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Features

Grass Culture

Hedge Cutting Machine

Cleansing Trees with Soap

The Charleston Phosphates

A Cheap Charcoal Stove

The Castor Bean Plant

By Hon. Edward Ballaine

Tests for Butter by Light

The Beginning and End of the Worlds

By Camille Flammarion

The History of Alizarin and Allied Coloring Matters, and Their Production from Coal Tar

By W. H. Perkin

New Compounds of Ammonia with Hydrochloric Acid

Progress of Industrial Chemistry

Brief Review of the Most Important Changes in the Industrial Applications of Chemistry within the Last Few Years

By J. W. Mallet

Note on the Absorption Spectrum of Uranine

Chemical Alteration of Iron

Selenium in Plants

Phosphorescence

Material for Standard Weights and Measures

Strengthening Alcohol

The Supply of Nitrogen

By W. D. Philbrick

Nitrous Oxide as an Anæsthetic Agent

Purification of Mercury

Professor Hughes' Audiometer

A New System of Telegraphy

Electric Lighting in Paris

The Sounds in the Telephone

Physical Society, London

The Standing Stones of Callanish

Stop-Cock of Easy Construction

Ejection of Passengers from Cars

The Gravity Roads of Pennsylvania

New Velocipede

Railway Brick Kiln

Beet Sugar in France and Germany

By John Sparrow

Food, Physiology, and Force

By E. L. Sturtevant

Adulteration of Tea

The Autopsy of an Elephant

By A. J. Howe

The Last Call

The Owl-Critic

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    July 26, 1879

    Confronting Common Wisdom