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Dozenal Society of America
Promoting base twelve and alternative base mathematics
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The Dozenal Society of America
The DSA is a voluntary, nonprofit education corporation, organized for the conduct of research and education of the public in the use of dozenal (also called duodecimal or base-twelve) in calculations, mathematics, weights and measures, and other branches of pure and applied science.

The Duodecimal Bulletin

◀️ Issue: Whole Number 59z (69d) | Vol. 31z (37d) No. 1 | Year 1198z (1988d) ▶️



Click to view PDF

Editor: Dr. Patricia Zirkel

Cover Title: Did the Egyptians Count in Dozens?

Contents:

  • Minutes of Annual Meeting of 1987 (1197;)
    • Board of Directors Meeting
    • Annual Membership Meeting
      • President’s Report | Gene Zirkel
      • Treasurer’s Report | James Malone
      • Editor’s Report | Patricial Zirkel
      • Committee Reports
        • Finance Committee | Dr. Angelo Scordato
        • Constitution and Bylaws Committee | Gene Sirkel
        • Awards Committee | Dr. Angelo Scordato
        • Nominating Committee | Alice Berridge
      • New Business
    • Afternoon Presentations
      • Ellis Von Eschen | Divisibility Tests: decimal, terminal and recursive
      • Fred Newhall | Frequency in Music
      • Dr. Paul Rapoport | Dozenal Clock
    • Evening Banquet
  • DSA Annual Award 1197; | Professor James Malone
  • A Debate | Did the Egyptians Count in Dozens?
    • Duodecimals in Antiquity | David Singmaster
    • Origins of Dozenal Metrology | Gerard Brost
  • Science Fiction Contest
  • Videotape Available!
    • Introduction: A Dozenal Panda
    • Prof. James Malone, Nassau C.C. | Dozens and Dozens of Eggs
    • NBC TV Clip 3/26/1985 | Dozens and Dozens of Pencils
    • Fred Newhall, Smithtown NY | Use of an Accuracy Scale
    • Dudley George, Palo Alto CA | Dozens in Measurement
    • Walter Berkmann, Norwalk CT | Design and Use of a Dozenal Abacus
    • Prof. Gene Zirkel, Nassau C.C. | Use of Symbols
  • Message from DSA Board Chair | Fred Newhall
  • Dozenal Jottings
    • Bjarke Nielsen (Denmark)
    • Fred Newhall | talk at Willow Road Elementary School
    • Edith Andrews
    • Don Hammond (DSGB)
    • Jerry Brost
    • Gene Zirkel | I'm a Dozener | published in The Triad, League of Reason
      • reply from Matthew Weitendorf, League of Reason
    • Jamison Handy Jr. and Vera Sharp Handy
    • New Members
      • Vera Sharp Handy
      • Les Robbins
  • Why Change?
  • Counting in Dozens