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Motors in Agriculture

By the London Correspondent of the Scientific American

A Proposed System of Electrically Towing Canal Boats

The Automatons of Jaquet-Droz, Father and Son

Contemporary Electrical Science

Refining Gold by Electrolysis

Electric Generator for Lighting Residence

How to make Soap Powder

Notes on the Contact Process of Making Sulphuric Acid

The Orient Pacific Liner “Orontes”

History of Finger Rings

By Cyril Davenport

Is the Effect of Radio-Active Substances an Absorption of Gravitational Energy?

On Polonium

By F. Giesel

Latest and Best Value of the Mechanical Equivalent of Heat

Carl Hering

The Evolution of the Pianoforte

By Randolph I. Geare

Man's Place in the Universe

By E. Walter Maunder

The Meteor of the Soudan

Kites as Meteorological Instruments

The Clay-Working Industries of Greece

Results of a Naval Inquiry as to which is the Most Powerful Armorclad Afloat

The “All Stations Express”

Trade Notes and Recipes

The Berber Tribes of North Africa

Libbey's Travels in Ancient Syria

Trade Suggestions from United States Consuls

Selected Formulæ



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