Leacock believes that a sense of humor can be cultivated, that development of the theory and technique of humor can be taught. And he proceeds to prove his point in an analysis of basic elements of humor, types and classifications, history and changes of emphasis. He illustrates throughout with classic examples, as well as brief bits from unfamiliar sources. He discusses the leading humorists, including Dickens and ark Twain, Bret Harte and Josh Billings, O. Henry and many others. He warns against the pitfalls of the after-dinner story teller and the professional humorist. There's certainly substance there. Draw to attention of college English departments, Public Libraries, etc.