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Wood Turning at High Speed

Improved Bolt Cutter

Miscellaneous Summary

The Manufacture of Beet Sugar

Phenic Acid

Storer's Open-Top Suet Lubricator

Should There be a Patent Law ?

The Way Felt Hats Are Made

Workingmen's Associations

Novel Mode of Treating Coffee

Mershon's Watch Key

The Non-Recoil Gun--A New Principle in Explosives

The Scientific Americana New Volume

What the South Needs

Patent Claims

Patent Office



  • Departments


  • New Inventions

  • Notes and Queries

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June 23, 1866

Of Shamrocks and Science

Happy St. Patrick’s Day