SA Supplements

April 1886

Volume 21, Issue 538supp

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Features

Horizontal Engine with Proell Valve Gear

Metallic Defenses of the Steel Works of the United States

Test Recording Apparatus

Description of An Autographic Test Recording Apparatus

J. Hartley Wicksteed

Solid Emery Wheels

T. Dunkin Paret

Charneau's Heat Recuperator

The Russian Silk Loom

Machine for Covering Cords

The Manufacture of Fire-Brick at Mount Savage, Maryland

Robert Anderson Cook

A Cheap Printing Press

Segon's Apparatus for Raising Water

Hilder and Scott's Metal Sorting Machine

Radii of Curvature Geometrically Determined

C. W. Maccord

Explanation of the Maxwell Electromagnetic Theory of Light

The Photometer

Polarized Light

George M. Hopkins

Application of Electricity to the Study of Spontaneous Motion in Capillary Tubes

Fusion by Electricity

A. M. Tanner

The Origin of the Red Glows

Sereno E. Bishop

Fungi Inducing Decay in Timber

P. H. Dudley