Features
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
Sanitation of the City of Washington.--II
The Sewage Disposal System
An Office Building 612 Feet Tall--the Loftiest Masonry Structure in the World
The Marvels of Plant Retardation
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
Departments
- Departments
Correspondence
Index of Inventions
Recently Patented Inventions
Patents
