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Volume 4(6);  June 1918
The cover of the journal
Chemistry
Notes on Isotopic Lead
Frank Wigglesworth Clarke
Proc Natl Acad Sci U S A. 1918 June; 4(6): 181–188.
PMCID: PMC1091436
Geology
The Study of the Sediments as an Aid to the Earth Historian
Eliot Blackwelder
Proc Natl Acad Sci U S A. 1918 June; 4(6): 163–167.
PMCID: PMC1091432
Mineralogy
Tests for Fluorine and Tin in Meteorites with Notes on Maskelynite and the Effect of Dry Heat on Meteoric Stones
George P. Merrill
Proc Natl Acad Sci U S A. 1918 June; 4(6): 176–180.1.
PMCID: PMC1091435
Pathology
The Destruction of Tetanus Antitoxin by Chemical Agents
W. N. Berg and R. A. Kelser
Proc Natl Acad Sci U S A. 1918 June; 4(6): 174–176.
PMCID: PMC1091434
Physiology
Effects of a Prolonged Reduction in Diet on 25 Men: I. Influence on Basal Metabolism and Nitrogen Excretion
Francis G. Benedict and Paul Roth
Proc Natl Acad Sci U S A. 1918 June; 4(6): 149–152.
PMCID: PMC1091428
Effects of a Prolonged Reduction in Diet on 25 Men: II. Bearing on Neuro-Muscular Processes and Mental Condition
Walter R. Miles
Proc Natl Acad Sci U S A. 1918 June; 4(6): 152–156.
PMCID: PMC1091429
Effects of a Prolonged Reduction in Diet on 25 Men: III. Influence on Efficiency During Muscular Work
H. Monmouth Smith
Proc Natl Acad Sci U S A. 1918 June; 4(6): 157–159.
PMCID: PMC1091430
Zoology
Possible Action of the Sex-Determining Mechanism
C. E. McClung
Proc Natl Acad Sci U S A. 1918 June; 4(6): 160–163.
PMCID: PMC1091431
The Growth of the Alaskan Fur Seal Herd Between 1912 and 1917
G. H. Parker
Proc Natl Acad Sci U S A. 1918 June; 4(6): 168–174.
PMCID: PMC1091433
Journal Matter
Original table of contents page
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Administrative content — journal masthead, notices, indexes, etc.
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