Features
Specially for our Readers
Steel Uniformity
The Efficiency of Fluid in Vapor Engines
Methods of Estimating Distances
An Improved Plow
Feed Mechanism for Roller Mills
Rope Serving Machine
Claw Bar
Improvements in Upright Pianos
A Novel Fire Escape
A New Elevated Tramway Without Rails
The Carbon Blast
The Colladon Fountain
Dr. Otto Gmelin's Cupola
Special - December 6, 1884
Agricultural Inventions - December 6, 1884
Miscellaneous Inventions - December 6, 1884
Engineering Inventions - December 6, 1884
Scientific American Catalogue - December 6, 1884
The Scientific American Supplement - December 6, 1884
Departments
- Letters
Correspondence - December 6, 1884
- Recommended
New Books and Publications - December 6, 1884
- Departments
Business and Personal - December 6, 1884
Notes and Queries - December 6, 1884
Index of Inventions - December 6, 1884
