A New Method of Observing the N-Rays

Rapid Acceleration of the Subway Trains

The Shocking Disfigurement of the Subway

Scale Divisions and Errors of Graduation

One Hundred and Fifty Miles an Hour on Electric Road

The Personalities of Professor and Madame Curie

Benbow's Airship Flight

The Verant: A New Device for Viewing Photographs

Model of a Continuous-Feed Gas Producer at the St. Louis Fair

The United States Mint at the St. Louis Exposition

By The St. Louis Correspondent of the Scientific American

A Novel Speed Indicator for Automobiles

The Musical Wings of Insects

The Carrara of America

The Start of the Baltic Fleet

Oddities in Invention - November 5, 1904

Solar Motor

Patent Department - November 5, 1904

Cattle Guard for Railway Crossings

Attachment for Bolt-Heading Machines

Business and Personal Wants

Read This Column Carefully,--You will tind inquiries for certain classes of articles numbered in consecutive order. If you manufacture these goods us at once and we will send you the name and address of the party desir- i rig the information...