Volume 28, Issue 7
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Features
Paddle Shafts for Pacific Mail Steamers
The Metropolitan Museum of Art
Are the Planets Inhabited?
The New York State Reward for Improvements in Canal Navigation
Burning Water as Fuel
Army and Navy Patents
The Employment of Women
Arsenic Colors
The Boston Fire Commissioners' Report
Free Mail Privileges Ended
The System of Snow Protection on the Union Pacific Railroad
Mixing Cylinder for Concrete
The Pantagraph
The Chemical Discoveries by the Spectroscope
The Lost Arts
Lynn's Anti-Freezing Railroad Tank Valve and Feeder
Steam Filter and Condenser
Pneumatic Gun Carriage and Elevator
Patent Office Decisions
Recent American and Foreign Patents
Decisions of the Courts
United States Circuit Court—Southern District of New York.