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Features

American Resources and Progress

Self-Regulating Filter

Combs, Gills, and Hackles

Soldering Apparatus

American Engineering—I

Smelting without Fuel

Drying Box for Photo Gelatine Plates

Comparative Strength of Wood and Iron

Progress of Marine Steam Engineering

Preparing Metal Sheets and Wire for Coating

Manganese Bronze

Glycerine in Rubber

German Scientific Credulity

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

By W. H. Perkin

Alizarine Blue

To Test the Dye of Colored Fabrics

Ready Method for Preparing Diphenyl

By Watson Smith

Notes on Uranine

Manufacture of Ammonia Salts from Gas Liquor

A Speculation on Protoplasm

By Persifor Frazer

On the Softening of Magnesia-Hard Water

By J. Grossmann

The Intravenous Injection of Ammonia

By Gaspar Griswold

Remarkable Fire Caused by Lightning

A California Telephone Concert

Recent Explorations in Africa

Historical Sun-Darkenings

Karl Koch

The Wild White Cattle of Great Britain

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    August 02, 1879

    Think Outside the Gift Box