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Features

Prehistoric Ruins of Copan

Ice Breakers in Polar Exploration

By Edwin Swift Balch

Science Brevities

The Great Auk

By Georg Krause

Remedies for Snake-Bite: Scientific and Empiric

By A. W. Buckland

The Lengthening Of H. M. S. “Hagen”

Berlin's Elevated Railway

The Palace of the Armies of the Land and Sea at the Paris Exposition of 1900

Combustion in Liquid Air

Trade Notes and Receipts

Selected Formulæ

Trade Suggestions from United States Consuls

Cycle Novelties in England

Factory Heating

The Mclachlan Heavy Oil Motor

Heavy Duplex Lathe

The Weight of Air

How to keep Warm in Cold Weather

A New Direct Current Generator

Patents!

Soap Powder

Departments

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    March 24, 1900

    Think Outside the Gift Box