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Improved Machine Tools

New Mechanical Inventions

What is Life?

How Patents Affect Prices

Congress and the Patent Office Funds

The Decline of the Ironclad

Hydraulic Mining in California

Improved Tool Stocks for Dental Engines

Astronomical Notes - May 4, 1878

By Berlin H. Wright

New York Academy of Sciences

Improved Insect Powder Blower

Lining Roofs with Mineral Wool

Improved Clam Baker

The Boiling Lake of Dominica

The Pyrenean Pine

The Oil Bearing Sands of Pennsylvania

Influence of Cosmical Matter

Improved Pipe Tongs

Improved Receiver and Stench Trap

Proposed Injustice to Inventors - May 4, 1878

Hydrobromic Acid

Communications Received - May 4, 1878

The Scientific American - May 4, 1878


  • Departments

    Business and Personal - May 4, 1878

  • Notes and Queries - May 4, 1878

  • New Books and Publications - May 4, 1878

  • Index - May 4, 1878

  • Patents - May 4, 1878

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