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Volume 13(7);  July 1927
The cover of the journal
Anthropology
The Architectural Evolution of Pueblo Bonito
Neil M. Judd
Proc Natl Acad Sci U S A. 1927 July; 13(7): 561–563.
PMCID: PMC1085076
Astronomy
Polarization of Light Reflected from Rough Surfaces with Special Reference to Light Reflected by the Moon
F. E. Wright
Proc Natl Acad Sci U S A. 1927 July; 13(7): 535–540.
PMCID: PMC1085069
The Trails of Two Periodically Flickering Meteors
Willard J. Fisher, Esther L. Wurl, and Marjorie S. Desmond
Proc Natl Acad Sci U S A. 1927 July; 13(7): 540–546.
PMCID: PMC1085070
Botany
The Embryology of Equisetum Debile Roxb
D. H. Campbell
Proc Natl Acad Sci U S A. 1927 July; 13(7): 554–555.
PMCID: PMC1085074
The Effect of Small Amounts of Chemicals in Increasing the Life Activities of Plants
F. E. Denny
Proc Natl Acad Sci U S A. 1927 July; 13(7): 555–561.
PMCID: PMC1085075
Chemistry
The Uni-Molecular Decomposition of Azo-Methane; the Adequacy of Activation by Collision
Bernard Lewis
Proc Natl Acad Sci U S A. 1927 July; 13(7): 546–549.
PMCID: PMC1085071
On X-Ray Diffraction Patterns from Liquids and Colloidal Gels
G. L. Clark, R. H. Aborn, E. W. Brugmann, and R. L. Davidson
Proc Natl Acad Sci U S A. 1927 July; 13(7): 549–552.
PMCID: PMC1085072
Pathology
The Effect of Tubercle Bacilli and the Chemical Fractions Obtained from Analysis on the Cells of the Connective Tissues in Rabbits
Florence R. Sabin and Charles A. Doan
Proc Natl Acad Sci U S A. 1927 July; 13(7): 552–554.
PMCID: PMC1085073
Physics
Zeeman Effect and Structure in the Spark Spectra of Tin
J. B. Green and R. A. Loring
Proc Natl Acad Sci U S A. 1927 July; 13(7): 492–495.
PMCID: PMC1085060
The Structure of Certain Bands in the Visible Spectrum of Boron Monoxide
Francis A. Jenkins
Proc Natl Acad Sci U S A. 1927 July; 13(7): 496–503.
PMCID: PMC1085061
Pressure Phenomena of the Mucronate Anode
Carl Barus
Proc Natl Acad Sci U S A. 1927 July; 13(7): 503–505.
PMCID: PMC1085062
On the Lag of the Kerr Effect
J. W. Beams and Ernest O. Lawrence
Proc Natl Acad Sci U S A. 1927 July; 13(7): 505–510.
PMCID: PMC1085063
Mobilities of Ions in Acetylene Hydrogen Mixtures
L. B. Loeb and L. Du Sault
Proc Natl Acad Sci U S A. 1927 July; 13(7): 510–516.
PMCID: PMC1085064
Current Distribution in Supraconductors
Francis B. Silsbee
Proc Natl Acad Sci U S A. 1927 July; 13(7): 516–518.
PMCID: PMC1085065
On the Reflection of Electrons from Crystal Lattices
F. Zwicky
Proc Natl Acad Sci U S A. 1927 July; 13(7): 518–525.
PMCID: PMC1085066
Displacement of Certain Multiplets and Multiple Levels for Elements in the First Long Period
R. C. Gibbs and H. E. White
Proc Natl Acad Sci U S A. 1927 July; 13(7): 525–531.
PMCID: PMC1085067
Energy Relationships and Ionization Potentials of Atoms of the First Row of the Periodic Table in All Stages of Ionization
R. A. Millikan and I. S. Bowen
Proc Natl Acad Sci U S A. 1927 July; 13(7): 531–535.
PMCID: PMC1085068
Zoölogy
Additional Evidence as to the Intercellular Formation of Connective Tissue
George A. Baitsell
Proc Natl Acad Sci U S A. 1927 July; 13(7): 481–484.
PMCID: PMC1085057
Results of Heteroplastic Transplantations of the Heart Rudiment in Amblystoma Embryos
W. M. Copenhaver
Proc Natl Acad Sci U S A. 1927 July; 13(7): 484–488.
PMCID: PMC1085058
Vision and Retinal Structure in Mice
A. E. Hopkins
Proc Natl Acad Sci U S A. 1927 July; 13(7): 488–492.
PMCID: PMC1085059
Journal Matter
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