Features
Some Interesting Facts about the Development of the Edison Storage Battery
Battleship or Torpedo Boat
The Current Supplement
Action of Radium on Metals
Experiments with Three-Phase Electric Arcs
The Russian Ice-Breaker "Ermack"
High-Velocity 6-Inch Wire-Wound Gun for the United States Army
Growth of Our Navy
The Louisiana Purchase Exposition--Its Scope and its Purpose
The Largest Clock in the World
A New Electric Clock
Patent Department
The Hydraulic Letter Press
Strainer for Locomotives
A Combined Third-Rail Contact Shoe and Sleet Remover
A New Wrench
A Novel Mail-Bag Catcher
Business and Personal Wants
Departments
- Departments
The Heavens in May - May 7, 1904
Recently Patented Inventions - May 7, 1904
Notes and Queries - May 7, 1904
New Books, Etc. - May 7, 1904
Index of Inventions - May 7, 1904
