THOMAS.] SERIES ON PLATES 65 TO 73. 331 



tlie liiie.s of numerals running through Plates 65-69 could be connected, 

 ])ut the fact that the sum of the black numbers in each is 91, precisely 

 the interval Ijetween the corresponding days of the columns in Plates 

 63 and 6-4, will probably warrant the conclusion that they are con- 

 nected with them. This conclusion is strengthened, so far as those 

 in the lower division are concerned, by the fact that by taking the 

 XIII attaclied to the lowest days of the columns the numbers prop- 

 erly succeed one another and the series conforms to the rule heretofore 

 given. As proof of this I give here the lower line of the lower divis- 

 ion, prefixing the XIII, thus: XIII; 9, IX; 5, I; 1, II; 10, XII; 6, V; 

 3. VII; 11, V; 7, XII; 3, II; 12, I; 8, IX; 4, XIII; 13, XIII. 



Adding together the numbers and casting out the thirteens, thus, 

 XIIH-9-13=:IX; IX-f 5-13=1, &c., the connection is seen to be 

 regular. The final red numeral is XIII, the same as that with which 

 the series begins, and the sum of the black numbers, 9, 5, 1, 10, 6, 

 2. 11, 7. 3. 13, 8, 4, 13, is 91, a multiple of 13. The middle line of 

 numerals also connects with the XIII attached to the bottom sym- 

 bols of the day columns; and the upper line of numerals connects 

 with the III attached to the top symbols of the day columns. 



Plates 70 to 73 present some peculiarities difficult to account for. 

 That these pages belong to the same type as 63, 63, and 64 cannot be 

 doubted, and that as a general rule they are to be read from right to 

 left is easily proved; but this method does not seem to be adopted 

 throughoiit, the order being apparently reversed in a single series. 



The aboriginal artist has apparently made up these pages from 

 two older manuscripts or changed and added to his original. The 

 last two columns of Plate 70 and first five of 71 appear to have been 

 thrust in here as an afterthought or as a fragment from some other 

 source, forming aj^parently no legitimate connection with the series 

 to either the right or to the left of them. It is true, as will be shown, 

 that there is some connection with the lowest series on the right, but 

 it would seem that advantage was here taken of accidental corre- 

 spondence rather than that this correspondence was the result of a 

 preconceived plan. 



Commencing in the lower part of the middle division of Plate 73 and 

 running back (to the left) to the sixth column of 71 and returning to 

 the lower part of the lower division of 73 and ending with the sixth 

 column of 71, is the following series. The columns are given in the 

 order in which thej' stand on the resiiectivc plates, but tlie plates are 

 taken in reverse order: 



