SA Supplements Vol 84 Issue 2190supp

SA Supplements

Volume 84, Issue 2190supp

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Features

The Human Potential in Industry

National Efficiency, Now Expressed in New Terms

Otto P. Geier

Free Gas Mantles in England

Fustic

An Important Dye Wood

C. D. Mell

Chemical Differentiation of the Central Nervous System in Invertebrates

A. R. Moore

Marine Engineering from 1911 to 1917

The Mystery of the Transparent Rat

Safety in Industry

First Aid and Accident Prevention in a Great Manufacturing Plant

Prof. Malladra's Recent Researches at Vesuvius

Drum-Fire

Between the Tigris and the Indus

A Region of Great Future Commercial Importance

Thomas H. Holdich

Destruction of Field Mice

Determination of the Density of Solids

The Efficiency of the Employe

Building a Moving-Picture Camera

A Serviceable Home-Made Machine for $6.50

E. H. Williamson

Under-Sea Instinct of the Sea Lion

Change of Conductivity of Minerals by Illumination

Practical Wartime Shell Making

Color and Color Photography

A Review of Problems Involved, and Methods of Working

C. D. Hodgman

Action of Lead as a Stimulant for Plants

Stepped Ignition of Gases

Shells and Hand Grenades of Cast Iron

Altitude of Bird Flight