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Many of the essays are written under the pen name of Dr. Theophrastus Seuss, which would later be shortened to Dr. Seuss. There is a long piece where Uncle Theophrastus explains to his nephew Quackenbush "The Facts of Life." Another delightful story tells of a corporation that decides to forego profit to manufacture items of the highest "Quality."
A series of one-page Little Educational Charts attempt to explain the most absurd aspects of things like the importance of Simplified Spelling (see the book's title for a sample) and other one-page essays on imaginary uses of birds and beasts and whimsical word meanings were obviously humorous magazine pieces. The book ends with a series of ads for a spray insecticide called FLIT that all contain the catchphrase, "Quick Henry, the Flit."
While the writing has suffered a bit from the passage of time, the artistic humor of Geisel's drawings remains, and provides good background for those who only know his children's books.