Skip to main content


Rack Railways

Punching and Shearing

By Payson Burleigh

Repolishing Japanned Work

Gas Motor Tram Cars

Cleaning Cavities in Metal Work

Cycle Mechanics

By H. K. Landis

Hints on Baking Enamel

A New Steam Trap

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

The Invisible Food of Fish

Telescopic Photography for Amateurs

By John Mills

Miscellaneous Notes

Electrical Notes

Engineering Notes

Selected Formulæ

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

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

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



    Purchase To Read More

    Already purchased this issue? Sign In to Access
    Select Format
    Scroll To Top