The Fastest Warship Afloat

The Lessons of the Parker Building Fire

Pennsylvania Railroad Delays Improvements

A Year's Progress on the Panama Canal

The Enlargement of the Assouan Dam

A Strip of Territory Added to Alaska

A $25,000 Prize for a Mathematical Solution

Chess in Three Dimensions

By Our Berlin Correspondent

A Motor Chair Invented by a Woman

A Universal Bench Vise

Erection of the Manhattan Bridge Across the East River

How Our Measures of Length are Tested

An Open-Air Veneer Machine

How We Know That the Earth Rotates

A Famous Taxidermist and His Methods