There sounds aloft a warning scream, The jingling bell gives tongue below, She breasts again the busy stream, And cleaves its murky tide to snow. Bereft of burnished glittering brass, Ungainly bulging fore and aft, Slowly from shore to shore they pass-- The matrons of the river craft. Mr. Glass believes that humorous writing in America has changed more than any other sort. But he does not, as I thought he would, attribute this change to the increased cosmopolitanism of the country, to the influx of people from other lands. "Certainly our ideas of what is funny have changed," he said. "Humor is an ephemeral thing. A generation ago we laughed at what to-day would merely make us ill. The subjects and the methods of the humorists are different. Who nowadays can find a laugh in the pages of Artemus Ward, Philander Q. Doesticks, or Petroleum V. Nasby? Yet in their time these men set the whole continent in a roar. "Contrast two humorists typical of their respective periods--Bill Nye and Abe Martin. I remember many years ago reading a story by Bill Nye which every one then considered tremendously funny. He told how he went downtown and got a shave and put on a clean collar and as he said, 'otherwise disguised himself.' When he got home his little dog refused to recognize him, and several pages were devoted to his efforts to persuade the dog of his identity. Then, failing to convince the dog that he was really the same Bill Nye in spite of his shave and clean collar, he impaled it on a pitchfork and buried it, putting over it the epitaph, 'Not dead, but jerked hence by request.' "Now contrast with that a good example of modern American humor--a joke by Abe Martin which I recently saw. There was a picture of two or three men looking at a tattered tramp, and one of them was represented as saying: 'You wouldn't think to look at him that that man played an elegant game of billiards ten years ago!' "It is an entirely different form of humor, you see. Bill Nye and the writers of his school got their effects by grotesque misspelling, fantastic ideas, and by the liberal use of shock and surprise. The modern humor is subtler, more delicate, and more likely to endure. "I do not think that the fact that America has become more cosmopolitan has anything to do with this altered sense of humor. The American humorists do not select cosmopolitan themes; the best of them are distinctively American in their subject. Irvin Cobb, George Fitch, Kate Douglas Wiggin, Edna Ferber Stewart, who wrote _The Fugitive Blacksmith_--all these people draw their inspiration from purely American phases of the life around them." "What is it, then," I asked, "that has changed American humor?"