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Features

From Raft to Steamship

By Randolph I. Geare

Sound Signals

By E. Price-Edwards

Evolution of Ships

Some Notes on Steam Turbines

By F. J. Warburton

The Paris Automobile Show.–II

Tests and Constitution of Portland Cement

By A. D. Elbers

Texas Oil for Locomotive Fuel

Mounting Photographs on Glass

More Light in the Dark Room

By B. H. Wordslay

Lumiere Process of Color Photography

Work at World's Fair Site of St. Louis

The Pressure of Luminous Rays

Turquoises from Ruins

Gray Hair and Emotional States; an Anthropological Note

By Robert Jones

The Zodiacal Light

By Arthur K. Bartlett

The Max Accumulator

Fire Dangers from Electric Lights

John Loudon McAdam, the Road-Maker

The Nature and Cause of Pearl Formation

Our Coffee Industry

Imitative Birds

Chestnut Cultivation in France

Trade Suggestions from United States Consuls

Patents!

Selected Formulæ

Departments

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    April 19, 1902

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