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Dr. Le Plongeon's Latest and most Important Discoveries among the Ruined Cities of Yucatan

Protests from Manufacturers

Dr. Augustus Le Plongeon's Latest and most Remarkable Discoveries in Yucatan

American Standard for Boilers

Suggestions for Inventors

Improvements in Men and Machines

The Cheapness of Cost

Memorandum Book and Pad

Improved Torpedo Boat

New Lathe Chuck

Saw Tooth

The Atmospheric Turbine

The Sectional Steamer Le Stanley

Fire Escape

Animal Trap

Mechanical Inventions - April 19, 1884

Engineering Inventions - April 19, 1884

Miscellaneous Inventions - April 19, 1884


  • Letters

    Correspondence - April 19, 1884

  • Recommended

    New Books and Publications - April 19, 1884

  • Departments

    Business and Personal - April 19, 1884

  • Notes and Queries - April 19, 1884

  • Index of Inventions - April 19, 1884

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