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Good Writing Ink

Green Ink

Improved Seed Planter

Japan Writing Ink

Red Ink

Russian Ink Powder

The Hudson River Railroad

Yellow Ink

Patent Case

Ship's Blacksmith

Steam between Virginia and Europe

A Telegraph to California

The City of Glasgow



Color of the Ocean

Correspondence of the Scientific American

Works on Science and Art

Cotton Factories

Mammoth Steamer on the Missisippi

Gas in Wheeling

New England Industry


Off with the Beards

Plank Roads in Alabama

Lifting Heavy Persons

Sugar and its Uses

Effects of Proportion

Lumber Trade in Maine


Fusible Plug for Boilers

Percussion and Re-Action Water Wheels

Paine's Hydro-Electric Light

Improved Bench Hook for Carpenters and Workers in Wood

Improvement the Manufacture of Sugar

Preparation for Coating Ships

Shingle Machine

American Inventions in England

Tunnelling through the Alps

Charcoal Melted

Curious Discovery

Experiments with Water Wheels

Morse's Air Distributor


New Process of Smelting Iron Ore

Planing Machines—Important Decision of the Supreme Court of the U. S.

Scientific Knowledge

The London Patent Journal and Inventors Magazine

Foreign Forgeries about American In-Inventions

List of Patent Claims

Reform of the Patent Laws

Texas Crops


Back Volumes Scientific American

Gravity Vs. Folly

Expeditious Mode of Reducing Iron Ore into Malleable Iron

To Make Edge-Tools from Cast Steel and Iron

To Inventors and Mechanics


The Employment of Chloroform

Spheroidal State of Water

History of Propellers and Steam Navigation


  • From the Editor

    To Correspondents

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May 11, 1850