Features
Railway Telegraphs
Recent Foreign Inventions
Adjusting the Number and Depth of Paddle-Wheel Blades
Pennsylvania Soapstone
Foolscap Paper
Improvements in Railroads
Foot Prints of Reptiles in the Coal Strata of Pennsylvania
To City Subscribers
Iron Rigging for Ships
Gun Cotton and Gunpowder
Spontaneous Combustion
The Hillotype Again
Awards to American Exhibitors at the French Exhibition
Reports of Railroads
Who'll Take the Prizes?
Hints on the Value of Patents
Woodworth Patent Remonstrances
Protection of Designs for Articles of Manufacture
The Manufacture of Coke.--Railroad Fuel
Australian Expedition
A Great Traveler
Gratitude to Improvers of the Iron Manufactures
British Association for the Advancement of Science.--No. 3
Important Items
Chemical Technology
Mechanics
Another New Metal
Iodo-Nitrate of Silver
Japan Cotton
Departments
- Letters
To Correspondents
