Features
America's Testimonial to France
Profits of the Paris Exposition
An Improved Blanket Harness
An Improved Car Coupling
An Improved Knife Grinding Machine
A Slag Escape for Tuyeres
An Improved Padlock
A Lesson in Repousse
A Venomous Ceylon Serpent
A Modern Stage Trick
Scientific American Building Edition
Index of Inventions- May 24, 1890
To Inventors- May 24, 1890
The Scientific American Publications for 1890
Experimental Science
Departments
- Letters
Correspondence- May 24, 1890
- Recommended
Electrical Books Recently Published
- Departments
Recently Patented Inventions- May 24, 1890
Business and Personal- May 24, 1890
Notes and Queries- May 24, 1890
Patents - May 24, 1890
