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New Iron Bridge

Reduction of Fare on the Baltimore and Ohio Railroad

Turning Lathe Improvements

Safety Valves in Steamboats

The Lion's Tongue

Foreign Correspondence

Planing Machine

Railroad Jubilee

Rhode Island Fair—Paine's Light

Mode of Calculating River Velocity

The State Fair

Boston Science

Air Spring for Cars

Great Exhibition—American Inventions

Great Swimmer

Science and Arts, Improvements &C

A Great Salt Well

New Vault Lights

Cast Iron Fronts of Houses

Improved Machine for Making Combs

Improvements in Expanding Mandrils

Improved Engine Lathe

Improved Water Indicator

Improved Rotary Blower

Improved Machinery for Cutting Shoemakers Jiggers, Spur rowels, &C

Improved Lamp for Burning Camphene

New Way of Fastening Scythes

Parker's Wheels

Interesting Patent Case—Steam Pump

Patent Office Report for 1850—No. 2

Remarks on the Manufacture of Starch and British Gum

Utility of American Inventions

Reclaiming Rice Fields

Tilton's Violin

Haviland & Tuttle's Centre Vent Iron Wheels

List of Patent Claims

More Gold

Postage on Books

Back Numbers and Volumes

New Edition of the Patent Laws

Patent Claims

The Rotary Experiment

New Prospectus

Inventors and Manufacturers

Submarine Explosion

Sound

Petrifactions in Arkansas

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September 27, 1851

See the World from a Different Perspective

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