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Features

Rack Railways

Punching and Shearing

By Payson Burleigh

Gas Motor Tram Cars

Repolishing Japanned Work

Cleaning Cavities in Metal Work

Cycle Mechanics

By H. K. Landis

A New Steam Trap

Hints on Baking Enamel

Special Shearing Machine

The Presence of Sodium in Aluminum

The Action of Electric Currents on Mine Surveying Instruments

Electric Furnaces and the Conversion of Carbon into Graphite

Sticky Fly Paper

Telescopic Photography for Amateurs

By John Mills

The Invisible Food of Fish

Electrical Notes

Miscellaneous Notes

Engineering Notes

$250 Prize Essay Competition—The Progress of Invention during the past Fifty Years

Fifth Prize, won by “VERBUM SAP. III.” (FREDERIC DE GARIS).

Selected Formulæ

The Shade Tree Insect Problem in the Eastern United States

THE FALL WEBWORM. (Hyphantria cunea Drury; Figs. 9 to 11.)

The Development of Newfoundland

Italian Thunderstorms

Patents!

Departments

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    August 22, 1896

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