SA Supplements Vol 83 Issue 2142supp

SA Supplements

Volume 83, Issue 2142supp

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Features

Vibrations, Waves and Resonance—I

The General Principles Underlying Wave Motions

J. Erskine-Murray

Copper Deposits in the Arctic Regions

Poisoned Arrows

The Venoms Used in Their Manufacture, and Their Action

Peat Industry in Italy

A New Method of Measuring Refractive Index and Dispersion of Glass in Lenticular and Other Forms

An Apparent Correspondence between the Chemistry of Ingeous Magmas and of Organic Metabolism

Henry S. Washington

Problems of Human Nutrition

Discrepancies in Current Systems of Dietetics

Axel Emil Gibson

Train Ferries

Homogeneity of Visible Radiations

Small Heaters for use in the Trenches

Canada

A Summary of Its History and Economic Possibilities

Further Evidence as to the Relation between Crown Gall and Cancer

Erwin F. Smith

Spark Ignition

The Effect of Spark Intensity on Ignition in Internal Combustion Engines

J.D. Morgan

A Rotary Interrupter for Large Induction Coils

Complete Technical Description, with Instructions for Building

Louis B. Laruncet

The Clocks at the Greenwich Observatory

Refractory Materials—II

Their Characteristics,Applications and Methods of Examination