SA Supplements

September 1890

Volume 30, Issue 766supp

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Features

The Belleville Cable Railway

The Sault Ste. Marie Canal

Fabrication of Twelve-Inch Mortars

A. A. Fuller, F. N. Connet

Paris Central Pneumatic Power Stations

The Amiral Baudin

Every-Day Work in the Rubber Factory

Nick R. Augur

The Electrolysis of Metallic Phosphates in Acid Solution

Edgar R. Smith

Connecting Lightning Conductors to Gas and Water Pipes

Magic Photographs—The Mysterious Photograph

Electrolysis of Different Substances

P.L. Aslanoglou

Color and Coloring

A. H. church

Medicinal Soaps

Improved Ophthalmic Refractometer

Seborrhcea and Baldness

The Role of the Microbe

A. R. Smart

An Improved Wave Apparatus

John T. Stoddard

The Gramophone

New Method of Extracting Cube Root

H. A. Wood

Tanning Analysis

Muter

Competition between the Leblanc and the Solway Soda Processes

Music—Transposition

The Chlorine Industry

Useful Engineering Books

The Sulphuring of Dried Fruit

Hilgard