Features
A Floral Map of the United States at the St. Louis Exposition
Future Extension of the Subway System
Borings on a Coral Reef
The United States in 1903
Concrete Piling
A New Gasoline Motor for Airships
A New System of Rapid Telegraphy
A Single-Cylinder, Reversible, Four-Cycle Gasoline Engine
The New Vickers-Maxim 9.2-Inch Wire-Wound Gun
The Abruzzi Polar Expedition.—I
The Hudson River Tunnel
Harrow Tooth and Simple Fastening Device
Patent Department
Combination Lock for Umbrellas
Valve Mechanism for Locomotives
Ore-Sampling Machine
Improved Windmill
Mail Box for Rural Free Delivery Routes
Bending Device
Business and Personal Wants - March 26, 1904
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Departments
- Departments
Science Notes - March 26, 1904
Correspondence - March 26, 1904
Recently Patented Inventions - March 26, 1904
Notes and Queries - March 26, 1904
Index of Inventions - March 26, 1904
New Books, Etc. - March 26, 1904
Patents - March 26, 1904
