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Features

Construction of Roman Camps as Illustrated by the Remains at Lambessa, North Africa

By The Paris Correspondent of the Scientific American

Domestic Life in Persia

By Ella C. Sykes

New Stereopticon Apparatus

The Development of Marconi's System of Wireless Telegraphy

By Emile Guarini

Salt and its Physiological Uses

By M. A. Dastre

Crossing the Street

The Rug Industry of the Caucasus and of the Transcaspian Countries

Death Valley

The Most Desolate Spot in North America—its History, Inhabitants. and Products

By Don Maguire

The Gum-Bichromate Photo-Printing Process

An English Report of the West Indian Eruptions

The use of Alcohol as Fuel and Illuminant

Results of Tests of Alcohol Motors in Germany

The Babylonian and Assyrian Legends of the Creation

Oil-Cooled Gasoline Engines

The Red Deer in New Zealand

Artificial Production of Rubies by Fusion

Method of Culture of Sea Island Cotton

Combinations of Alumina with Chromium Sesquioxide: Constitution of the Ruby

Trade Notes and Recipes

Trade Suggestions from United States Consuls

Selected Formulæ

Patents!

Departments

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    April 25, 1903

    Think Outside the Gift Box