This page presents in brief the subject which is more fully treated of on the front of the second part of the Manuscript (pages 46-60). The first problem it presents is to find periods in which the solar year (365 days) is brought into accord with the apparent Venus year (584 days). This takes place in a term of 2920 days = 8 × 365 = 5 × 584. Sequent to this is the still higher aim of bringing the Tonalamatl (260) into harmony with this period, which is accomplished in 37,960 days (= 146 × 260 = 104 × 365 = 65 × 584). The revolution of the moon (28), the ritual year (364 = 28 × 13) and the apparent revolution of Mercury (115) come in question as secondary matters. I will now give an approximate reproduction of the page:-- Hieroglyphs. 1 17 29 151,840 113,880 75,920 37,960 2 18 30 (4 × 37,960) (3 × 37,960) (2 × 37,960) (13 × 2920) 3 19 31 I Ahau I Ahau I Ahau I Ahau 4 20 32 185,120 68,900 33,280 9100 5 21 33 I Ahau I Ahau I Ahau I Ahau 6 22 34 35,040 32,120 29,200 26,280 7 23 35 (12 × 2920) (11 × 2920) (10 × 2920) (9 × 2920) 8 24 36 VI Ahau XI Ahau III Ahau VIII Ahau 9 25 37 23,360 20,440 17,520 14,600 10 26 38 (8 × 2920) (7 × 2920) (6 × 2920) (5 × 2920) 11 27 39 XIII Ahau V Ahau X Ahau II Ahau 12 28 40 13 11,680 8,760 5,840 2920 14 (4 × 2920) (3 × 2920) (2 × 2920) VII Ahau XII Ahau IV Ahau IX Ahau 15 16 2,200 1,366,560 1,364,360 IV Ahau I Ahau I Ahau 8 Cumhu 18 Kayab 18 Zip. First let me observe that I have restored the four large numbers at the top, which are almost entirely effaced, as follows:-- 1 15 10 5 1 16 10 5 1 6 16 8 14 0 0 0. 0 And furthermore, at the right, bottom, I have substituted the third month for the second of the Manuscript, which proceeding will be justified later on. The least difficult portion of the contents of this page is the first series consisting of 16 members, each being a multiple of 2920. It begins with the date I Ahau (which is always concealed in these series), regularly stops at the month day Ahau (since 2920 = 146 × 20), but necessarily advances in the week days by 8 days each (since 2920 = 224 × 13 + 8), until 37,960 is reached, when the day I Ahau again appears (since 37,960 = 146 × 260). According to my method of filling in the numbers, the top row of the page consists only of multiples of 37,960.