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Universal Wood Working Machine

The Grinding and Polishing of Plate Glass by Machinery

Andersons Oil Safe

The "Farmer" Fountain

The Prussian Needle Gun and the French Chas-Sepot Needle Gun

Hydraulic Machinery

The New Patent Laws--Important Changes Affecting American and Foreign Manufacturers--Free Trade in Patents Now Fully Established

Coating Vessels with Zinc

The Manufacture of Illuminating Gas

Depreciation of American Vitality

How Mercurial Thermometers are made

Scientific Intelligence- August 6, 1870

Is the Knowledge of English Grammar Necessary to the Writing of Good English?

How our Wheat Crops are Handled

Recent Americans and Foreign Patents- August 6, 1870

Answers to Correspondents- August 6, 1870

Official List of Patents- August 6, 1870


  • Letters

    Correspondence- August 6, 1870

  • Departments

    Business and Personal- August 6, 1870

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