Features
The Railways of the United States
Four Footed Motion
Government Aid to Scientific Investigation
Some of the Uses of Paraffin
Refrigerating Mixtures and Their Physiological Effects
New Law Concerning Copyrights for Labels
Scientific and Practical Information - July 11, 1874
Progress of the Fireless Locomotive
The Effect of Air Pressure on Animal Life
The Gravitation Compass
A Navigable Diving Bell
Improved Steam Engine
Astronomical Notes - July 11, 1874
Observatory of Vassar College.
Practical Mechanism Number IV.- July 11, 1874
A Novel Needle
Taper Sleeve Pulley and Wheel Fastener
A New Water Pitcher
Various Methods of Cooling Air
Medical Notes - July 11, 1874
Recent American and Foreign Patents - July 11, 1874
Answers and Correspondents - July 11, 1874
Communication Received - July 11, 1874
Canadian Patents - July 11, 1874
Departments
- Letters
Correspondence - July 11, 1874
- Recommended
New Books and Publications - July 11, 1874
- Departments
Business and Personal - July 11, 1874
Index of Inventions - July 11, 1874
Patents - July 11, 1874
