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Sketches from the Exhibition

The Napmeter

Horticultural Exhibit at the Centennial

The Chemical industry of Germany at the Centennial

By The Committee of the Associated German Chemical Manufacturers

The International Exhibition of 1876

The Largest Engine in the Exhibition.—The J. P. Morris Blowing Engine

Camphor at the Exhibition

Gold and Silver

Resources of Servia and Bosnia

Economy of Fuel in Engines

Rules for Calculating the Power of Belting

The City of Brussels

The Manufacture of Brussels Carpets

An Ancient Roman Villa

The “Thunderer Explosion”

The 1OO-Ton Gun.—The heaviest cannon in the World

Intensification of Negatives

The Possibility of Photographing Sounds

Ozone from Manganese

The New Philadelphia Route

The Yardleyville Bridge

Periodic Movements of the Foliage of Plants

A Novel Vinegar Manufacturer

Steam-Blower for Smithy Forges

New Feed-Water Heater

Novel Boiling Fountain

Why Early Autumn is an Unhealthy Season

New Method of Heating Gas from Motive Power

By W. N. Hill

Self-Recording Dial

Quick Work.—Wheat Harvested, Thrashed, Ground, made into Bread, and Eaten, all in Eleven Minutes

Porcelain Roller Mills

Tanning of Textile Fabrics

Prevention of Mill Fires

Roller Flour Mills

By Oscar Oexle

How to Build Cheap Boats

By Paddlefast

Lessons in Mechanical Drawing

By C. W. MacCord

Printing with artificial Alizarine

By J. Depierre

Extraction of Gallium from its Ores

By M. Lecoq De Boisbaudran

Notes on Blowpipe Analysis

By H. B. Cornwall

Waterproofing Paper

Deodorizing Petroleum


By Carl Rumpff

New Process for Preparing Pure Nickel Salts

Process for Finishing Bronze and Brass Articles

Artificial India-Rubber

Cement Casks

New Process for the Manufacture of Dextrin

By M. Anthon


Asbestos in Nevada

Chrome Red

Fattening Oysters

Night Habits of Fish

Persian Red

Transparence of Flames

By MM. Jamin, Puiseux and E. Becquerel

Absorption of Free Nitrogen

By M. Berthelot

Atomic Constitution of Bodies

By M. De St. Venant

Cormorant Fishing in England

Metallization of organic Bodies for Galvanic Deposits

By M. P. Cazeneuve

Air-Bags for Raising Ships

Black Aniline Ink


By MM. Ste.-Claire Deville and H. Debray


Extracting Mercury and other Volatile Metals from their Ores

By H. Berrens

Improved Metallic Alloy

By A. Le Marquand

Celestial Dynamics

Do the Planets Move Round the Sun

The Celestial Indicator


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