Volume 9, Issue 3
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Features
The Hot Air Engine in France
Large Locomotive Shop
Tunneling the Falls of the Ohio
Improvement in Car Trucks
Mascher's Stereoscope
Oil of Hops
Recent Foreign Inventions
The Imponderable Agents--No. 1
The Cooper Institute--A Noble Man
Important Notice
Rope Machinery
List of Patent Claims
Labor and Money Power
Singnlar Plan for a New Line of Steamships
Preservation of the Eyes
An Important Fact in Connection with the Yellow Fever
The Old Crystal Palace in a New Place
Our Prizes
Improved Steam Hammer
Improved Bedstead
Treenails
New Picking Machine
Washing and Steaming Cotton Goods
New Metallic Packing
Mechanics Fairs
Improvement in Cotton Gins
Sewing Machine Controversy
Electrotyping
Reaping Machines before the Royal Society
Colonial Patents
Explosive Fluids--A Warning
The Steamship Golden Age--The Ignorance of Journalists
Fine Writing
To Correspondents
A Chapter of Suggestions, &c
Mechanics
Manufacturers and Inventors