Scientific American Magazine

To Make Crystallized Soda Alum

Superiority of American Wool

To Cure Warts

Signals

Potato Rot

Lead Mining in Missouri

The New Bible House

Railroads in the United States

New Rolling Mill

The Steam Fire Engine

Miscellaneous Items

The Crystal Palace

Trade and Commerce of St. Louis

Massachusetts Coal

Meteorology

Electric Globes of Fire in a Saw Mill

Improvements in Dyeing

Price of Diamonds

An Erect Position

Curious Geological Formations

Extravagant Profits of Lead Mining

Turbine Water Wheel—Parker's Claims

Percussion Cap Primer

Improvement in Joining Stones

Cards for Hooks and Eyes

Mill Stone Pick

Improved Steam Gun

Improved Straw Cutter

Improved Let-off Motion

Modellers Clay

Events of the Week

Repairs to the Ericsson—Let the Truth be Told

Withdrawals from the Patent Office

Fuel and Mechanical Power

Pneumatic Telegraph

Aerial Navigation by Steam without Balloons

The Woodworth Patent Suit in North Carolina Terminated

New Commissioner of Patents

French Patents

Principles of Patents—Important Decision

An Extensive Sugar Refinery

Manufacture of Matches

White Sheep Skins for Door Mats

Jewelry

Great Fishing

Mechanics

To Correspondents