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Volume 13(10);  October 1927
The cover of the journal
Chemistry
The Heterogeneous Thermal Decomposition of Ammonia in Strong Electric Fields
Robert E. Burk
Proc Natl Acad Sci U S A. 1927 October; 13(10): 719–720.
PMCID: PMC1085201
The Photochemical Decomposition of Hydrogen-Iodide; the Mode of Optical Dissociation
Bernard Lewis
Proc Natl Acad Sci U S A. 1927 October; 13(10): 720–726.
PMCID: PMC1085202
The Detection of Uranium by a Photoluminescence Test
Jacob Papish and L. E. Hoag
Proc Natl Acad Sci U S A. 1927 October; 13(10): 726–728.
PMCID: PMC1085203
Genetics
A Working Hypothesis for Segmental Interchange between Homologous Chromosomes
John Belling
Proc Natl Acad Sci U S A. 1927 October; 13(10): 717–718.
PMCID: PMC1085200
Mathematics
Groups Generated by Two Operators of Order Three, the Cube of Whose Product is Invariant
G. A. Miller
Proc Natl Acad Sci U S A. 1927 October; 13(10): 708–710.
PMCID: PMC1085198
Some Separation Theorems
R. L. Moore
Proc Natl Acad Sci U S A. 1927 October; 13(10): 711–716.
PMCID: PMC1085199
Physics
Absorption of Ultra-Sonic Waves by Hydrogen and Carbon Dioxide
T. P. Abello
Proc Natl Acad Sci U S A. 1927 October; 13(10): 699–701.
PMCID: PMC1085195
On the Fine Structure of Some Mercury Lines
W. H. McCurdy
Proc Natl Acad Sci U S A. 1927 October; 13(10): 701–703.
PMCID: PMC1085196
On the Duration of the Existence of Doubly Charged Positive Ions in Gases, and Their Detection
Leonard B. Loeb
Proc Natl Acad Sci U S A. 1927 October; 13(10): 703–707.
PMCID: PMC1085197
Statistics
Cancer Studies in Massachusetts: 1. The Relationship between Cancer and Density of Population in Massachusetts
Herbert L. Lombard and Carl R. Doering
Proc Natl Acad Sci U S A. 1927 October; 13(10): 728–735.
PMCID: PMC1085204
Zoölogy
The Application of Experimental Methods to the Study of Developing Fundulus Embryos
J. S. Nicholas
Proc Natl Acad Sci U S A. 1927 October; 13(10): 695–698.
PMCID: PMC1085193
The Action of Na, K and Ca Chlorides on the Egg of Fundulus
J. H. Bodine
Proc Natl Acad Sci U S A. 1927 October; 13(10): 698–699.
PMCID: PMC1085194
Journal Matter
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