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Volume 42(4);  April 1956
The cover of the journal
Astronomy
ELEMENT-BUILDING REACTIONS IN STARS
William A. Fowler and Jesse L. Greenstein
Proc Natl Acad Sci U S A. 1956 April; 42(4): 173–180.
PMCID: PMC528246
Biochemistry
A COMPARISON OF THE HYDROGENASE ACTIVITIES OF DIFFERENT MICROÖRGANISMS
Alvin I. Krasna and D. Rittenberg
Proc Natl Acad Sci U S A. 1956 April; 42(4): 180–185.
PMCID: PMC528247
Genetics
GROWTH RESPONSE OF SINGLE-GENE DWARF MUTANTS IN MAIZE TO GIBBERELLIC ACID
Bernard O. Phinney
Proc Natl Acad Sci U S A. 1956 April; 42(4): 185–189.
PMCID: PMC528248
THE q LOCUS OF NEUROSPORA CRASSA
Patricia St. Lawrence
Proc Natl Acad Sci U S A. 1956 April; 42(4): 189–194.
PMCID: PMC528249
A CASE OF POLYPLOIDY IN DIPTERA
Harrison D. Stalker
Proc Natl Acad Sci U S A. 1956 April; 42(4): 194–199.
PMCID: PMC528250
Mathematics
ON COVERING A CIRCLE BY RANDOMLY PLACED ARCS
Aryeh Dvoretzky
Proc Natl Acad Sci U S A. 1956 April; 42(4): 199–203.
PMCID: PMC528251
COMBINATORIAL PROBLEMS IN THE THEORY OF GRAPHS. II
G. W. Ford, R. Z. Norman, and G. E. Uhlenbeck
Proc Natl Acad Sci U S A. 1956 April; 42(4): 203–208.
PMCID: PMC528252
ON THE LITTLEWOOD-PALEY FUNCTION g* (θ)
A. Zygmund
Proc Natl Acad Sci U S A. 1956 April; 42(4): 208–212.
PMCID: PMC528253
Psychology
THE SENSITIVITY OF THE TURTLE'S EAR AS SHOWN BY ITS ELECTRICAL POTENTIALS
Ernest Glen Wever and Jack A. Vernon
Proc Natl Acad Sci U S A. 1956 April; 42(4): 213–220.
PMCID: PMC528254
Journal Matter
Original table of contents page
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