SA Supplements Vol 61 Issue 1566supp

SA Supplements

Volume 61, Issue 1566supp

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Features

Science Notes - January 6, 1906

Truffle Culture in France

Jacques Boyer

Some Newly Discovered Properties of Crystals

The Undulatory Theory

The Manufacture of Rosin Oils

E. Rabat*amp*eacute;

Watertone Sepia Printing Paper

James Thomson

An Electric Chime

George M. Hopkins

How many Gnats or Mosquitoes are there in a Given Area?

Ronald Ross

Curves in Pattern-Work

Fertilizers and Electric Processes

An Electro-Thermostat

Edward F. Chandler

Contemporary Electrical Science

Diamond Importations

The Telemobiloscope

Electrical Notes

Engineering Notes

Trade Notes and Formulæ