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The Selden Patent Case

The “Wash” of an Aeroplane

The Return of Halley's Comet

Science

Electricity

Engineering

Hudson and His Exploration of the Hudson River

The Four Periods of Hudson River History

Fulton and His Life Work

Electrical Fireballs: What Are They?

Supersensitiveness of the Blind

What is Heat Lightning?

Does Municipal Ownership Pay

How Finger and Thumb Marks Were Discovered Through a Photographic Proof

Development of the Hudson River Steamboat

John Fitch

American Steamboats Prior to the Clermont

European Steamboats "Prior" to the "Clermont"

John Stevens

William Symington

The American Walking-Beam Engine

Three Hundred Years of New York

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September 25, 1909

Confronting Common Wisdom