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The Burning of the Theatre Francais

The Facilities afforded by the Office of Standard Weights and Measures for the Verification of Electrical Standards and Electrical Measuring Apparatus

The Future Wheat Problem

Walking as a Tonic and Pastime

600 Horse Power Blast-Furnace Gas Motor and Blowing Engine

Downie's Patent Piston Rings

Apparatus for Lifting Rails

Machine for Operating a Pile Driver by means of the Current of a River

Machinery Labor-Saving, Labor- Creating or Labor-Killing?

The Poison in our Food

A Simple Illumination Photometer

Art and Fashion among the Pahouins

Forest Conditions in the Klondike

Trade Suggestions from United States Consuls

Brinton Memorial Chair in the University of Pennsylvania

Miscellaneous Notes

Trade Notes and Receipts

The Meerschaum Pipe Centenary

Chemical Manures Applied to Fruit Trees

New Fireproof Material in Germany

Photographic Novelties

The Relation between the Periodic changes of Solar Activity and the Earth's Motion

The Vedovelli and Priestley Cab

The German Antarctic Expedition

New Books

Patents!

Roadside Fruit Trees

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    April 14, 1900

    Complex Causes. Alternative Solutions.

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