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Features

Combined Regulator and Alarm

Iron as a Material of Construction

The Manufacture of Olive Oil in California

The Pneumatic Despatch

Improvement in Harness Breast Straps

The Sand Blast Process for Cutting Hard Substances, Engraving on Glass, Etc.

The Cuban Sugar Manufacture—Modern Machinery

Portable Medical Batteries

By George W. Rains

Coffee Hulling and Polishing Machine

Improved Steam Boiler

Another Great Engineering Work

The Government Examination of Breech Loading Arms

The Causes of Extraordinary Conditions of Weather

Fast Canal Steaming

Binary Vapor Engines

Chemical Means of Preventing Scale in Boilers

Who Is Dr. Vander Weyde?

The Marriage of Father Hyacinthe

The American Association for the Advancement of Science

Patent Office Items

Letter from Professor R. H. Thurston - September 28, 1872

Recent American and Foreign Patents - September 28, 1872

Foreign Patents—A Hint to Patentees

New Patent Law in Canada - September 28, 1872

Practical Hints to Inventors - September 28, 1872

Departments

  • From the Editor

    Answers to Correspondents - September 28, 1872

  • Letters

    Correspondence - September 28, 1872

  • Recommended

    New Books and Publications - September 28, 1872

  • Departments

    Notes and Queries - September 28, 1872

  • Business and Personal - September 28, 1872

  • Index of Inventions - September 28, 1872

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September 28, 1872

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