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Building the Erie Barge Canal

Another North River Tunnel

Trade Marks on Copyrighted Works

Magnetic Survey of the North Pacific Ocean

Chains Versus Cables in the Manhattan Bridge

Is Radium the Cause of the Sun's Heat and Light?

By G. H. Darwin

Vanderbilt Cup Elimination Trials

The Current Supplement

Patents for Exported Articles—Practical Advice to Manufacturers

Pie-Making by Machinery

An Early Typewriter

High-Speed Steam Yacht and Power-Boat Races

180-Ton Shear Legs for the British Naval Dockyard

Heliotropism Induced by Radium

Evolution of the California Clam-Shell Dredger

By H. A. Crafts

The Making of a Felt Hat

Combined Rack and Adhesion Locomotive for South Africa

Littlefield and the Artificial Creation of Life

By Charles Edward Tingley

A New Method of Identifying Criminals

By L. Ramakers

A New Apparatus for Automatically Making and Breaking an Electric Circuit

By Emile Guarini

A Novel Device for Preventing Automobiles from Skidding

A New Projection System for Lectures

By Alfred Gradenwitz

Business and Personal Wants


  • Departments

    Recently Patented Inventions - September 30, 1905

  • Notes and Queries

  • New Books, Etc. - September 30, 1905

  • Index of Inventions - September 30, 1905

  • Patents - September 30, 1905

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September 30, 1905

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