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Volume 39(9);  September 1953
The cover of the journal
Biochemistry
Alteration of the Kinetic Properties of an Enzyme by the Binding of Buffer, Inhibitor, or Substrate
Robert A. Alberty and Robert M. Bock
Proc Natl Acad Sci U S A. 1953 September; 39(9): 895–900.
PMCID: PMC1063877
A Light Activation Phenomenon in the Enzymatic and Nonenzymatic Reduction of Tetrazolium Salts
Walter J. Nickerson and Joseph R. Merkel
Proc Natl Acad Sci U S A. 1953 September; 39(9): 901–905.
PMCID: PMC1063878
Botany
The Interaction of Auxin and Light in the Growth Responses of Plants
James L. Liverman and James Bonner
Proc Natl Acad Sci U S A. 1953 September; 39(9): 905–916.
PMCID: PMC1063879
Chemistry
The Conductance of Solutions of Salts in Orthodichlorobenzene
Filippo Accascina, E. Lowell Swarts, Philip L. Mercier, and Charles A. Kraus
Proc Natl Acad Sci U S A. 1953 September; 39(9): 917–924.
PMCID: PMC1063880
Genetics
The Effect of Indole-3-Acetic Acid on Datura Embryos
J. Rietsema, S. Satina, and A. F. Blakeslee
Proc Natl Acad Sci U S A. 1953 September; 39(9): 924–933.
PMCID: PMC1063881
Geophysics
On the Origin of Continents and Mountains
Harold C. Urey
Proc Natl Acad Sci U S A. 1953 September; 39(9): 933–946.
PMCID: PMC1063882
Mathematics
Bottleneck Problems and Dynamic Programming
Richard Bellman
Proc Natl Acad Sci U S A. 1953 September; 39(9): 947–951.
PMCID: PMC1063883
On Steenrod's Reduced Powers, the Index of Inertia, and the Todd Genus
Friedrich Hirzebruch
Proc Natl Acad Sci U S A. 1953 September; 39(9): 951–956.
PMCID: PMC1063884
The Ideas of Variable and Function
Karl Menger
Proc Natl Acad Sci U S A. 1953 September; 39(9): 956–961.
PMCID: PMC1063885
Pairs of Matrices with Property L
T. S. Motzkin and Olga Taussky
Proc Natl Acad Sci U S A. 1953 September; 39(9): 961–963.
PMCID: PMC1063886
On Restricted Partitions and a Generalization of the Euler [var phi] Number and the Moebius Function
Charles A. Nicol
Proc Natl Acad Sci U S A. 1953 September; 39(9): 963–968.
PMCID: PMC1063887
Characterization of Quadratic Forms Over Local Fields
O. T. O'Meara
Proc Natl Acad Sci U S A. 1953 September; 39(9): 969–972.
PMCID: PMC1063888
The Axiom of Choice in Quine's New Foundations for Mathematical Logic
Ernst P. Specker
Proc Natl Acad Sci U S A. 1953 September; 39(9): 972–975.
PMCID: PMC1063889
Physics
Nuclear Reactions with Energetic Nitrogen Ions
H. L. Reynolds, D. W. Scott, and A. Zucker
Proc Natl Acad Sci U S A. 1953 September; 39(9): 975–985.
PMCID: PMC1063890
Zoology
The Differentiation of Gastrula Ectoderm in Medium Conditioned by Axial Mesoderm
M. C. Niu and V. C. Twitty
Proc Natl Acad Sci U S A. 1953 September; 39(9): 985–989.
PMCID: PMC1063891
Journal Matter
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