Skip to main content


Improvement in Carriage Springs

To Make Various Kinds of Inks in the best Manner

Railways in Italy

New York and Boston Railroad

The Great Railway in Egypt

Purifying Oils

A Monster Engine

Opposition to Robjohn's Balloon

Coal in Dutchess Co., NY

A Metallic Rudder

Bridging the Nile

Railroad in Spain

Imposing Stones

Special Correspondence of the Scientific American

Lard Oil

The Cotton Crop

Linen from Unrotted Flax—Errors Corrected

Machine for Gathering Clover Seed

Machine for Cutting Veneers

Improved Lock

Improved Door Spring

Improvement in Filters

Horse-Power Ditching Machine

Steamboat Question

Petition for the Extension of a Patent

Steam Superseded

Worcester Mechanics' Fair

What Inventors are Doing for the World

Important Patent Cases—Planing Machines

Short Conversations on Mechanics—No. 3

French and English Black Broadcloth

Scientific Memoranda

List of Patent Claims

Steam Communication between New York and Genoa

New Edition of the Patent Laws

Back Numbers and Volumes

American and Foreign Patent Agency

Self-Acting Lock for Blinds and Window Shutters

Tartar on the Teeth

New Prospectus to Mechanics

Inventors and Manufacturers

Chloroform and Etherization in Child-Birth

Quick Work

New Calculating Machine


  • From the Editor

    To our Subscribers

  • To Correspondents

Purchase To Read More

Already purchased this issue? Sign In to Access
Select Format
August 23, 1851

Of Shamrocks and Science

Happy St. Patrick’s Day