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Improved Street-Sweeping Machine, Snow Skates in California, and more

Another Improvement in Photography the Simpsontype

Professor Silliman on Petroleum in California

Recent American Patents

New System of Regulating Railway Trains

Paris International Exhibition of 1867

Coal

Safety Matches

Naval Discipline

Peat

The Folly of Strikes

Patent Claims

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The Way to Lay Out an Orchard

Rates of Advertising

Notice to Subscribers

To Our Readers

To Inventors, Mechanics, Agriculturalists. The Annual Prospectus, of the Scientific American

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April 29, 1865

Complex Causes. Alternative Solutions.

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