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Science, New Series, Vol. 121, No. 3139, Feb. 25, 1955


Previous Issue: New Series, Vol. 121, No. 3138, Feb. 18, 1955
Next Issue: New Series, Vol. 121, No. 3140, Mar. 4, 1955


Front Matter (3 pp.)
Forest Service Observes Its Golden Anniversary, pp. 5A
Dorothy M. Martin

The Work of Many People, pp. 267-275
Edward Teller

A Labile Precursor of Citrovorum Factor, pp. 275-279
Charles A. Nichol; Aaron H. Anton; Sigmund F. Zakrzewski

Frederick D. Heald, Dynamic Plant Pathologist, pp. 279-280
George W. Fischer

News and Notes, pp. 281-290


Book Reviews
----------------, p. 291
Neuere Probleme der Abstammungslebre -- Die transspezifische Evolution
Bernhard Rensch
Review author[s]: Adriano A. Buzzati-Traverso
----------------, pp. 291-292
The Mind and the Eye
Agnes Arber
Review author[s]: William R. Amberson
----------------, p. 292
Relative Chronologies in Old World Archaeology
Robert W. Ehrich
Review author[s]: Machteld J. Mellink
----------------, pp. 292-293
Biochemistry and Human Metabolism
Burnham S. Walker; William C. Boyd; Isaac Asimov
Review author[s]: Walter Frajola
----------------, p. 293
The Theory of Metals
A. H. Wilson
Review author[s]: Karl Lark-Horovitz
----------------, pp. 293-294
Abhandlungen aus der Sowjetischen Astronomie. Folge II. Gesellschaft für Deutsch-Sowjetische Freundschaft
Otto Singer
Review author[s]: D. TER Haar
----------------, p. 294
The Manual of Antibiotics, 1954-1955
Henry Welch
Review author[s]: Hurd M. Jones
----------------, p. 294
Formation des Continents et Progression de la Vie
H. Termier; G. Termier
Review author[s]: Raymond E. Crist
----------------, pp. 294-295
Pigment Cell Growth
Myron Gordon
Review author[s]: Graham DuShane
----------------, p. 295
Explaining the Atom
Selig Hecht
Review author[s]: O. Oldenberg
----------------, pp. 295-296
Linear Transient Analysis
Ernst Weber
Review author[s]: L. Daniel Runkle
----------------, p. 296
Connective Tissues
Charles Ragan
Review author[s]: John A. Arcadi
----------------, p. 296
Grundlagen und Praxis chemischer Tumorbehandlung. Zweites Freiburger Symposion an der Medizinischen Universitäts-Klinik
J. Pirwitz
Review author[s]: Sigismund Peller


Technical Papers
Resistance of Saccharomyces to High Concentrations of Lithium Chloride, pp. 299-300
Wolfgang Laskowski
Hemocyanin and Radioactive Copper, pp. 300-302
Morris Joselow; Charles R. Dawson
Thermodynamic Analysis of the Intracellular Osmotic Gradient Hypothesis of Active Water Transport, pp. 302-303
William A. Brodsky; Warren S. Rehm; Warren H. Dennis; Donald G. Miller
A Study of Leucine Biosynthesis in Torulopsis utilis, pp. 303-304
Murray Strassman; Lillian A. Locke; Alice J. Thomas; Sidney Weinhouse
Segregation of Sex Factors in a Diploid Line of Ustilago zeae Induced by Alpha Radiation, pp. 304-306
J. B. Rowell
Number and Size of Radial Resin Ducts in Slash Pine, pp. 306-307
François Mergen; R. M. Echols
Pheasant-Turkey Hybrids, pp. 307-308
V. S. Asmundson; F. W. Lorenz
Leukemogenic Effects of Ionizing Radiation on Atomic Bomb Survivors in Hiroshima City, pp. 308-309
William C. Moloney; Marvin A. Kastenbaum


Communications
Pollen Profiles, Radiocarbon Dating, and Geologic Chronology of the Lake Michigan Basin, pp. 309-311
James H. Zumberge; J. E. Potzger
Unusual Reagent, p. 311
David E. Green
Bacitracin, p. 311
E. T. Martin; R. E. Mulligan
The Individual in Chemical Research, pp. 311-312
J. P. Phillips
Soda Fe-Mn Pegmatite Phosphates, p. 312
D. Jerome Fisher
``Unpublished'' or ``In Press''?, p. 313
A. L. Bacharach
Method for Extraction of Substances from Liquid Samples, pp. 313-314
Dirceu P. Neves; Yolanda Tavares
Reingestion in the Hare Lepus europaeus Pal., p. 314
J. S. Watson; R. H. Taylor

Previous Issue: New Series, Vol. 121, No. 3138, Feb. 18, 1955
Next Issue: New Series, Vol. 121, No. 3140, Mar. 4, 1955



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