Volume 55, Issue 1424supp
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Features
Motors in Agriculture
By the London Correspondent of the Scientific American
A Proposed System of Electrically Towing Canal Boats
Contemporary Electrical Science
Refining Gold by Electrolysis
Electric Generator for Lighting Residence
Notes on the Contact Process of Making Sulphuric Acid
The Orient Pacific Liner “Orontes”
How to make Soap Powder
History of Finger Rings
Is the Effect of Radio-Active Substances an Absorption of Gravitational Energy?
On Polonium
Latest and Best Value of the Mechanical Equivalent of Heat
Carl Hering