9. Atl. Water, unlucky, typifying floods and death; associated with Xiuhtecutli.
10. Itzcuintli. A dog (sometimes the ear only is shown), rank and riches; associated with Mictlantecutli.
11. Ozomatli. A monkey, implies cleverness and craftsmanship, combined with instability; associated with Xochipilli.
12. Malinalli. Grass, sometimes shown as a jawbone with grass hair, unlucky; associated with Patecatl.
13. Acatl. A reed, implying emptiness; associated with Itztlacoliuhqui.
14. Ocelotl. An ocelot (sometimes the ear only is shown); success in war and love, but suggesting a death by sacrifice (the typical death of a warrior). Associated with Tlazolteotl.
15. Quauhtli. An eagle, implying courage in war; associated with Xipe.
16. Cozcaquauhtli. A vulture, signifying old age; associated with Itzpapalotl.
17. Olin. A sign emblematical of movement (used also to signify an earthquake). Variable in fortune, and associated with Nanauatzin.
18. Tecpatl. A stone knife, the emblem of drought and sterility, associated with Tezcatlipoca.
19. Quiauitl. The head of Tlaloc, emblem of rain; an unlucky sign.
20. Xochitl. A flower, implying good craftsmanship; associated with Xochiquetzal.
These signs ran consecutively in the order given above, one being assigned to each day, and the series was repeated ad infinitum. Conjointly with them were repeated the numerals 1 to 13; e.g. 1. cipactli, 2. eecatl, 3. calli, and so on to 13. acatl, which was followed by 1. ocelotl, 2. quauhtli, and so forth. There being no common factor to the numbers 13 and 20, a period of
