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Features

The Gardner Machine Gun

John Roach, of New York.—His Ship-Building and his Views

Re-Lighting Safety Lamps by Electricity

Cast Iron Panel by Le Duc

Workpeople's Aid Societies in Alsace

A New Perpetual Motion

Thermic Conductivity of Minerals and Rocks

By J. Thoulet

The New Great Bell for St. Paul's

The Great Organ at the Crystal Palace

Country House, Costing $600 to $800

Gold Wire

Plate Glass Manufacture

Lochmann's Improved Atomizer

The Washing of Clays

A New Mercuro Cyanide Intensifying Process for Gelatino-Bromide Plates

By J. M. Eder

The Last New Developer

By W. T. Wilkinson

On the Intensification of Negatives

Carl Wilhelm Scheele

Manufacture of Lactic Acid

By Charles E. Avery

Some Appliances for Gelatino-Bromide Work

By Herman Fol

Curiosities of Color

By Henry J. Slack

Notes on the Spongillæ of Buffalo

Dangers of Well Water

The Microscope in Disease

The Arrival of Man in Europe

By John Fiske

The “Chemical Lung”

Notes on the Cotton Industry of India

An Indian Mill Manager

Oleomargarine and Lard Cheeses

Peach Culture

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Scientific American Supplements Volume 14, Issue 340supp

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