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The Census

The 17th decennial count of the human resources of the U. S. reveals that the population increase of the past decade was much larger than expected

By Philip M. Hauser

Paradoxes of the Mississippi

The water of the great river is generally assumed to be muddy, its bed rising above the surrounding country, its delta building out into the Gulf of Mexico. None of these assumptions is true

By Gerard H. Matthes

The Sutton Hoo Ship-Burial

The rich tomb of a seventh-century Anglo-Saxon king has yielded an archaeological treasure that illuminates an obscure period in the history of the English people

By R. L. S. Bruce-Mitford

Reactors

The machines designed for the controlled use of nuclear energy take many forms and present many problems. A report on some typical reactors and the AEC program of reactor development

By Lawrence R. Hafstad

Cataclysmic Evolution

Many plants (e.g., wheat, cotton, tobacco) evolved suddenly by a process involving the doubling of chromosomes. The same process is artificially induced to create useful new species

By G. Ledyard Stebbins Jr.

The Imitative Drugs

The fact that a counterfeit molecule will compete for the place of a natural one in biochemical reactions has made possible a rewarding study of drug action and metabolism

By Richard O. Roblin Jr.

The Squid

Largest, fastest, most vicious and probably most beautiful of the animals without backbones, it possesses a nervous system that is uniquely useful to the modern physiologist

By H. B. Steinbach

Departments

  • 50 and 100 Years Ago: April 1951

  • Science and the Citizen: April 1951

  • Shakespeare the Physicist

  • Letters

    Letters to the Editors, April 1951

  • Recommended

    Books

  • Amateur Scientist

    The Amateur Astronomer

  • Departments

    Bibliography

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