Scientific American Volume 38, Issue 18

Features

Departments

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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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

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

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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