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SA Supplements Vol 12 Issue 309supp

SA Supplements

Volume 12, Issue 309supp

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Features

Thomas Alva Edison

The International Exhibition of Electricity

Th. Du Moncel

The Megy Dynamometric Counter

Smith's Dynamometer

The Early Days of Electric Telegraphy and of Ocean Cables

Joining Wires

How to Construct a Barometer

A. F. Miller

Compressed Air Engines

Jas. Young

Siemens' New Gas Generator

On the Application of Solid Steel to Small-Arms, Projectiles, and Ordnance Manufacture

M. F. Gautier

Practical Notes on Plumbing

P. J. Davies

How Silk is Spun from the Cocoon

Shipbuilding a Thousand Years Ago

Man and Woman—An Anthropological Comparison of the two Sexes

G. Delaunay

Hot Ice