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World's Record for United States Army Gun

Adulteration of Cereal Breakfast Foods

Lack of Progress on the Manhattan Bridge

The Greatest Gem Mine in the World

The Next Challenger for "America's" Cup

Searching for the Real Origin of Species

A Motor Ambulance for the United States Army

By Waldon Fawcett

Sanitation of the City of Washington.--II

The Sewage Disposal System

By Ben Winslow

An Office Building 612 Feet Tall--the Loftiest Masonry Structure in the World

The Marvels of Plant Retardation

By S. Leonard Bastin

The Murray Automatic Page-Printing Telegraph--Its History and Its Progress

Woodworker's Clamp

An Improved Animal Trap

A Portable Head Gate

Safety Stop Valve

Business and Personal Wants


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September 08, 1906

Of Shamrocks and Science

Happy St. Patrick’s Day