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“Consigned to the Scrap Heap”

Casualties--Military and Civil

Electric Railways and Population

The George Washington University

By N. Monroe Hopkins

The Current Supplement

Cables that Withstand 90,000 Volts

The Progress of Aviation Since 1891

A Simple Rim for Detachable Tires

A Swimming School for Cavalry Horses

By W. G. Fitz Gerald

A Home-Made Wireless Signaling Transmitter

By A. Frederick Collins

Salt Making on San Francisco Bay

By Enos Brown

The New Blackwell's Island Bridge

The Barossa Dam, Southern Australia

By Emile Guarini

Lineman's Support

Patent Department

An Ink-Controlled Fountain Drawing and Writing Pen

Hose Coupling

Rail-Joint Connection

Railway Gage

The New Trade Mark Law

Oddities in Invention

Business and Personal Wants


  • Departments

    The Heavens in April - April 1, 1905

  • Correspondence - April 1, 1905

  • Recently Patented Inventions - April 1, 1905

  • Notes and Queries - April 1, 1905

  • Index of Inventions - April 1, 1905

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