Skip to main content
  • Submit
  • About
    • Editorial Board
    • PNAS Staff
    • FAQ
    • Accessibility Statement
    • Rights and Permissions
    • Site Map
  • Contact
  • Journal Club
  • Subscribe
    • Subscription Rates
    • Subscriptions FAQ
    • Open Access
    • Recommend PNAS to Your Librarian
  • Log in
  • My Cart

Main menu

  • Home
  • Articles
    • Current
    • Special Feature Articles - Most Recent
    • Special Features
    • Colloquia
    • Collected Articles
    • PNAS Classics
    • List of Issues
  • Front Matter
  • News
    • For the Press
    • This Week In PNAS
    • PNAS in the News
  • Podcasts
  • Authors
    • Information for Authors
    • Editorial and Journal Policies
    • Submission Procedures
    • Fees and Licenses
  • Submit
  • About
    • Editorial Board
    • PNAS Staff
    • FAQ
    • Accessibility Statement
    • Rights and Permissions
    • Site Map
  • Contact
  • Journal Club
  • Subscribe
    • Subscription Rates
    • Subscriptions FAQ
    • Open Access
    • Recommend PNAS to Your Librarian

User menu

  • Log in
  • My Cart

Search

  • Advanced search
Home
Home

Advanced Search

  • Home
  • Articles
    • Current
    • Special Feature Articles - Most Recent
    • Special Features
    • Colloquia
    • Collected Articles
    • PNAS Classics
    • List of Issues
  • Front Matter
  • News
    • For the Press
    • This Week In PNAS
    • PNAS in the News
  • Podcasts
  • Authors
    • Information for Authors
    • Editorial and Journal Policies
    • Submission Procedures
    • Fees and Licenses

New Research In

Physical Sciences

Featured Portals

  • Physics
  • Chemistry
  • Sustainability Science

Articles by Topic

  • Applied Mathematics
  • Applied Physical Sciences
  • Astronomy
  • Computer Sciences
  • Earth, Atmospheric, and Planetary Sciences
  • Engineering
  • Environmental Sciences
  • Mathematics
  • Statistics

Social Sciences

Featured Portals

  • Anthropology
  • Sustainability Science

Articles by Topic

  • Economic Sciences
  • Environmental Sciences
  • Political Sciences
  • Psychological and Cognitive Sciences
  • Social Sciences

Biological Sciences

Featured Portals

  • Sustainability Science

Articles by Topic

  • Agricultural Sciences
  • Anthropology
  • Applied Biological Sciences
  • Biochemistry
  • Biophysics and Computational Biology
  • Cell Biology
  • Developmental Biology
  • Ecology
  • Environmental Sciences
  • Evolution
  • Genetics
  • Immunology and Inflammation
  • Medical Sciences
  • Microbiology
  • Neuroscience
  • Pharmacology
  • Physiology
  • Plant Biology
  • Population Biology
  • Psychological and Cognitive Sciences
  • Sustainability Science
  • Systems Biology

Table of Contents

November 01, 1925; vol. 11 no. 11

Paleontology

  • You have access
    The Age and Affinities of the Tertiary Flora of Western Canada
    Edward W. Berry
    PNAS November 1, 1925 11 (11) 671-673; https://doi.org/10.1073/pnas.11.11.671

Physics

  • You have access
    The Metastable 2p3-State of Mercury Atoms
    S. Loria
    PNAS November 1, 1925 11 (11) 673-679; https://doi.org/10.1073/pnas.11.11.673
  • You have access
    Some Experiments on Collisions of the Second Kind
    H. D. Smyth
    PNAS November 1, 1925 11 (11) 679-682; https://doi.org/10.1073/pnas.11.11.679

Engineering

  • You have access
    General Criterion for the Circular Locus of the Current Vector in A. C. Circuits and Machinery
    Vladimir Karapetoff
    PNAS November 1, 1925 11 (11) 683-687; https://doi.org/10.1073/pnas.11.11.683

Mathematics

  • You have access
    Postulates for Reversible Order on a Closed Line (Separation of Point-Pairs)
    Edward V. Huntington
    PNAS November 1, 1925 11 (11) 687-689; https://doi.org/10.1073/pnas.11.11.687

Psychology

  • You have access
    The Hypothesis of Inhibition by Drainage
    Raymond Dodge
    PNAS November 1, 1925 11 (11) 689-691; https://doi.org/10.1073/pnas.11.11.689

Astronomy

  • You have access
    A Test of Electromagnetic Theory of the Hydrogen Vortices Surrounding Sun-Spots
    George E. Hale
    PNAS November 1, 1925 11 (11) 691-696; https://doi.org/10.1073/pnas.11.11.691

Biology

  • You have access
    Recent Evolution in Milk Secretion of Guernsey Cattle
    John W. Gowen
    PNAS November 1, 1925 11 (11) 696-701; https://doi.org/10.1073/pnas.11.11.696

Genetics

  • You have access
    Elimination of Chromosomes Due to a Mutant (Minute-N) in Drosophila Melanogaster
    Calvin B. Bridges
    PNAS November 1, 1925 11 (11) 701-706; https://doi.org/10.1073/pnas.11.11.701
  • You have access
    Haploidy in Drosophila Melanogaster
    Calvin B. Bridges
    PNAS November 1, 1925 11 (11) 706-710; https://doi.org/10.1073/pnas.11.11.706

Physiology

  • You have access
    Plant Growth
    Henry D. Hooker
    PNAS November 1, 1925 11 (11) 710-713; https://doi.org/10.1073/pnas.11.11.710
PreviousNext
Back to top

Browse PNAS issues

In this issue

  • Table of Contents
Sign up for alerts

Jump to

  • Paleontology
  • Physics
  • Engineering
  • Mathematics
  • Psychology
  • Astronomy
  • Biology
  • Genetics
  • Physiology

PNAS Science Sessions podcast

Site Logo
Powered by HighWire
  • Submit Manuscript
  • Twitter
  • Facebook
  • RSS Feeds
  • Email Alerts

Articles

  • Current Issue
  • Special Feature Articles – Most Recent
  • List of Issues

PNAS Portals

  • Anthropology
  • Chemistry
  • Classics
  • Front Matter
  • Physics
  • Sustainability Science
  • Teaching Resources

Information

  • Authors
  • Editorial Board
  • Reviewers
  • Librarians
  • Press
  • Site Map
  • PNAS Updates

Feedback    Privacy/Legal

Copyright © 2021 National Academy of Sciences. Online ISSN 1091-6490