Features
A New Gas Exhauster Governor
Contamination of Drinking Water
Pah-Gosa Springs, Colorado
The North-Northwest
Pluck and Energy Sufficient Capital for Pioneers
Defeat of the Cochrane Patents
Recent American Patents
New Cuff Holder
A Magnetized Watch
Recent Mechanical Inventions
A New Portable Engine
A New Sewer Trap
Amateur Mechanics
New Drag Sawing Machine
Jones' New Press Machine and Process
Machinery for Making Shingles
Miscellaneous Inventions
Scarus Quacamaia, or Great American Parrot Fish
The Mara
Ancient Keys
Communications Received - July 12, 1879
Departments
- Departments
Correspondence - July 12, 1879
Business and Personal - July 12, 1879
Notes and Queries - July 12, 1879
New Books and Publications - July 12, 1879
Index of Inventions - July 12, 1879
Patents - July 12, 1879