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Features

The Road to Empire--I

Ancient Minturnae, an Early Roman Town, Stood in the Way of Rome's Great "Lincoln Highway." Excavations Reveal the Type of Roman Life

By Jotham Johnson

That Mantis Appetite

Gluttonous Praying Mantis, Ugly, Harmless to Humans, Beneficial, Devours other Insects

By Paul Griswold Howes

A Mountainous Earthen Dam

Fort Peck Dam, Aid to Navigation on "Big Muddy", 100,000,000 Cubic Yards of Earth in the Dam, Unique Engineering Problems

By R. G. Skerrett

If You Smoke

Was Father Right?, Why We Smoke, Cigarettes Least Harmful, The Newer Moistening Agent, Acidity, What Answer Gives Science?

By Albert G. Ingalls

Some Remarkable Double Stars

By Henry Norris Russell

Why Faded Fabrics?

Dye Fallacies, Few Cents Determine Fast or Fugitive Dye, Dyeing Economics, America Makes Fast Dyes, Public Must Demand Them

By John H. Sachs

Farm to Factory

Chemistry Points the Way, Soy Beans, Tung Oil, Starch, Wood Pulp, Cotton, Rayon

By L. F. Livingston

The Twelve Inch Club

Training Pilots to Fly the Beam

Accurate Instruments Are Essential, Timed Turns, Under the Hood, Landing Blind by Radio, Major Problems in Radio Design

By Allan F. Bonnalie

Interglacial Man in America

New Minnesota Finds May Date Earlier than Last Glacial Stage, Perhaps 20,000 Years Old

By C. E. Hagie

Erosion Control Checks Floods

Index to Volume 154, January-June, 1936

Departments

  • 50 Years Ago in Scientific American, June 1936

  • Recommended

    Books Selected by the Editors, June 1936

  • Departments

    InfraRed Reveals New Beauties of Nature

  • Our Point of View, June 1936

  • Electric Fly Killer, Wood Crops and More

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June 1936