Features
A Possible Improvement in House Heating
Prison Reform
Exhaust Steam for Heating Purposes
Scientific and Practical Information - November 28, 1874
Mechanical Aesthetics and Practical Men
To Underground Railway, New York City
The National Academy of Science
Biddle's Hydraulic Jack
Improved Hatchet
Improved Pinking Iron
A Novel Milk Can
The Late John Laird
The Fair of the American Institute
Recent American and Foreign Patents - November 28, 1874
Answers to Correspondents - November 28, 1874
Communication Received - November 28, 1874
Canadian Patents - November 28, 1874
Departments
- Letters
Correspondence - November 28, 1874
- Departments
Business and Personal - November 28, 1874
Index of Inventions - November 28, 1874
