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Volume 15(3);  March 15, 1929
Astronomy
THE LONGITUDE OF THE GALACTIC CENTER AS DERIVED FROM THE INTENSITIES OF DETACHED CALCIUM LINES
Otto Struve
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 163–166.
PMCID: PMC522425
THE LARGE RADIAL VELOCITY OF N. G. C. 7619
Milton L. Humason
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 167–168.
PMCID: PMC522426
A RELATION BETWEEN DISTANCE AND RADIAL VELOCITY AMONG EXTRA-GALACTIC NEBULAE
Edwin Hubble
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 168–173.
PMCID: PMC522427
STUDIES OF THE GALACTIC CENTER. IV. ON THE TRANSPARENCY OF THE GALACTIC STAR CLOUDS
Harlow Shapley
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 174–177.
PMCID: PMC522428
Chemistry
THE AUTOXIDATION OF HYDROQUINONES CATALYZED BY MANGANOUS SALTS IN ACID SOLUTIONS. A REACTION WHOSE VELOCITY IS PROPORTIONAL TO THE DRIVING FORCE
Victor K. La Mer and J. W. Temple
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 191–194.
PMCID: PMC522431
THE TEMPERATURE COEFFICIENTS OF SOME PHOTOCHEMICAL REACTIONS
George B. Kistiakowsky
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 194–197.
PMCID: PMC522432
Genetics
THE CELL DIVISION AT WHICH CROSSING-OVER TAKES PLACE
John W. Gowen
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 266–268.
PMCID: PMC522446
AN UNEXPECTED ASSOCIATION OF FACTORS BELONGING TO THREE LINKAGE GROUPS IN OENOTHERA AND ITS EXPLANATION
George H. Shull
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 268–274.
PMCID: PMC522447
Geology and Paleontology
STUDIES OF ORBITOIDAL FORAMINIFERA: THE SUBGENUS POLYLEPIDINA OF LEPIDOCYCLINA AND ORBITOCYCLINA, A NEW GENUS
Thomas Wayland Vaughan
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 288–295.
PMCID: PMC522451
Mathematics
SOME PROBLEMS OF BUSINESS FORECASTING
C. F. Roos
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 186–191.
PMCID: PMC522430
LINEAR TRANSFORMATIONS IN HILBERT SPACE. I. GEOMETRICAL ASPECTS
M. H. Stone
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 198–200.
PMCID: PMC522433
ON COMMUTATION RULES IN THE ALGEBRA OF QUANTUM MECHANICS
Neal H. McCoy
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 200–202.
PMCID: PMC522434
SOME THEOREMS CONCERNING PROPERLY IRREGULAR CYCLOTOMIC FIELDS
H. S. Vandiver
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 202–207.
PMCID: PMC522435
Physics
THE VISUAL ACUITY OF THE BEE AND ITS RELATION TO ILLUMINATION
Selig Hecht and Ernst Wolf
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 178–185.
PMCID: PMC522429
THE THERMODYNAMICS OF GASES WHICH SHOW DEGENERACY (ENTARTUNG)
Gilbert N. Lewis and Joseph E. Mayer
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 208–218.
PMCID: PMC522436
CONTROL OF AN ARC DISCHARGE BY MEANS OF A GRID
Albert W. Hull and Irving Langmuir
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 218–225.
PMCID: PMC522437
THE HEAT OF DISSOCIATION OF NITROGEN
Joseph Kaplan
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 226–229.
PMCID: PMC522438
EXPONENTIAL YIELD OF POSITIVE IONS IN ARGON
Katharine B. Blodgett
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 230–234.
PMCID: PMC522439
ON THE RAMAN EFFECT IN DIATOMIC GASES
F. Rasetti
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 234–237.
PMCID: PMC522440
ADIABATIC EXPANSION IN CASE OF VANISHING INCREMENTS. II
Carl Barus
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 237–241.
PMCID: PMC522441
ON ELECTRONS THAT ARE “PULLED OUT” FROM METALS
Edwin H. Hall
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 241–251.
PMCID: PMC522442
A PRELIMINARY REPORT ON THE MEASUREMENT OF THE Kα LINE OF CARBON
Carl E. Howe
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 251–253.
PMCID: PMC522443
ON THE IMPERFECTIONS OF CRYSTALS
F. Zwicky
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 253–259.
PMCID: PMC522444
THE MECHANISM OF SPARK DISCHARGE
Leonard J. Neuman
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 259–265.
PMCID: PMC522445
Physiology and Pathology
AN INHERENT DEFECT IN THE THEORY THAT GROWTH RATE IS CONTROLLED BY AN AUTOCATALYTIC PROCESS
George D. Snell
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 274–281.
PMCID: PMC522448
CHLOROPHYLL CONTENT AND RATE OF PHOTOSYNTHESIS
Robert Emerson
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 281–284.
PMCID: PMC522449
FUNCTIONAL DISTURBANCES OF HEARING IN GUINEA PIGS AFTER LONG EXPOSURE TO AN INTENSE TONE
Morgan Upton
Proc Natl Acad Sci U S A. 1929 March 15; 15(3): 284–287.
PMCID: PMC522450
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