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Features

Final Lessons of the German American War Game

Vertical Transportation

The Blood of All Races

The British Battleship Construction Programme for 1903

By Our London Correspondent

“Callitypy”

Vulcanized Timber in England

Some Modern Appliances for Life Saving at Fires

Remarkable Diversion of Niagara's Waters

By Orrin E. Dunlap

Electric Track Welding

By Waldon Fawcett

Further Curie Experiments with Radium

A New Star

Volcanic Dust Falls in Georgia

The Selden Patent and the Automobile Trust

The Advantages of in-Turning Screws on Warships

Pupin and Jentsch on Trans-Oceanic Telephony

News from the British Antarctic Expedition-- A New Record

Narragansett-the Largest of Tank Ships

The New Buffalo Harbor Breakwater

Next Week's Special Automobile and Yachting Number

Discovery of the Tomb of Thothmes IV

Patent Department

Staple Puller

Diaphragm Meter and Exerciser

Automatic Toy

Women Inventors

Safety Heel for Footwear

Railway Improvements

Business and Personal Wants

Read this Column Carefully.-You wili find inquiries for certain classes of articles numbered in consecutive order. If you manufacture these goods write us at once and we will send you the name and address of the party desiring the information. In every case it is necessary to give the number of the inquiry. Munn&Co

Departments

  • Photographic Experiment with Nature's Lenses

  • Departments

    Index of Inventions - April 4, 1903

  • Miscellaneous - April 4, 1903

  • Recently Patented Inventions - April 4, 1903

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April 04, 1903