Work on the Simplon Tunnel

Increasing Railroad Fatalities

The Mining Debris Problem in California

The Ventilation of the Subway

The Automobile and its Utility in the Industrial Development of Latin America

A Carboy Inclinator

Revolving Scrubbing Machine

An Improved Cattle Guard

Recent Automobile and Motor-Boat Speed Records

The Miethe Color Projector

By Our Berlin Correspondent

The German National Pavilion at St. Louis

The Cultivation of Tea in Ceylon

The Water Organ--A Roman Keyboard Instrument

A Curious Piece of Casting

Tomato Vines Thirty Feet Long

Business and Personal Wants

READ THIS COLUMN CAREFULLY--You will find inquiries for certain classes of articles numbered in consecutive order. If you manufacture these goods write us at once and we will send you the name and address of the party desiring the information...