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Features

Ocean Waves

By William Allingham

Cast Iron Howitzer

The Utilization of the Power of Ocean Waves

Transfer Cable for Railroad Cars

Composite Heliochromy

By F. E. Ives

Life-Saving Devices

Nievsky's Ferrotype Dry Plate Camera

Photographing Flowers

Wave Propagation of Magnetism

By John Trowbridge

A Pocket Changing Bag

The Theatrophone

The Dissolving Coin

The Rapid Testing of Agricultural Phosphates

Purification of Water by Freezing

By Wm. P. Mason.

Phosphorous Oxide

By A. E. Tutton

Peculiar Perforation of Zinc Rods

By Charles E. Munroe

A New Acid

The Roche Dairy

Practical Forestry

By John D. Lyman

Shooting Stars

The Wends

Sandalwood

On Peroxide of Hydrogen: A Physical Medical Research

By Benjamin Ward Richardson

Useful Engineering Books

Patents!

Departments

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