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A Road Made of Charcoal

Improved Method to Produce Continuous Rotary Motion for Mills From a Steam Engine

Squirrels Reared by a Cat

New Haven and New York Railroad

Gentle Words--Loving Smiles

Hook'e Universal Joint

Plank Roads

Oh, Be Kindly

Pineapples in Florida

A Curiosity

Hydraulic Engine

Weather, Fruits, &C

The Canal Locks at Lockport

The Benefit of a Strong Beaver

Propeller Sarah Sands

Gas Works Explosion

Medical Convention at Boston

Heavy Damages for Breach of Privilege in Partnership

Great Seizure of Counterfelting Apparatus

A New Poison

The Chemical Character of Steel

To Render Paper Hangings Washable When up

Passage of Hydrogen Gas Through Solid Bodies

Dyeing Home Made Clothes

New Process of Manufacturing Carbonate or White Lead

Life Preserving Mattress

Combined Chimney and Screw

Another Sewing Machine

New Composition for Sign Letters

Morin's Friction Brake to Test the Power of Water Wheels

Improvement in Band Boxes

Improved Water Gate for Canal Locks

Improved Steam Regulator

Patents Issued

Great Pall Factory

A Characteristic of the Age

Huge Casting of a Propeller Wheel

Wages in Germany

Steam and Water Power

Our Prize Essay

Iron Stores

Great Shafts

Pressure of the Ocean

Our London Patrons

Back Volumes of the Scientific American


Hoe's Printing Presses


The Upas Tree

A Criticism

National Importance of Health

List of Patents

The Best Mechanical Paper in the World!

Razor Paper

Agricultural Document

Useful Problems


  • New Electrical Instrument

  • From the Editor

    To Our Contemporaries

  • To Correspondents

  • Letters

    Correspondence of the Sci. American

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May 12, 1849

Confronting Common Wisdom