Book review ["Radio Theory and Operating" by Mary Texanna Loomis. Fifth Edn.]

Summary form only given, as follows. Review of "Radio Theory and Operating," by Mary Texanna Loomis. Fifth Edition, 1006 pages with 803 figures (price $4.25. Loomis Publishing Company, Washington, DC, USA). This is an elementary book treating a great variety of radio subjects, as well as other subjects closely related to radio. The strong points of this book are the many circuit diagrams, charts and tables, descriptions of modern applications of radio, especially those of popular interest, amateur and commercial operating, and receiving set trouble shooting. In the discussion of elementary electricity and magnetism and principles of radio, which consume many pages, the treatment is superficial and unsatisfactory. Errors and incorrect uses of scientific terms are prevalent.