Features
Compartment Ships
A New Comet
A Tree that Keeps a Standing Army
The Effective Power of Steam Engines
Progress of Underground Railways in London
The Oremation Question
Another New Motor
Improved Portable Oiler
Improved Combination Scissors
An Instantaneous Life Preserving Raft
James Bogardus
Prevention in Place of Cure
Scientific and Practical Information - May 2, 1874
Strain Diagrams--What They Are and What They Tell Us
Safety Bell Signal for Railways
Christie's Railroad Detachable Claw Bar
Improved Mitering Machine - May 2, 1874
The Pyrophone
The Steam Siren or Fog Horn
Recent American and Foreign Patents - May 2, 1874
The English Telegraphs
Answers to Correspondents - May 2, 1874
Communications Received - May 2, 1874
Canadian Patents - May 2, 1874
Departments
- Letters
Correspondence - May 2, 1874
- Departments
Business and Personal - May 2, 1874
Index of Inventions - May 2, 1874
Patents - May 2, 1874
