Features
American Supremacy in the Iron Trade
New Bills for the Regulation of Print and Label Registration
Jubilee Anniversary of the American Science Association
The Navies of the World
Ptomaine Poisoning
A Locomotive and its Equivalent in Raw Materials
An Improved Car Coupling
A Dredge Ejector
The New Steel Arch at Niagara
An Automatically Closing Umbrella
The Key of the Gulf--The Tortugas Islands
Pueblo Arts and Industries.–II
Leonardo Da Vinci's High Angle Mortar
Departments
- Recommended
New Books, Etc. - April 16, 1898
- Departments
Recently Patented Inventions - April 16, 1898
Business and Personal - April 16, 1898
Notes and Queries - April 16, 1898
Index of Inventions - April 16, 1898
