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How to make a Dynamo-Electric Machine, with Working Drawings One-Half Actual Size

By Geo. M. Hopkins

Electro-Dynamic Illustration

The Telephone on a Volcano

Its Use in Detecting Subterranean Sounds

Curious Sensations of Heat

Electrical Clock Dials

Newhaven Harbor, England

Institution of Civil Engineers, London

Eight Horse Power Traction Engine

A Belgian Rag House

Huch's Densimeter

Welding of Powders by Pressure

Improved Zinc Bath for Galvanizing Iron

Variability of the Sun's Surface

Improved Wool Drying Machinery

Progress of Photography in Russia

Chemical Notes

An Improved Saponifier

Experimental Physiology

Demonstrator of Experimental physiology in the University of Pennsylvania

By Robert Meade Smith

Baldness and its Treatment

Microscopical Observations in Yellow Fever

By J. B. Marvin

Preparation of Pepsin, and the Good to be Obtained from It

By Jos. Adolphus

Horticulture in Fairmount Park

By Margaret P. Janes

Agriculture of Japan

Best Sheep for Farmers

The Carpet Beetle, and other Domestic Pests

By H. A. Hagen


Record of Recent Scientific Publications


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