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The American Roller-Skate Rink in Paris

Projected Arctic Explorations

Ice Skating in Summer

Magnetic Action of Rotatory Conductors

By F. Odstreil

On the Minute Measurements of Modern Science

By Alfred M. Mayer

The Metric System


Monster Barometer

The Sensation of Sound

The Souter Point Electric Light

The Little Basses Lighthouse

The Carpet Manufactures of Philadelphia

New Turret, Musical and Chiming Clock

Direct Positives for Enlarging

How the Center Selvage is Formed

Architectural Science Classes

Elementary Replies

Sympathetic Vibration

Glass of the Ancients

Brattice Cloths

Water Gas and its Advantages

California Pisciculture

Preservation of Meat

Eight-Horse Power Portable Engine

Independent Car Wheels

New Bridges at or Near New York

The Sutro Tunnel

Clyde Shipbuilding and Marine Engineering 1876

Passenger Travel, New York City

New Bromine-Still

By W. Arvine

Savelle's System of Distillation

The Phoenix Steam Brewery, New York

French Cognac Distillation

Schwartz's Sugar Refinery, London

Vienna Bread and Coffee

Lessons in Mechanical Drawing

By C. W. MacCord

Geological and other Notes

A Geological Congress

Chloral Hydrate in Scalds and Burns

By S. S. Riddell


Therapeutic Uses of the Cyanide of Zinc

Typhoid Fever.—Treatment

From a Lecture on Fevers

By Alfred L. Loomis

Dr. Brown-Sequard on Nerve Disease

Hydrophobia Cured by Oxygen

Pictorial Crystals

Photography of Musical Tones


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