SA Supplements

July 1892

Volume 34, Issue 861supp

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Features

Ocean Waves

William Allingham

Cast Iron Howitzer

The Utilization of the Power of Ocean Waves

Transfer Cable for Railroad Cars

Composite Heliochromy

F. E. Ives

Life-Saving Devices

A Pocket Changing Bag

Wave Propagation of Magnetism

John Trowbridge

Nievsky's Ferrotype Dry Plate Camera

Photographing Flowers

The Theatrophone

Purification of Water by Freezing

Wm. P. Mason.

The Rapid Testing of Agricultural Phosphates

The Dissolving Coin

Phosphorous Oxide

A. E. Tutton

Peculiar Perforation of Zinc Rods

Charles E. Munroe

A New Acid

The Roche Dairy

Practical Forestry

John D. Lyman

The Wends

Sandalwood

Shooting Stars

On Peroxide of Hydrogen: A Physical Medical Research

Benjamin Ward Richardson