Features
The Two Important Problems of the Panama Canal
Photography of Sound Waves
Exhibition of Scientific Devices in Paris
American Association for the Advancement of Science
Marine Steam Turbines
First Oil-Burning Steamship Built in the United States
Another "Heaviest" Locomotive in the World
The Collins Wireless Telephone
Through the Suez Canal on a Man-Of-War
Milk in Powdered Form
A New Curiosity at the New York Aquarium
A Peculiar Lightning-Shattered Tree
Patent Department - July 19, 1902
Electric Lamp
Pipe Puller
New Turbine Engine
Bicycle Stands
Business and Personal Wants
Book Notices
Departments
- Departments
Correspondence - July 19, 1902
Legal Notes - July 19, 1902
Index of Inventions - July 19, 1902
Recently Patented Inventions - July 19, 1902
Patents - July 19, 1902
Notes and Queries - July 19, 1902
