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Why not Revive Preferential Duties, Our Naval Guns and Powder and more

Electrolytic Iron--Can it be Made an Industrial Product?

By Charles F. Burgess

Edouard Branly

The Successful Rival of Mme. Curie at the Paris Académie des Sciences

By P. F. Mottelay

Aviation Exploits at Home and Abroad

Foulois on the Mexican Border; the Flight to the Puy de Dome

Two Recent European Compound Locomotives

A French and a Hungarian Engine

Notes on the Planets, Asteroids, and Occultations of April, 1911, The Current Supplement and more

By Ruel W. Roberts

What do you Think of the Scientific American?

Some Answers to a Question which We Put to Our Readers a Few Weeks Ago

Science in the Current Periodicals and Books

In this Department the Reader will find Brief Abstracts of Interesting Articles Appearing in Contemporary Periodicals at Home and Abroad

Sinking a Battleship at Six Miles

The "San Marcos" ("Texas") Under Fire

Internal-combustion Engines for Industrial Power in the Southern States

By T. C. Butler Jr.

Handy Men's Opinions of Handy Man's Workshop, Cutting Left-hand Threads and more

Calipering Webs and Chambered Holes

By Albert F. Bishop

Machining Balls and Sockets

By H. D. Chapman

An Emergency Bit Brace

By Claude L. Woolley

Kinks from an Amateur's Bench, A Punch Used in Boiler Shops and more

Small Drills

By John D. Adams

Making Concrete Tile

By Charles J. Hackenberg

The Inventor's Department - April 1, 1911

Simple Patent Law; Patent Office News; Inventions New and Interesting

Cucumbers versus Corporations

By Franklin O. King


  • Recommended

    New Books, Etc. - April 1, 1911

  • Departments

    The Heavens in April 1911

  • Recently Patented Inventions - April 1, 1911

  • Notes and Queries—April 1, 1911

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