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SA Supplements Vol 54 Issue 1399supp

SA Supplements

Volume 54, Issue 1399supp

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Features

The Union Electric Semaphore Signal

Professor Langley's Bolometer

How Soap is Colored

F. A. Emmel

Lithopone

Influence of the Academie Des Sciences on Improvements in Measuring Time

The Pilgrimage to Mecca

A New Turbine Engine

Facts about Honey

Korea's Curious Currency

Aerodromes

S. D. Mott

Business Opportunities in Portuguese Colonies

Our Ice Cream Bill

The Kincaid Locomotive Stoker

International Alcohol Exposition of Lighting and Heating Apparatus

The Chemical Factor in Human Progress

Peter T. Austen

German Processes and Machinery for Briquette Manufacture

The Destruction of Ants

Excavations in Palestine

Surveying in Central American

The Maladies of Wines

Determinate Causes of the Formation of the Visual Organs

Horse Breeding in Germany and France

Recent Coal Labor Statistics

Trade Suggestions from United States Consuls

Patents!

Trade Notes and Recipes