Science, New Series, Vol. 111, No. 2872, Jan. 13, 1950

Previous Issue: New Series, Vol. 111, No. 2871, Jan. 6, 1950
Next Issue: New Series, Vol. 111, No. 2873, Jan. 20, 1950

The Theory of Open Systems in Physics and Biology, pp. 23-29

Ludwig Von Bertalanffy

Technical Papers

Structure of the Earth's Crust in the Continents, pp. 29-30

B. Gutenberg

Effect of Insulin on the Potassium and Inorganic Phosphate Content of the Medium in Experiments with Isolated Rat Diaphragms, pp. 30-31

Chr. E. Kamminga; A. F. Willebrands; J. Groen; J. R. Blickman

The Effect of Changes in Body Weight on Atherosclerosis in the Rabbit, pp. 31-33

J. B. Firstbrook

Discovery of Dioecism in Laboulbenia formicarum, pp. 33-34

R. K. Benjamin; Leland Shanor

A Method for Concentration and Segregation of Malignant Cells from Bloody, Pleural, and Peritoneal Fluids, pp. 34-36

Don W. Fawcett; Bert L. Vallee; Marjorie H. Soule

A Multiple-Standard, Vertical-View Comparator for Microdeterminations, pp. 36-38

Henry O. Schulze

Effect of Panparnit on Brain Wave Changes Induced by Diisopropyl Fluorophosphate (DFP), pp. 38-39

C. F. Essig; J. L. Hampson; P. D. Bales; Alice Willis; H. E. Himwich

Development and Viability of Drosophila melanogaster on a Medium Containing DDT, pp. 39-40

Bernard Fram Kalina

Microscopic Observation of the Living Tooth Pulp, p. 40

A. Cecil Taylor

Comments and Communications

Radio Noise of Ionospheric Origin, p. 41

Herman V. Cottony

Errata, p. 41

Edwin M. McMillan

Scientists' Responsibility for Preventing War, pp. 41-42

Harlow Shapley; Herman S. Wigodsky

The Probit Method, pp. 42-43

Jerome Cornfield; Gordon Haskell

On Gates' Human ancestry, p. 43

Henry E. Garrett; W. M. Krogman

Book Reviews

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Les Chromosomes des Vertébrés

Robert Matthey

Review author[s]: Franz Schrader

----------------, pp. 44-45

Best Science Fiction Stories: 1949

Everett F. Bleiler; T. E. Dikty

Review author[s]: J. R. Pierce

----------------, pp. 45-46

Nature-Nurture Controversy

Nicholas Pastore

Review author[s]: Anne Anastasi

----------------, p. 46

Contributions to Embryology

Review author[s]: A. Elizabeth Adams

News and Notes, pp. 47-50

Previous Issue: New Series, Vol. 111, No. 2871, Jan. 6, 1950
Next Issue: New Series, Vol. 111, No. 2873, Jan. 20, 1950