Om 50 Great Flying and Underwater Perpetual Motion Machines
50 Great Flying and Underwater Perpetual Motion Machines Just what it says. This is the companion volume to 100 Great Perpetual Motion Machines. In this text are found many visual descriptions of certain types of water devices, amphibious elements, and flying apparatuses, which have a reputation for possibly working related to perpetual motion. Many of the inventions are of the author's own creation. Also included are a number of inventions attributed to friends of the family.
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