Following the above rules, the student will have no difficulty in working out the beginning days of the remaining divisions and subdivisions of this tonalamatl. These are given below, though the student is urged to work them out independently, using the following outline simply as a check on his work. Adding the last black number, 13, to the beginning day of the last subdivision of the last division, 13 Eznab, will bring the count back to the day 13 Chuen with which the tonalamatl began:


 1st Division 2d Division 3d Division 4th Division
1st part, 26 days,
beginning with day		 13 Chuen 13 Cib 13 Imix 13 Cimi
2d part, 26 days,
beginning with day 		13 Caban 13 Ik 13 Manik 13 Eb
3d part, 13 days,
beginning with day 		13 Akbal 13 Lamat 13 Ben 13 Eznab
Total number of days 65 65 65 65

Next tonalamatl: 1st division, 1st part, 26 days, beginning with the day 13 Chuen, etc.

Applying the test rule to this tonalamatl (see rule 4, p. [253]), we have: 26 + 26 + 13 = 65, the sum of the black numbers, and 4 the number of the day signs in the column of day signs,[[246]] 65 × 4 = 260, the exact number of days in a tonalamatl.

The next tonalamatl (see the upper part of pl. [27], that is, Dresden 12a) occupies only the latter two-thirds of the upper division, the black 12 and red 11 being the last black and red numbers, respectively, of another tonalamatl.

The presence of 10 day signs arranged in two parallel columns of five each would seem at first to indicate that this is a tonalamatl of 10 divisions, but it develops from the calculations that instead there are recorded here two tonalamatls of five divisions each, the first column of day signs designating one tonalamatl and the second another quite distinct therefrom.

The first red numeral is somewhat effaced, indeed all the red has disappeared and only the black outline of the glyph remains. Its position, however, above the column of day signs, seems to indicate its color and use, and we are reasonably safe in stating that the first of the two tonalamatls here recorded began with the day 8 Ahau. Adding to this the first black number, 27, the beginning day of the next subdivision will be found to be 9 Manik, neither the coefficient nor day sign of which appears in the text. Assuming that the calculation is correct, however, and adding the next black number, 25 (also out of place), to this day, 9 Manik, the beginning day of the next part will be 8 Eb. But since 25 is the last black number, 8 Eb will be the beginning day of the next main division and should appear as the second sign in the first column of day signs. Comparison of this form with figure [17], r, will show that Eb is recorded in this place.

In this manner all of the beginning days could be worked out as below:


 1st Division 2d Division 3d Division 4th Division 5th Division
1st part, 27 days,
beginning with day		 8 Ahau 8 Eb 8 Kan 8 Cib 8 Lamat
2d part, 25 days,
beginning with day 		9 Manik 9 Cauac 9 Chuen 9 Akbal 9 Men
Total number of days 52 52 52 52 52