300 AIDS TO THE STUDY OF THE MAYA CODICES. 



Years. Months. Days. 



8 8 Under VII Lamat, Plate 49. 



8 



8 16 Under II Cib, Plate 49. 



11 16 



3 13 Under IV Eb, Plate 50. 



4 10 



7 3 Under III Ik, Plate 50. 



13 10 



1 13 Under VI Eb, Plate 50. 



8 2 Under I Ahau, Plate 50. 



The proof of the correctness of the theory advanced may, therefore, 

 be considered conclusive, as it amounts, in fact, to a mathematical 

 demonstration. 



Dr. Forstemann, who considers these lines of black numbers, stand- 

 ing one above another, as representing different grades of units — 

 thus, the lowest, single units; the second, units twenty -fold the lower; 

 the third, eighteen-fold the second; the fourth, twenty-fold the third, 

 &c. — has found the correct intervals of the series, which he states are 

 23G, 90, 250, and 8 days, agreeing with our 11 months, 16 days; 4 

 months, 10 days; 13 months, 10 days, and 8 days. 



As all the discoveries mentioned herein were made previous to the 

 receipt of Dr. Forstemann's work, I give them according to my own 

 method, acknowledging any modification due to his work. Although 

 I shall compare special results from time to time, an explanation of 



I days in ms., should be 4. 



