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The Brooklyn Pier of the East River Bridge

The End of Another Year

Proposed Change in the Patent Law

Tidal Water Power; A New and Useful Suggestion

The Planet Jupiter as Revealed by the Modern Spectroscope, Photometer, and Telescope

Retirement of Judge Nelson

Progress of the Hoosic Tunnel

American Inventions in Europe

The Fire at the Fifth Avenue Hotel

The Centennial of 1876

Science Record for 1873

The Application of Chemical Fertilizers to Horticulture

Mallet's Method for Oxygen


Scientific and Practical Information

Putt's Wash Boiler

Improved Safe Protector

Amateur's Jig Saw

Improved Railroad Spike

Government Telegraphy

Dayton's Gas Carburetter

Answers to Corespondents

Patent Office Decisions

Decisions of the Courts

Communications Received

Recent American and Foreign Patents

Value of Patents and How to Obtain Them

Practical Hints to Inventors


  • Departments


  • Business and Personal

  • Index of Inventions

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December 28, 1872