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P 20 58
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The Fourth Dimension of space is a phrase that haunts the memory; it is often heard, yet little understood. In this slender volume, the author has attempted to explain what is meant by it and to usher the reader into some of those fascinating halls of thought to which it serves as a door. Although the explanation follows known and conventional lines, it is hoped that there is enough new and original material to justify the book, and enough simplicity of presentation to justify its title, A Primer of Higher Space.
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