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Features

Another Remarkable Torpedo Boat—Over Twenty-Eight Miles an Hour

Copeman & Pinhey's Life Rafts

Reservoir Dams

By David Gravell

New Dredging Machinery

The Flexible Girder Tramway

Bozerian's Refrigerant Punkas

Apparatus for Drying Flour

How to make a Kite without a Tail

Apparatus for Manufacturing Bouquets

Radii of Curvature Geometrically Determined

No. VII.—Path of a Point on a Connecting Rod

By C. W. MacCord

Automatic Commutator for Incandescent Lamps

Improved Microscopical Settling Tube

By F. Vanderpoel

Definitions and Designations in Electrotechnics

Climate in its Relation to Health

By G. V. Poore

Sunlight Colors

By W. De W. Abney

The Wave Theory of Sound Considered

By Henry A. Mott

The Relation of Tabasheer to Mineral Substances

Building Plans and Specifications

The Edible Earth of Java

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May 28, 1887

Think Outside the Gift Box