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SA Supplements Vol 30 Issue 778supp

SA Supplements

Volume 30, Issue 778supp

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Features

Captive Balloons of the French Navy

Physics at the British Association

William H. Cilley

Economy of Steam Heating of Passenger Cars

Electrolytic Production of Pure Iron

A Proposed Railroad Approach to New York City

Electro-Welded Projectiles

The Electromagnet

Silvanus P. Thompson

Manufacturing Smoke

Geo. E. Davis

Lubricating Oils

A. C. J. Charlier

Artificial Incubation in Egypt

Cardwell

On Sulphites, their Stability and Preservation

Joseph C. Belcher

A Method of Detecting Chemical Union of Metals

G. Gore

Liquid Chlorine

A. E. Tutton

New School of Medicine of Paris

Constipation: Its Nature and Treatment

C. L. Dodge

The Quadri-Centenary of America's Discovery

Our Currants

Building Plans and Specifications

Ormonde and Salvator

Useful Engineering Books

Departments

Patents- November 29, 1980