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Features

The Hydromotor

Mr. Le Van on the Gaffney Boiler Explosion

Our Progress in Mechanical Engineering

By Robert H. Thurston

Steam Wagons

The Kidder Printing Press

The Telelogue

Capt. Gaumet's New Apparatus For Optical Telegraphy

Improved Expansible Pulley

New Astatic Galvanometer

By Marcel Deprez

Eastgate House, Rochester

The Electric Discharge through Colza Oil

By A. Macfarlane

The New Buildings for the Medical Department of the University of Halle A. S., Germany

Flexibility of Marble

Opium Smoking in America

Soap and its Manufacture from a Consumer's Point of View

The Fuegians at the Jardin D'Acclimatation, Paris

Ozone the Cause of Phosphorescence

Paraffin to Preserve Eggs

The Essential Oil of Ginger

By John C. Thresh

A Natural Wood Preservative

The Philosophy of Insanity

By John Sanderson Christison

The Disposal of House Drainage

By E. S. Philbrick

Borate of Quinoidine

Plows and Plowing

What is Good Plowing?

Coffee

Insecticides

By H. Behr

Durability of Redwood

Profits of Fruits and Vegetables Grown in Florida

Floors for Horse Stables

Mildews and Moulds

By A. G. Field

St. Helena as a Call Port

Departments

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November 26, 1881

Complex Causes. Alternative Solutions.