Science, New Series, Vol. 109, No. 2826, Feb. 25, 1949

Previous Issue: New Series, Vol. 109, No. 2825, Feb. 18, 1949
Next Issue: New Series, Vol. 109, No. 2827, Mar. 4, 1949

Luminescent Solids (Phosphors), pp. 183-195

H. W. Leverenz

The Nature of the Organizer, pp. 195-197

Richard M. Eakin

Technical Papers

Thermal Separation of Radiomercury from Radiosodium, p. 198

P. B. Reaser; G. E. Burch; S. A. Threefoot; C. T. Ray

Apricots and Plums as Hosts of Western X-Disease, p. 199

Austin O. Simonds

Aureomycin, a New Antibiotic, pp. 199-200

R. W. Broschard; A. C. Dornbush; S. Gordon; B. L. Hutchings; A. R. Kohler; G. Krupka; S. Kushner; D. V. Lefemine; C. Pidacks

2-Acetylamino-9-C14-Fluorene, p. 200

Francis Earl Ray; C. Robert Geiser

Experiments in Crossing Aedes (Stegomyia) aegypti Linnaeus and Aedes (Stegomyia) albopictus Skuse, pp. 200-201

Wilbur G. Downs; Rollin H. Baker

Effectiveness of Vitamin P Compounds in Counteracting Anticoagulant Action of Dicoumarol, pp. 201-202

Gustav J. Martin; Vinton Swayne

Effect of p-Chlorophenoxyacetic Acid on the Vitamin C Content of Snap Beans Following Harvest, pp. 202-203

John W. Mitchell; Boyce D. Ezell; Marguerite S. Wilcox

A Quantitative Hardness Tester for Food Products, p. 204

Edward Ross

The Properties of the Enzyme-Substrate Compounds of Horse-Radish and Lacto-Peroxidase, pp. 204-208

Britton Chance

Comments and Communications

Pressure Patterns in Bird Migration, p. 209

C. Suffern

On the Carcinogenesis of 2-Substituted Fluorenes, p. 209

Louis A. Pinck

Oyster Mortality in Louisiana, p. 210

Walter A. Chipman

Biological Education in Secondary Schools, p. 210

J. Van Overbeek

In Memoriam

Wesley Clair Mitchell: 1874-1948, pp. 211-212

Joseph H. Willits

Book Reviews

----------------, p. 213

A Text-Book of Mathematical Analysis: The Uniform Calculus and Its Applications

R. L. Goodstein

Review author[s]: Arthur Rosenthal

----------------, p. 213

Sequence in Layered Rocks: A Study of Features and Structures Useful for Determining Top and Bottom or Order of Succession in Bedded and Tabular Rock Bodies

Robert R. Shrock

Review author[s]: Warren O. Thompson

----------------, pp. 213-214

Bibliography of Animal Venoms

R. W. Harmon; C. B. Pollard

Review author[s]: James A. Peters

Scientific Book Register, p. 214
News and Notes, pp. 215-218

Previous Issue: New Series, Vol. 109, No. 2825, Feb. 18, 1949
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