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Features

Sciences

New Railroad Cars

Gas Explosion

Columbus and Cleveland Railroad

Survey of a Rail Route to California

Improvement in Apparatus for Feeding Steam Boilers

A Good Safe

Culture of Tomatoes

Coolidge Said Not to be Dead

An English Clock in Constantinople

Law of Patents in Prussia

Land Speculation

Turkish Education

Supply of Coal

Influence of the Press

Cockroaches

Sub-Rosa

Improved Method of Tempering Edge Tools

To Editors and Publishers in the U. S

Coal in Massachusetts

Cholera.--Review of the Opinions on the Subject

Wheeling (Va.,) Silk Manufactory

Lightning Conductors

The Crank

Source of Electricity

Solution of Problems on Page 288, No. 36

To Treat Peach Trees

New Self-Acting Railroad Switch

New Electric Telegraph

Improvement in Power Looms

Electric Light for Daguerreotypes

Onapman's Balance Rotary Slide Valve

Lyman's Patent Steam and Water Guage

New Wagon Wheel

Important Discovery

Steam Plough

Dissolving Bones by Steam

American Carpets

Our London Patrons

Street Cleaning

Simpson's Propeller

Potatoe Sugar

Ancient Pyramid of Balls

Scientific Memoranda

The Office of the Bat

The End of Prudence

Expenses of British Colonies

Cocoa Nuts

Motion

Earth the Natural Friend of Man

List of Patents

The History of the Solar System

Portable Provisions for Travellers and Hunters

History of the Rotary Engine

Patent Laws--Subjects of Patents

Cure for Cholera

Parsnips

A New Discovery to Separate Potatoes of Different Qualities

The Scalpel

Departments

  • From the Editor

    To Correspondents

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June 16, 1849

Confronting Common Wisdom