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Scientific American Magazine Vol 93 Issue 14

Scientific American Magazine

Volume 93, Issue 14

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Features

Chains Versus Cables in the Manhattan Bridge

Building the Erie Barge Canal

Another North River Tunnel

Trade Marks on Copyrighted Works

Magnetic Survey of the North Pacific Ocean

The Current Supplement

Vanderbilt Cup Elimination Trials

Patents for Exported Articles—Practical Advice to Manufacturers

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

G. H. Darwin

An Early Typewriter

Pie-Making by Machinery

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

H. A. Crafts

The Making of a Felt Hat

Combined Rack and Adhesion Locomotive for South Africa

Littlefield and the Artificial Creation of Life

Charles Edward Tingley

A New Method of Identifying Criminals

L. Ramakers

A New Projection System for Lectures

Alfred Gradenwitz

A New Apparatus for Automatically Making and Breaking an Electric Circuit

Emile Guarini

A Novel Device for Preventing Automobiles from Skidding

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