Appreciation of the Naval Number

Bridges Versus Tunnels

Transoceanic Wireless Telegraphy

Annual Report of the Work of the Observatory of Paris for 1900

A Pendulum Propeller

The Slaby-Arco Portable Field Equipment for Wireless Telegraphy

The Pennsylvania-Long Island Connecting Railroad Tunnels

New Submarines for the United States Navy

The Combined Third and Traction Rail System of Haulage

Alcohol Automobiles at the Paris Alcohol Exhibition

The Gobron-Brilli By Our Paris Correspondent

Method of Lighting the Great Water Tank at the Nouveau Cirque, Paris

Patent Department

Simple Interesting Inventions

Business and Personal Wants