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Features

Upon the Production of Sound by Radiant Energy

By Alexander Graham Bell

The Gower-Bell Telephone

Molecular Electro-Magnetic Induction

Gray's Harmonic Telegraph System

Magneto-Electro Induction

By F. Guthrie and C. V. Boys

The Denver and Rio Grande Railway

The Beef Juice Furor

Prof. Gamgee's New Motor—The Ammonia Engine

The Gamgee Zeromotor

Celerity of the New York Fire Department

Scarlet for Felts

Rice as a Brewing Material

Machines for Repairing Locomotives

Stray Notes on Gelatine Plates

By E. Brightman

Handkerchief Extracts

By Robert H. Cowdrey

On the Removal of Aqueous Vapor from the Atmosphere

By J. J. Coleman

Action of Bacteria on Gases

The Chemistry of a Lump of Clay

A New Continuous Ammonia Process

The Lime-Light

By T. Frederick Hardwich

A Simple Rapid Filtering Apparatus

Organic Carbon and Nitrogen in Water

Prevention of Diphtheria

By Edwin R. Maxson

Spectrum Analysis as Applied to the Solar System

By Dr. Wm. Huggins, Esq., D. C. L., LL. D . , F. R. S.

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    May 21, 1881

    Think Outside the Gift Box