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Features

The Dewey Arch

The Manufacture of Dongola

Acetylene for Lantern and Enlarging

The Works of the Diamond Match Company, Limited

Speed-Changing Gears for Motocycles and Phaetons

Trade Suggestions from United States Consuls

Miscellaneous Notes

Selected Formulæ

Trade Notes and Receipts

Scenes in Tokio

Peat in Ontario

The Wreck of Krakatoa

Commercial Africa

Hurricane in Guadeloupe

The Mississippi Snapping-Turtle

Robert Wilhelm Bunsen

Quebracho Tannage

By W. Eitner

An Advance in Measuring and Photographing Sounds

By Benjamin F. Sharpe

Boats and Sails.—I

Tools for Testing Boat Models

By Walter Burnham

The Modern Warship as Combining in itself the Highest Results of Skill, Ingenuity and Scientific Knowledge

The Charging and Care of Automobile Batteries

By Theodore D. Bunce

Patents!

Departments

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    October 14, 1899