caxtolpohualli (Osu1v)
This notation from the Codex Osuna, folio 1 verso (Image 5), shows 15 upright flags or banners, in a horizontal row, flying toward the viewer’s right. The posts for the flags are painted a light brown or tan color, probably with watercolor, and the posts are probably made of wood. A red line beneath each group of five flags connects them. Each flag has a value of 20, so five of these flags would have a value of 100. The three groups of 100 provide a total value is 300.
Stephanie Wood
One could teach this notation as a variety of math lessons, 5 + 5 + 5 = 15, 3 x 5 = 15, 5 x 20 = 100, 3 x 100 = 300, and 15 x 20 = 300. Note that cempohualli is another way to say 20, and it has the same -pohualli suffix plus the number one (ce) at the front, resulting in 1 x 20. Before the letter “p,” cen-, the combining form of ce, finds its “n” changing to cem. With caxtolpohualli, the final -li of caxtolli drops away before the -pohualli. A flag (pamitl) used to be held up by a labor boss who was in charge of gathering and supervising 20 (or groups of 20) men. This may be how it came to be equated with the number twenty. See the macuiltecpanpixqui, below, who held up five flags (5 x 20).
Stephanie Wood
1551–1565
Jeff Haskett-Wood
números, quince, veinte, trescientos, matemáticas, notación, banderas
caxtol(li), fifteen, https://nahuatl.wired-humanities.org/content/caxtolli
pohual(li), twenty, https://nahuatl.wired-humanities.org/content/pohualli
cempohual(li), twenty, https://nahuatl.wired-humanities.org/content/cempohualli
cen, the combining form for the number one, https://nahuatl.wired-humanities.org/content/cen-0
pam(itl), flag or banner, https://nahuatl.wired-humanities.org/content/pamitl
quince por veinte, o 300
Stephanie Wood
Library of Congress Online Catalog and the World Digital Library, Osuna Codex, or Painting of the Governor, Mayors, and Rulers of Mexico (Pintura del Gobernador, Alcaldes y Regidores de México), https://www.loc.gov/resource/gdcwdl.wdl_07324/. The original is located in the Biblioteca Nacional de España.
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