SA Supplements Vol 52 Issue 1348supp

SA Supplements

Volume 52, Issue 1348supp

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Features

The Boston Elevated Railway

J. A. Stewart

The Protection of Fire and Police Telegraph Systems from High-Tension Currents and Lightning

Walter M. Petty

Contemporary Electrical Science

Four-Motor Equipments

When to use a Color Screen

Why does Modern Leather Rot?

The Bursting of Fowling Pieces

Selenium

Ether Wave Lengths

Solubility of Shellac in Alkaline Solutions

Barium Preparations

Liverpool's Threatened Rival

James Boyle

Electrometallurgy of Lead

Respiration of the Olive

The Measurement of Sediment

Lamont's Feed Pumps

The Caisson at the Kiel Drydock

The British Association at Glasgow

Intercrossing and Interbreeding as Causes of Variation

Roman Oculist Seals

Care Bestowed by Fishes upon their Young

Recent Discoveries in Armenia

The Mechanism of a Sunset

Arthur H. Bell

The Date Palms of Biskra

Development of the Sense of Smell

The Thunderstorm: A New Explanation of One of its Phenomena

Byron McFarland

Potassium from Feldspar

Petrified Oak in Russia

Trade Suggestions from United States Consuls

Patents!

Trade Notes and Receipts