“I arrived in London two days ago,” said the American, “and I engaged a room at the Bath Hotel. I know very few people in London, and even the members of our embassy were strangers to me. But in Hong Kong I had become great pals with an officer in your navy, who has since retired, and who is now living in a small house in Rutland Gardens opposite the Knightsbridge barracks. I telegraphed him that I was in London, and yesterday morning I received a most hearty invitation to dine with him the same evening at his house. He is a bachelor, so we dined alone and talked over all our old days on the Asiatic Station, and of the changes which had come to us since we had last met there. As I was leaving the next morning for my post at Petersburg, and had many letters to write, I told him, about ten o’clock, that I must get back to the hotel, and he sent out his servant to call a hansom. “For the next quarter of an hour, as we sat talking, we could hear the cab whistle sounding violently from the doorstep, but apparently with no result. “‘It cannot be that the cabmen are on strike,’ my friend said, as he rose and walked to the window. “He pulled back the curtains and at once called to me. “‘You have never seen a London fog, have you?’ he asked. ‘Well, come here. This is one of the best, or, rather, one of the worst, of them.’ I joined him at the window, but I could see nothing. Had I not known that the house looked out upon the street I would have believed that I was facing a dead wall. I raised the sash and stretched out my head, but still I could see nothing. Even the light of the street lamps opposite, and in the upper windows of the barracks, had been smothered in the yellow mist. The lights of the room in which I stood penetrated the fog only to the distance of a few inches from my eyes. “Below me the servant was still sounding his whistle, but I could afford to wait no longer, and told my friend that I would try and find the way to my hotel on foot. He objected, but the letters I had to write were for the Navy Department, and, besides, I had always heard that to be out in a London fog was the most wonderful experience, and I was curious to investigate one for myself. “My friend went with me to his front door, and laid down a course for me to follow. I was first to walk straight across the street to the brick wall of the Knightsbridge Barracks. I was then to feel my way along the wall until I came to a row of houses set back from the sidewalk. They would bring me to a cross street. On the other side of this street was a row of shops which I was to follow until they joined the iron railings of Hyde Park. I was to keep to the railings until I reached the gates at Hyde Park Corner, where I was to lay a diagonal course across Piccadilly, and tack in toward the railings of Green Park. At the end of these railings, going east, I would find the Walsingham, and my own hotel.