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Excerpt from On the Influence of Physical Agents on Life It does not appear necessary to say much to urge the importance of the investigation of the influence of a variety of physical agents on life, since it constitutes not only a most essential branch of physiology as a science, but is replete with practical points of vital importance and universal application, seeing they are not less connected with the preservation of health, than with th...

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This is a pre-1923 historical reproduction that was curated for quality. Quality assurance was conducted on each of these books in an attempt to remove books with imperfections introduced by the digitization process. Though we have made best efforts - the books may have occasional errors that do not impede the reading experience. We believe this work is culturally important and have elected to bring the book back into print as part of our cont...

W. F. Edwards is a prolific freelance writer who feels equally at home in various genres. His work includes Science Fiction, Horror, Fantasy, and Rough-and-tumble Action Adventure, all marked by vivid imagery, fast paced story advancement, and hard-hitting action. As a twenty-year veteran of the U.S. Air Force, he has traveled extensively in the United States as well as Europe and the Orient. His duties took him to Shanghai, Tokyo, Manila, Sai...

An important text and, in addition, is a joy to read, being a paragon of lucid and witty exposition." -- Mathematical Gazette

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Edwards is a charming if earnest guide, and the many illustrations of the beautiful cogwheels will fascinate and satisfy." -- New Scientist