Volume 86, Issue 7
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Features
Double-Decking the Brooklyn Bridge
The Torpedo-Boat Fiasco
Possibilities of a Steel Panic
Germany's Export Trade in Her Hour of Need
A New Polar Expedition
Science Notes
New Salt of Glucinium
Mail Transportation in Cities
Curious Horn Growth
Portable Coal-Loading Machine
Home-Made Electric Night Lamp
How to Make a Cheap Hydrometer
The New York Assay Office
The Improvement of Washington
By Our Washington Correspondent