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

January 01, 1935; vol. 21 no. 1

ZoÖlogy and Anatomy

  • You have access
    On the Evolution of the Skulls of Vertebrates with Special Reference to Heritable Changes in Proportional Diameters (Anisomerism)
    William King Gregory
    PNAS January 1, 1935 21 (1) 1-8; https://doi.org/10.1073/pnas.21.1.1
  • You have access
    The Snakes of the Genus Ninia
    Emmett Reid Dunn
    PNAS January 1, 1935 21 (1) 9-12; https://doi.org/10.1073/pnas.21.1.9

Anthropology and Psychology

  • You have access
    A New Prehistoric Culture in Puerto Rico
    Froelich G. Rainey
    PNAS January 1, 1935 21 (1) 12-16; https://doi.org/10.1073/pnas.21.1.12

Genetics

  • You have access
    The Individual Gene in Relation to the Chromomere and the Chromosome
    H. J. Muller and A. A. Prokofyeva
    PNAS January 1, 1935 21 (1) 16-26; https://doi.org/10.1073/pnas.21.1.16

Geology and Paleontology

  • You have access
    Cricetine-Like Rodents from the Sespe Eocene of California
    Robert W. Wilson
    PNAS January 1, 1935 21 (1) 26-32; https://doi.org/10.1073/pnas.21.1.26
  • You have access
    Fundamental Geodetic Surveys in the United States Nearing Completion
    William Bowie
    PNAS January 1, 1935 21 (1) 32-36; https://doi.org/10.1073/pnas.21.1.32
  • You have access
    Time Measurements of an Ice Readvance at Littleton, N. H
    Richard J. Lougee
    PNAS January 1, 1935 21 (1) 36-41; https://doi.org/10.1073/pnas.21.1.36

Mathematics

  • You have access
    Groups Involving a Set of as Many Conjugates as Commutators
    G. A. Miller
    PNAS January 1, 1935 21 (1) 41-44; https://doi.org/10.1073/pnas.21.1.41
  • You have access
    Sets of Group Elements Involving Only Products of More Than n
    G. A. Miller
    PNAS January 1, 1935 21 (1) 45-47; https://doi.org/10.1073/pnas.21.1.45

Physics

  • You have access
    The Temperature of the Copper Arc
    C. G. Suits
    PNAS January 1, 1935 21 (1) 48-50; https://doi.org/10.1073/pnas.21.1.48
  • You have access
    Spheroidal Functions
    J. A. Stratton
    PNAS January 1, 1935 21 (1) 51-56; https://doi.org/10.1073/pnas.21.1.51
  • You have access
    Addition Formulae for Spheroidal Functions
    Philip M. Morse
    PNAS January 1, 1935 21 (1) 56-62; https://doi.org/10.1073/pnas.21.1.56
  • You have access
    On the Bending of Electromagnetic Micro-Waves Below the Horizon
    Paul S. Epstein
    PNAS January 1, 1935 21 (1) 62-68; https://doi.org/10.1073/pnas.21.1.62
PreviousNext
Back to top

Browse PNAS issues

In this issue

  • Table of Contents
Sign up for alerts

Jump to

  • ZoÖlogy and Anatomy
  • Anthropology and Psychology
  • Genetics
  • Geology and Paleontology
  • Mathematics
  • Physics

PNAS Highlights. Top research, news, and commentary delivered straight to your inbox.

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