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Features

The Potter's Clay Industry of Cornwall

By Harold J. Shepstone

The Duration of Geological Time

Loǵistics

By William C. Bartlett

Production of Piǵ Iron by Electricity

From Consul Stuart J. Fuller, Gothenburg, Sweden

The Marine Diesel Enǵine

A Reversible Engine that Can Be Used Like a Steam Engine

Flaws and “Diseases” of Metals

Their Metallographic Diagnosis By the Paris Correspondent of the Scientific American

Practical Aspects of Printinǵ Teleǵraphy—V

An Inventor on the Difficulties to be Encountered and the Way to Overcome Them

By Donald Murray

The Circumference of a Circle of Given Radius

By Mabel Sykes

The Electric Locomotives for the Lötschberg Tunnel

A New Highroad Between Italy and Western Europe

International Association of Chemical Societies

The Evolution of the Umbrella

The Great Antiquity of this Commodity

By F. M. Feldhaus

Protectinǵ the Aeronaut from Liǵhtninǵ

How the Dangers from Atmospheric and Other Causes May Be Mitigated

Determininǵ the Salinity of Sea Water

How to Determine the Day of the Week of Previous Dates

By Ben M. Jaquish

A New View of Roman London

The Highways Laid Down During the Roman Occupation

By Reginald A. Smith

Manǵanese and Silicon in Foundry Practice

Their Uses and Limitations

By A. E. Outerbridge

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    August 26, 1911

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