Yokohama, Japan I SET out from my home in the port city of Yokohama early in the afternoon last Friday, and shortly before 3 p.m. I checked into my hotel in the Shinjuku neighborhood of Tokyo. I usually spend three or four days a week there to write, gather material and take care of other business. The earthquake hit just as I entered my room. Thinking I might end up trapped beneath rubble, I gra