Four Leading Foreign Exhibits at the World's Fair

The Penetrating Power of "N₁-Rays."

A New Cunarder

The Position of the Range Finder on a Warship

The Automobile Tour to the World's Fair

Renard's New Boiler for Airships

The National Geographic Congress

The Mercury Vapor Lamp for Photographic Work

The United States Marine Corps

The Utilization of Snake Venom in Preparing Anti-Bubonic Serum

The Mount Pilatus Railway, Switzerland

Strange Sights in the Far North

Speed Trial of the Battleship "Ohio."

Cabinet for Storing Phonograph Records

Medical Battery

A Marvelous Automobile Record--1031/2Miles an Hour

The Oldest Known Inhabitant of the Globe

By the St. Louis Correspondent of the Scientific American

Business and Personal Wants