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Engines and Boilers of the “Deutschland”

Bronze Printing

Some useful Photographic Formulæ

Glass Bead Manufacture at Venice

Coolgardie, Australia, Water Pipe Line

Width of a Lightning Flash

Unusual Electrical Mishaps

Moving a Bridge

Regulations concerning the Prize offered by the Aero Club

Numbering Hammer

By Robert Grimshaw

The Cutting of Diamonds at Amsterdam and the War of the Transvaal

Railroads in Asia

Railroad Construction in Asia Minor

Philippine Weights and Measures

Trade Suggestions from United States Consuls

The Products of the Incineration of Tobacco, as in Smoking a Cigar

A Pneumatic Shutter for Optical Exposures

Trade Notes and Receipts

Selected Formulæ

A Japanese Imperial Palace

Some Details of Army Practice in Germany

Artificial Colors in Milk

Medicated Waters

Energy of Becquerel Rays

Excavations in the Roman Forum

Constitution of Sulphites


Sociable Spiders

The Abnormal Olive Trees of Majorca

Some Inexpensive Home-Made Laboratory Apparatus

By F. N. Strickland

Where the Day Changes

By A. M. W. Downing

The Japanese Battleship “Asahi”

Advertising American Exhibits at Paris

Mexican Cattle Industry


Precious Stone Industry in the United States


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May 26, 1900

20% Sitewide for President's Day