Features
The Herculean Lifting Jack
Life in the Beehive
Notes from the Vienna Exposition
Astronomical Notes - July 5, 1873
Improved Farm Gate
Improved Hub Lathe
A Patent Congress
Screw Threads--English and American Proportions
An Imposition Upon the Public
Fire Ladders
Progress of Woman's Rights
Scientific and Practical Information - July 5, 1873
Recent American and Foreign Patents - July 5, 1873
Answers to Correspondents - July 5, 1873
Communications Received - July 5, 1873
Departments
- Departments
Correspondence - July 5, 1873
New Books and Publications - July 5, 1873
Business and Personal - July 5, 1873
Notes and Queries - July 5, 1873
Index of Inventions - July 5, 1873
