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Scientific American Magazine Vol 91 Issue 3

Scientific American Magazine

Volume 91, Issue 3

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Features

New Method of Gold Extraction from Pyrites Used in Italy

How Long Must We Suffer Our Engineering Department at Present the Creature of Party Politics

Corrosion of Steam Boilers

Borax, and Food

A Novel Air Compressor

An Apparatus for Preventing Seasickness

Alfred Gradenwitz

The Plans for the New Manhattan Bridge

The New White Star Liner "Baltic" --the Largest Vessel in the World

By the English Correspondent of the Scientific American

Cascades and Colonnade of States at the Exposition

By the St. Lousis Correspondent of the Scientific American

Lensless Photography

N. R. Briggs

A Compensating Windmill

The New Australian Patent Act

Voting Machine

Hose or Pipe Coupling

Ventilated Eye-Shade

Improved Gage

Chain Clamp

Grain Lifter for Headers

Business and Personal Wants

Departments

Correspondence - July 16, 1904

Recently Patented Inventions - July 16, 1904

Notes and Queries - July 16, 1904

New Books, Etc. - July 16, 1904

Index of Inventions - July 16, 1904

Patents - July 16, 1904