The Duodecimal Bulletin

is an official publication of The Dozenal Society of America, Inc.
Editorial Office:
5106 Hampton Avenue
Suite 205
Saint Louis, MO 63109-3115

Michael De Vlieger, Editor

Index Links:

About the Bulletin

Archive Index

Pictorial Synopses:
011-00 to 043-0E
051-10 to 0E2-1E
101-20 to 152-2E
161-30 to 230-3E
240-40 to 293-4E
2X1-50 to 313-5E
314-60 to 352-6E
361-70 to 3E2-7E
401-80 to 452-8E
461-90 to 4E2-9E
501-X0 to 552-XE

About the Archive

The Duodecimal Bulletin Pictorial Index

Whole Numbers 90; (nine dozen) through 9E; (nine dozen eleven)

Back issues between 11E1; (2005.) and 11E4; (2008.) will be available in the near future as web optimized PDF documents. Digital issues since late 2008, excepting the penultimate and the current issues, are available as PDF documents. Click on the icon of the magazine to view a PDF of the corresponding issue. Click on “TOC”, where it appears, to view a table of contents.

Click here for more information about the pictorial archive (Please scroll to the bottom of the destination page).

Visit the Main Index | «« First | « Previous | Next » | Last »» pictorial index.

461-90 (2005)
“Whence the Octothorpe”
Ternary computers &
money, McClellan

462-91 (2005)
Aspirant’s Test No. 1,
Leubner’s dozenal

471-92 (2006)
First DSA Website,
Schiffman’s “The
Most Appealing Integer”
part 1, Aspirant’s Test 2

472-93 (2006)
Schiffman Part 2,
(Rhombic) Dodecahedron,
Whillock obituary,
Tengwar numerals

481-94 (2007)
Proctor’s essay on
alternative bases,
“EU’s Metric

482-95 (2007)
Evans’ “Numbers
Cheaper by the Dozen?”
On the name change
of the DSA

491-96 (2008)
Evans’ essay part 2,
Zirkel’s extension of
Schumacher’s binary
coded digits

492-97 (2008), TOC
History of the DSA
New Media and Digital
Bulletin, Return to
classic numerals

4X1-98 (2009), TOC
History of the DSGB
Osburn’s Number base
study, Clayton’s
Dozenal nomenclature

4X2-99 (2010), TOC
The Symbology Issue 1
Symbology Overview
Dozenal Numerals Feature
LaTeX Dozenal Displays

4E1-9X (2010), TOC
Digital Fractions
The Symbology Issue 2
Tools for Numeral Craft
DozensOnline Digest

4E2-9E (2011), TOC
Dozenal Home Primes
Pronouncing Dozenals
Simon Stevin
Key Dozenal Fractions

Visit the Main Index | «« First | « Previous | Next » | Last »» pictorial index.

The ninth Duodecimal Bulletin duodecade continues the trends of the previous dozen issues, minus the anti-metric sentiment. Some reprints grace the early pages, like Nina McClellan’s dozenal essay and two of the four Aspirant’s tests. Prof. Schiffman celebrates “The Most Appealing Integer Twelve”. Scott Proctor’s essay discusses various historical number systems, while Ms. Addie Evans pens an eloquent dozenal essay, originally on the hunt for a rational expression for transcendental numbers through alternative bases. Prof. Gene Zirkel extends the much-heralded seven-segment Schumacher binary-coded hexadecimal digit system to cover base five dozen four. In August 2005, DSGB member Bryan Parry started the DozensOnline web forum. In many ways, the excited chats on this forum resemble the ruminations of our Founders, sending letters to one another in New England and California five dozen plus years earlier.

The Third Generation: The Digital Bulletin

In mid 2008, the Duodecimal Bulletin enters a new era in digital full color. Through the power of contemporary software, vintage color photographs of some early Members animate the histories of the DSA and DSGB in Vols. 49; and 4X;. Dozenal numerals are analyzed and celebrated in a two-part symbology theme, the software overcoming the long-mentioned difficulties with newly-devised numeral symbols. Wolfram Mathematica output can be folded into text seamlessly. Vol. 4X; No. 2 is the first issue to be distributed digitally as well as in print. Prof. Schiffman examines home primes in the last issue of the duodecade. In the closing issues of this duodecade, the Duodecimal Bulletin will be linked more often to material on the website. The future of the Bulletin is in your hands! Join us in our dozenal debate...send in your thoughts and ideas. Continue »

This page revised Saturday 3 September 2011.