As, immersed in thought, I watched the snakes, there came faintly to my ears what sounded like a woman's scream; and I wondered, indifferently, what new horror was occurring in this hateful city. Whatever it was, I could neither know nor prevent; and so it made little impression upon me, especially in view of a sudden, new interest in the snakes. * * * * * One of the larger of them, a great, hideous creature some twenty feet in length, had raised his head to the level of the table and was watching me with its lidless, staring eyes. It seemed to me that I could almost read that dim, reptilian brain reacting to the presence of food. It laid its head flat upon the table; and, its body undulating slowly, it glided toward me across the table top. I glanced quickly about the room, vainly seeking some avenue of escape. There, evenly spaced in the periphery of the chamber, were the seven doors, stationary now; for the floor had ceased to revolve shortly after the light had come on again. Behind one of those identical doors lay life; behind each of the other six, death. Upon the floor, between them and me, were the snakes. They had not distributed themselves evenly over the entire area of the flagging. There were spaces across which one might run swiftly without encountering more than an occasional reptile; yet a single one, were it venomous, would be as fatal as a score of them; and I was harassed by knowledge of my ignorance of the nature of a single one of the numerous species represented. The hideous head of the serpent that had raised itself to the table top was gliding slowly toward me; the greater part of its length extended along the floor, moved in undulating waves as it crept after the head. As yet it had given no indication of the method of its attack. I did not know if it might be expected to strike first with poison fangs, to crush within its constricting folds, or merely to seize in widespread jaws and swallow as I had seen snakes, in my boyhood, swallowing frogs and birds. In any event the outlook was far from pleasing. I shot a quick glance toward the doors. Should I risk all on a single cast of the die with fate? The repulsive head was moving closer and closer to me; I turned away from it, determined to run for the door the way to which was clearest of snakes. As I glanced quickly about the room I saw a comparatively open avenue leading toward a door just beyond the spiked couch and chair. One door was as good as another--I had one chance in seven! And there was no way to differentiate one door from another. Life might lie behind this door, or death. Here was, at least, a chance. To remain where I was, the certain prey of that hideous reptile, offered no chance whatever.