SA Supplements Vol 83 Issue 2157supp

SA Supplements

Volume 83, Issue 2157supp

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Features

Human Biology and War

Man and Animals Conform to Different Laws

Saving Potatoes by Dynamite

Archæology of Mammoth Cave and Vicinity: A Preliminary Report

N. C. Nelson

Some Effects of the Action of Ultra-Violet Light on Cotton

Surgery for Injured Trees

How Far To Go in Cavity Filling

J. J. Levison

Analysis of some Sizes and Finishes

Eccentricities of Ocean Drift

Removing the Taste Due to Algæ in Drinking Water

Search for Typhoid and Paratyphoid Baccilli in Fæces and Water

Where Italy is Fighting

Initiation of Explosions

The Various Agencies and Methods Employed for Igniting Powders

Walter Arthur

The Recovery of Benzole

Reversing Propellers for Diesel Engines

Sand Devastation

How the Dunes Advance and how Their Movement is Checked

Percy Collins

Chemical Composition versus Electrical Conductivity

Collin G. Fink

Emulsions and Suspensions with Molten Metals

Astronomical Drawings

Practical Suggestions for Recording Observations

William Porthouse

A One-Quarter Horse-Power Single-Phase Induction Motor—II

Complete Details and Instructions for Building

Charles F. Fraasa

A Theory of the Constitution and Mode of Action of Tannin Colloids

The Lost Art of Close-Plating

Precision in Chemical Weighing—I

Notes on the Apparatus to be Employed and Methods of Using It

William Norman Rae, Joseph Reilly

Voice Recovery after Shell Shock

Conversion of Fruits and Vegetables into Dried Products