Volume 49, Issue 1256supp
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Features
Towing Canal-Boats by Electricity
Color Impressions
Mechanical Traction on Canals
Trade Risks to Eyesight
The New Smokeless Powder Guns of the United States Navy
The Homemade Windmills of Nebraska
Competition for the Best Life-Saving Device in Cases of Disaster at Sea
Anthony Pollok Memorial Prize