That I might fairly appreciate the character of the fog, my companion proposed that we should 'put off into the unknown dark.' Not till I had got into the street, and was groping my way among the pedestrians, instead of watching them in security from the topmost of a flight of steps, could I estimate its real nature. To my bewildered eyes it had the appearance of a solid wall constantly opposing our further progress. The blazing torches that we met were invisible at fifty yards' distance. The tradesmen had closed their stores from fear of thieves, who are remarkably active at such seasons. I afterward learned that in one of the leading thoroughfares a vender of hams and bacon, who had a quantity of goods exposed in front of his open store, was robbed in a most daring manner at an early hour of the evening. The thieves drove a cart to his door, and had nearly filled the vehicle with spoil before they were observed. The tradesman rushed into the street, but the villains had urged on the horse, and although he heard the noise of the wheels, pursuit was an utter impossibility. Robberies on the person are of frequent occurrence at such times, even in the most crowded streets, the security with which the thief attacks a single individual rendering his audacity almost incredible. Before assistance can arrive he has darted across the road, and is in safety at a few yards' distance from the scene of his violence. We were about a quarter of a mile from the hotel, and were on the point of retracing our steps when a cry of 'Fire!' was raised in our vicinity, followed by a rush of several persons in the direction from which the alarm proceeded. In a few minutes all the torches in the street seemed to be collected in one spot, and the crowd grew rapidly. I expected to hear the fire-bell, but I was told that the Londoners have no alarm-bell of any kind. The glare of a conflagration is usually the first warning conveyed to the firemen, when instantly a score of engines are turned out, horses, that are always kept ready harnessed, are fastened to the shafts, and away they go, pell-mell, through the streets, every vehicle, to the Lord Mayor's or Prime Minister's carriage, being compelled to draw aside and give them room to pass. On this occasion their services were not required, the fire being confined to the basement-story of the building in which it had originated, and extinguished by the exertions of the inmates before any material injury was sustained. The crowd that had collected was not a small one, and the congregation of so many torches dispelled in part the oppressive gloom of the fog. But when they had dispersed, and the unnatural darkness was made more palpable by the sudden contrast effected by the withdrawal of such a glare of light, I found that my companion had disappeared. Once I fancied that my name was called, and I thought that he was perhaps searching for me in a wrong direction. I ran, as I conjectured, in pursuit of his retreating