Features
The Remington Works Ilion, NY
Diamond Cutting in New York
Fastenings for Neck Ties, Scarfs, Etc.
Measuring the Velocity of Rotation
The Baltimore Boiler Inspection Law
The Discovery and History of the Chromosphere
Inextinguishable Signal Light
Heard's Ventilating Hat
Combined Cast Iron and Wrought Iron Arch Girders
Frictional Gearing - April 13, 1872
Scientific and Practical Information - April 13, 1872
Umbrella Frames
Proposed City Railroad
Death Of Samuel F. B. Morse
The Great Sewing Machine Job before Congress
Sewing Machines and their Effect Upon Health
A Trades Union Tirade
Lightning Rods
Spiritualism Answered by Science
Recent American and Foreign Patents - April 13, 1872
Departments
- From the Editor
Answers to Correspondents - April 13, 1872
- Recommended
New Books and Publications - April 13, 1872
- Departments
Business and Personal - April 13, 1872
Notes and Queries - April 13, 1872
Index of Inventions - April 13, 1872
