3
Prescott, vol. 1, p. 35.
4
Prescott, vol. 1, p. 39, and compare Lorenzana's edition of Cortéz's letters.
5
See Ethnological Trans. 1 vol., p. 96, and Am. Journal of Science and Arts, second series, vol. vii., p. 155. March No. for 1849.
6
See Trans. Amer. Ethnol. Soc'y., vol. 1, p. 94. We should remark that the letters Q. Q., X. Z., P. P., S. Y., on the edge of the stone, denote holes cut into it, in which it is asserted that gnomons were placed whose shadows on the calendar converted it into a dial.