Volume 44, Issue 1135supp
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Features
Perpetual Motion.—IV
The World's Gold Production
On a Slow Combustion Arc Lamp suitable for Factories and Street Lighting
The use of Telephones by Royalty
High Speed Electric Multiple Pump
An Electric Band Saw
The Testing of India Rubber Goods
Automatic Gas Tap
Engineering Notes
Miscellaneous Notes
Electrical Notes
The New Cathedral in Berlin, Germany
Improvident Civilization
A Plea for the Application of Scientific Methods to the Amelioration of Socio Economic Defects and Disorders