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Why is it a Pound? Rear-Admiral William S. Sims and more

Mountain-Peak Grazing

How the Western Sheep-Growers Are Spreading Out Their Field of Operations Toward the Sky

By W. F. Wilcox

Electricity and the Census

A Glance at the Machines That Make 0ur Decennial Inventory a Matter of Weeks Instead of Years

By J. A. Stewart

Anti-Corrosion Engineering

A Practical Method for Preventing the Destruction of Steam and Hot-Water Pipes

By Wm. H. Walker

The New York State Barge Canal--IV

The Present Traffic and Future Prospects of the New Waterway

By Edward S. Walsh

A Vegetable Manufacturer of Decorated Glass

Some Remarkable Facts About the Diatoms Found in the So-called Infusorial Earth

By Wilam M. Butterfield

The Naturalist's Corner

Wild Life Conservation All Over the World

By Wilamu T. Hornaday

Electrolytic Destruction of Steel Due to Leakage from Electric Railroads, Meters for Measuring Steam and more


  • Departments

    Correspondence - January 31, 1920

  • The Heavens in February, 1920

  • Inventions New and Interesting - January 31, 1920

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