to days but to the 4x4=16 clans. At the same time the
element names conveyed in a general way the occupation of each of the four
divisions of people as well as their places of abode in reference to the
capital. Accordingly, the earth people would specially attend to
agriculture, mining, the manufacture of pottery, etc.; water people to
irrigation, the furnishing of drinks, fishing, etc.; the fire people to
all occupations which had to do with fire: the procuring of combustibles
for fire and lighting, cooking, the working in metals, etc.

As on the stone, the sign calli=house is in juxtaposition to the symbol
for air, it may be inferred that the air people were the builders, the
masons, the artificers, the Nahuatl name for which was "toltecatl." As the
air symbol occupies the place of highest honor in reference to the central
face, namely, above the right hand, it is evident that the builders, or
"toltecas," were the caste which enjoyed the highest consideration. Their
totem was the bird, the inhabitant of the air. The second rank in honor
was held by the fire people placed to the left, above. Their totem was the
ocelot.

Without going further into details for the present, I merely point out
that the identical division of the members of each community and
association with the elements, etc., was carried out throughout the state.
This method clearly established the relation and also determined the
geographical position of each class of people in reference to the whole.

The carved band on the Calendar-stone, with its twenty signs, determined
once and for all time the exact position to be taken up in all public
assemblages, in councils, sacred dances, and likewise controlled the
exposition of the products of the land in the great market-place. What is
more: each division of the people, by reason of its indissoluble union to
one element and one region, also had its own season during which it led in
ceremonial observances. So skilfully was the lunar ceremonial or religious
year devised that each sign, without any distinction, ruled a period of
thirteen days. At the same time the period fell into four divisions headed
by the four principal or element signs.

In the solar or civil year, each sign had its day, but as the computation
of years passed by, each sign in due rotation ruled during one year. It
was only when each sign had had an equal rule that the cycle completed
itself, and, in turn, became a part of a greater cycl