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Features

The Pulsometer

The "Granges" and their Object

The Study of Mathematics

The Flowing Oil Wells of Pennsylvania--Great Decline in the Price of Oil

Engines of Admiral Porter's Torpedo Boat

The Sun's Distance and How it is Measured

Scientific and Practical Information - August 30, 1873

Concrete Siphons on the Canal Quintino Sella, Lomellina, Italy

Reversing Gear for Rolling Mills

The Devil Fish

Nature and Art

The Great Exposition--Letter from United States Commissioner Professor R. H. Thurston

Brick Compressing Machine

The Diamond Cotton Chopper and Cultivator

French Four Axled Articulated Locomotive

Recent American and Foreign Patents - August 30, 1873

Answers to Correspondents - August 30, 1873

Communications Received - August 30, 1873

Departments

  • Letters

    Correspondence - August 30, 1873

  • Departments

    Notes and Queries - August 30, 1873

  • Business and Personal - August 30, 1873

  • Index of Inventions - August 30, 1873

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August 30, 1873

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