. The handle yielded. It was unlocked. Therefore I pushed it open and went in, though I was certainly not prepared for the discovery I afterwards made. As I entered, the electric bell commenced ringing again, but it was apparently above me, on the ground floor, and not in the kitchen where I stood. In the cooking-stove the fire was dying out, and there were other signs that servants had been about recently. Finding no one in the basement I ascended to the first floor, when there greeted my nostrils a most delicious fragrance, very similar to the incense which the Roman Catholics burn. The place smelt like the Brompton Oratory." "Well, what did you do next?" I asked, excited at his extraordinary narrative.