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Features

The Man Behind the Gun

Forcing Plants by Fire

Winter Insects

Science Notes - February 20, 1904

New Kind of Rays Emitted from the Brain and Nerve Centers

Extensive Submarine Construction Programme for Great Britain

By the English Correspondent of the Scientific American

Photography of Star Shadows

By Emile Guarini

Magnetic Brake for Small Electric Motors

By the Belgian Correspondent of the Scientific American

The Great Baltimore Fire

The Russian Navy

Somersault Monocycle Course

Two New Motor Bicycles

Spring Draft Attachment

Land Anchor

Combined Pack and Riding Saddle

A Novel Third-Rail Protector

The Disk Type of Water Meter

Oddities in Inventions

Business and Personal Wants

Departments

  • Departments

    Correspondence - February 20, 1904

  • Recently Patented Inventions - February 20, 1904

  • Notes and Queries - February 20, 1904

  • New Books, Etc. - February 20, 1904

  • Index of Inventions - February 20, 1904

  • Patents - February 20, 1903

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February 20, 1904

Reanimate Your Brain

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