THOMAS] NUMBERS IN THE MEXICAN CODICES 943 
of plate 11; and twelve more to Xochitl, right of the left series, same 
plate; counting twelve more brings us to Acatl. As this makes no 
connection, let us try another method: Counting from Atl, the left 
(upper) name of the right series of plate 12, we reach Ehecatl, left 
(upper) name of the left series,same plate; twelve more to Quauhtli, 
left (upper) name of the right series of plate 11; twelve more to 
Tochtli, left (upper) name of the left series, same plate; and twelve 
more to Cipacth, the beginning. This proves that the reading is to 
the left and upward, and that from a day in one section to the corre- 
sponding day in the next section an interval of twelve days is to be 
reckoned. 
The arrangement on plates 5 to 10 (inclusive) is the same, except that 
the days in the upper line follow one another in regular order without 
any interval and that the counters belonging to the lower line vary. 
The movement here is backward,as before. By this series, counting 
as indicated, we are enabled to determine that the unusual symbol 
(figure +) on plate 6 is that of the day Itzcuintli, and the symbol (figure 
5), same plate, is that for the day Ocelotl. Plate 5 appears to be 
connected backward with plates +, 3, and 2 by the lower series, column 
to the right. The counter in the lower half of plate 5 is 9, and the 
lowest day of the column at the right is Cipactli. Counting nine inter- 
mediate days from this brings us to Ozomatli, the first or lowest day 
of the column in the lower half of plate 4; the counter here is 3, and 
passing over this number of days brings us to Quauhtli, lowest day of 
plate 3; here the counter is 16, which carries us to Malinalli, lowest 
day in plate 2, and eight days more to Cipactli, the commencement. 
This lower series of plates 10 to 2 (inclusive) if to be considered as 
one, embraces one hundred and four days, not an even twenty, but 
exactly eight thirteens. 
The upper series of plates 4 and 3 has five days to each section 
arranged in the same manner as the column in the lower half. The 
counters here are small black dots, 12 to each section. Counting this 
number from Cipactli, the day at the right of the right-hand section 
of plate 4, brings us to Ocelotl, right of left section; twelve more to 
Mazatl, ete. 
The dots or little circles used as counters in this codex are, with 
the exception just named, colored blue, red, green, and yellow, those 
of different colors being found in almost every number. There is no 
tendency shown to arrange by fives, though plates 23 to 40 (inclusive) 
are largely filled with number symbols, short black lines (fives) and 
dots, as in the Mayan writings. So far I have been unable to determine 
the use of these numbers in the connection they are found. 
Vatican codex— Plates 81 to 90 of this codex (Kingsborough, vol. 1m) 
are, as is shown by the numbers and day symbols, to be read as follow: 
The upper line, containing day symbols each followed by the counter 3, 
