530 BUREAU OF AMERICAN ETHNOLOGY [bull. 28 



51 days distant from the first; from the end of each roAv to the 

 beginning of tlie following one, therefore from the end of the last 

 to the beginning of the first as well, there are 14 days ; thns, 260=4 

 (51+14). 



2. In the Troano codex, pages 33c to 32c, is another example. Four 

 days standing in a vertical row are repeated four times, with a dis- 

 tance of 20 daj'S between each row ; that is, 3X20—60. From the last 

 day of every column to the first of the next, therefore from the end 

 of the last to the beginning of the first, there are 5 daj^s; thus, 

 4X5=20. Consequently, 200=4 (5+3X20). 



We should try to approach the secrets which lie concealed here from 

 every side. Unfortunately, we have not j^et passed the tentative 

 stage. There is lack of Avorkers in this comparatively new field, in 

 which scarcely a dozen men are seriously laboring, and in which conse- 

 quently each individual may hope for a comparatively rich harvest. 



If we next inquire whether it is the subject of the particular part of 

 the manuscript which influenced the choice of one or the other of the 

 three kinds of tonalamatls, the answer is entirely in the negative. 

 Thus all three kinds occur indiscriminately in the portion of the 

 Dresden codex pertaining to women (pages 13 to 23)., They appear 

 in the same way in the other manuscript, in the section relating to 

 household economy and agricidture (Codex Cortesianus, page 19; 

 Troano codex, page 24*), in that relating to bee culture (Troano 

 codex, pages 9* to 1*), and, finally, in that relating to the chase 

 (Troano codex, images 19 to 8), although it is a striking fact that in 

 this latter passage in one instance (Troano codex, pages 12b to 9c) 

 six of the unusual tonalamatls of ten parts follow each other in close 

 succession. 



If the question is put whether we have gained clearei- views from 

 the division of these periods of 05, 52, and 2G days, we must deny 

 this also; still we must, notwithstanding this, continue to study them, 

 for they may yet jierhaps lead to new conclusions. It is note- 

 worthy that there are in the Dresden codex 13 and in Codex Troano- 

 Cortesianus at least 44 cases (in both instances from a sixth to a fifth 

 of the entire number) in which the single parts consist only of periods 

 of 13 or of 26 or of 39 days, that is, of undivided weeks. There are 

 some very similar cases in Codex Troano-Cortesianus (not found in 

 the Dresden codex) in which each week is divided into two unequal 

 parts. Thus the 26 in the Troano codex, pages 9*c to 8*c, is divided 

 into 2 (7+6), the 52 in Codex Cortesianus, page 19a, into 4 (7+6), 

 and page 30a into 4 (8+5), the 65 in the Troano codex, page 33*b, 

 into 5 (8+5), and vice versa, page 3*b, into 5 (5+8). The j^eriod of 

 two weeks is even divided in Codex Cortesianus, page 28b, into 18+8, 

 in order to form a period of 52 days. 



