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The Rock-removing Machinery of the Suez Canal, Largest Embankment in Germany and more

By Jacques Boyer

Soil Analysis and Seed Selection

A New Problem in Agriculture

By L. V. Redman

Increasing the Food Supply of a Nation

How Intensive Farming is Practiced in Germany

By Homer C. Price

Economies of the Farm Tractor

The New Way of Tilling the Soil and What it Means

By Philip S. Rose

X-ray Pictures of Micro-organisms

By Alfred Gradenwitz

The Fourth Award of the Scientific American Medal

An Oxygen Fed and Driven Device for Artificial Respiration

Gasoline and Oil Power on the Farm

How Engines Have Lightened Farm Work

By Philip S. Rose

Success of the County Agriculturist Plan, The Green Tarnish on Lead Pipes

By Charles M. Carroll

Coming Army Aeroplanes, Agriculture at Columbia University and more

By C. H. Claudy

Clarifying Beer by Gelatinous Silica, The Mississippi as a Conveyer of Material


  • Letters

    Correspondence - February 1, 1913

  • Recommended

    New Books, Etc. - February 1, 1913

  • Departments

    The Heavens in February 1913

  • Recently Patented Inventions - February 1, 1913

  • Notes and Queries - February 1, 1913

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