Features
The Telephone and the Berliner Patent
An Improved Phosphate Washer
An Inexpensive Window Awning
Bridges on the Transandine Railway
American Improved Locomotive Valve
An Improved Wrench
A Locomotive Stone Breaker
How Sunken Vessels are Raised
Improvements in Boston Harbor
The Great Exposition Entrances to the Fisheries and the Mining Buildings
Gold and Silver Refining from Jewelers' Sweepings
Automatic Photography
Departments
- Recommended
New Books and Publications- March 18, 1893
- Departments
Recently Patented Inventions- March 18, 1893
Business and Personal- March 18, 1893
Notes and Queries- March 18, 1893
Index of Inventions- March 18, 1893
To Inventors- March 18, 1893
