Volume 81, Issue 17
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Features
The "Denver" Class of Cruisers
Liquid Air Promoting
A Timely Rebuke
Government Advertising in France
The Boers and the Giraffe
American Steel for a Prince's Palace
A Long Photographic Telescope
The Defective Eyesight of School Children
Vitrified Claypipe Instead of Iron for Gas Mains
A Combined Walking and Sulky Plow
A Boiler with a Removable Fire Box
A Compact High Speed Engine
An Improvement in Friction Clutch-Pulleys
The Philadelphia Subway and Tunnel
Preliminary Skirmishing between "Shamrock" and "Columbia"
Boats and Sails
Xiphopages, or Human Doubles
Total Eclipses of the Sun
With Some Reference to The Next Eclipse Visible in The Southern States, May 28, 1900