Scientific American Magazine Vol 107 Issue 25

Scientific American Magazine

Volume 107, Issue 25

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Features

Bursting of an Army 14-inch Gun, Are Inventions Ever Willfully Suppressed and more

Capturing Frost Flowers

S. Leonard Bastin

Sending Photographs Over a Telephone Wire

The Improved Bélin Apparatus

Jacques Boyer

The Pier Problem at the Port of New York

How Manhattan Has Encroached on the Hudson River

Solution of the Steel Rail Problem

A Method of Producing Sound Ingots

The Submarine Sledge, Panama Pacific Exposition and more

By the Berlin Correspondent of the Scientific American

Steady Rests for Small Lathes

Albert F. Bishop

Why a Plane "Iron" has a "Cap"

W. D. Graves

Holding Circular Saws While Sharpening

William Grötzinger

Some Workshop Suggestions

B. F. Dashiell

Twelve Thousand Postage Stamps Per Minute, A Network Protector

Thomas D. Gannaway

Simplified High-potential Apparatus, The Maxim Motorboat Silencer and more

By Our Berlin Correspondent

Departments

Correspondance - December 21, 19

Inventions New and Interesting - December 21, 1912

Recently Patented Inventions - December 21, 1921

Notes and Queries - December 21, 1921

New Books, Etc. - December 21, 1921