The face of the old umbrella mender lighted up with a kindly smile as he commented on the strange conduct of my umbrella in slipping a cog just as he happened to come along. I asked him by what evil magic he did the trick and he laughed in a half-hearted way just to be polite, but it was plain that he had long since forgotten how to laugh. As we stepped into the shelter of an adjoining store he sat down on the steps and drawing a threaded needle from beneath the lapel of his thin and faded coat, he began to sew the cover back into its proper place. His fingers were red and numb. A discolored...