Features
The Power of Vibration Harnessed
A New Estimate of the World's Age
When are Laws Discovered?
American Industries.--No. 12
Molecular Chemistry.--No. 1
Edison's Electric Illuminator and Dr. Draper's Experiments Thirty Years Ago
Testing Lubricants
A Few Novelties
The Patentees' Protective Association
Disinfection
New Agricultural Inventions - May 17, 1879
The Detroit River Tunnel and Bridge
Improved Paper Cutting and Winding Machine
New Cut-Off for Steam Engines
The Kanchil, or Pygmy Musk
Natural History Notes
Recent Mechanical Inventions - May 17, 1879
The Calamar
To Inventors - May 17, 1879
Communications Received - May 17, 1879
Departments
- Departments
Notes and Queries - May 17, 1879
Business and Personal - May 17, 1879
New Books and Publications - May 17, 1879
Index of Inventions - May 17, 1879
Patents - May 17, 1879
