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The Oldest Eggs in the World

The Romance of the Lock

Its Development, and the Means Employed to Beat It, From the Earliest Days

By Edward H. Smith

Power from Mercury Vapor

Astonishing Fuel Economy Brought About Through Ingenious Combination of Mercury Vapor and Steam

Our First Rigid Airship the "Shenandoah"

The Design, Construction and Successful Trials of the Great Airship Built by the United States Navy

Our First Rigid Airship the “Shenandoah”

The Design, Construction and Successful Trials of the Great Airship Built by the United States Navy

Our Psychic Investigation Advances

We Find a Medium Whom We Cannot Characterize as a Conscious Fraud

By J. Malcolm Bird

Our Abrams Investigation—V

A Statement of Our Findings to Date and the Prospects of Further Demonstrations and Tests

By Austin C. Lescarboura

Our Abrams Investigation—V

A Statement of Our Findings to Date and the Prospects of Further Demonstrations and Tests

By Austin C. Lescarboura

What is Sleep?

How Hafnium Was Discovered

A Corkscrew Railway

Remolding Our Civic Clay

How the City Planner Guides the Previously Misdirected Growth of Our Communities

By A. G. Ingalls

A Motor That Solves the Power-Factor Problem, Making Plants Work Overtime by Means of Electric Light

The Size of the Universe

Animal Sculpture of 25,000 Years Ago

The Recent Discoveries in the Water-Blockaded French Cavern of Montespan

By Illustrated London News

Head-Hunting in Papua

Driving Locomotives with a Charge of Steam

Suspending the Motor Car Body on Air

The Twin Trails Highway

London Fogs

High Explosives that will not Freeze

Cold-Proof Powders that Eliminate the Dangers of Thawing Dynamite

Stage Scenery on the Building Block Principle

Recent Aeronautic Investigations

Einstein and the Recent Eclipse

Exit the Pullman Car Hammock

One Law Versus Forty-Eight

The Practicability and the Necessity of Uniform Motor-Vehicle Legislation in All the States

By Scientific American Staff

The Head Hunters of New Guinea

By Frank Hurley

The Heat of the Earth

Apparatus with Which Deep Temperatures Are Determined

By Otto Wilson

Flivvers of the Air That Approach 100 Miles Per Gallon

Lichens—Impossible Plants

Lessons of the Japanese Earthquake

Types of Construction which Survived and Recommendations for Reconstruction A Resumé of Engineering Opinion

The Continuous-Traffic Lift Bridge

Dog Distemper

Bad Coal Ruins Family Wash

Ninety-Eight Tons of Steel in One Piece

Cutting a Traffic Tangle With a $20,000,000 Bridge

A Museum in the Open Air

The Display of Trees and Woody Plants at the Arnold Arboretum

By A. A. Hopkins

Educating Workmen to Accident Prevention

Gliders

A Caterpillar Sprocket Wheel With Removable Teeth

Machine for Determining the Psychology of Color

Motor-Driven "Big Wheels"

The Pasteurization of Milk

The Blue Ribbon of the Atlantic

Rapid Growth in Size and Speed of Turbine-Driven Ocean Liners

Seeking a Non-Destructive Method for Testing Wire Rope

Truck News From Abroad

A Hack-Saw Blade That Improves With Age

Doubling the Field of Vision of the Movies

With Camera and Chisel

Still Another Form of Photo-Sculpture in Which Simplicity and Efficiency Go Hand in Hand

By J. Hammond Smith

Sulfur Corrosion

Why Watch Springs Break

A Device That Takes Care of Worn Brake Linings and Shoes

A Giant Among Airplanes

The Story of Steel—II

Missabe—The Greatest Iron Mines and the Most Economical Mining in the World

The Story of Steel--II

Missabe--The Greatest Iron Mines and the Most Economical Mining in the World

Departments

  • Departments

    Our Point Of View, February 1924

  • The Heavens in February, 1924

  • Inventions New and Interesting, February 1924

  • Recently Patented Inventions, February 1924

  • The Scientific American Digest, February 1924

  • The Service of the Chemist, February 1924

  • Radio Notes, February 1924

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February 1924

Scientific American Space & Physics