This remarkable agreement between the 178-day groups in the Dresden and the occurrences of eclipses may have several meanings. (1) One possibility, and one which should always be kept in mind, is that this agreement is simply another coincidence, of which there are always many in chronological work. (2) It may be that the numbers refer to dates of prophesied eclipses which the Mayas had learned occurred at more or less regular intervals. (3) Since this table has a place in the calendar of the Mayas (for a date probably occurs on page 52a), it may be that these numbers refer to definite historical eclipses. If they do, they will afford a means by which an absolute correlation between the Maya and the Julian calendars may be obtained. Professor Willson is at present working on this problem. TABLE V SOLAR ECLIPSES Group Eclipse Month / 1034 35 1 | 1211 41 | 1388 47 \ 1565 53 / 2422 82 2 | 2599 88 | 2776 94 \ 2953 100 / 3632 123 3 | 3809 129 | 3987 135 \ 4164 141 / 5020 170 4 | 5197 176 | 5375 182 \ 5552 188 / 6408 217 5 | 6585 223 \ 6762 229 / 7619 258 6 | 7796 264 | 7973 270 \ 8150 276 / 9007 305 7 | 9184 311 | 9361 317 \ 9538 323 / 10395 352 8 | 10572 358 \ 10750 364 / 11606 393 9 | 11783 399 \ 11960 405 TABLE VI LUNAR ECLIPSES Group Eclipse Month / 502 17 1 | 679 23 \ 856 29 / 1713 58 2 | 1890 64 | 2067 70 \ 2244 76 / 3101 105 3 | 3278 111 \ 3455 117 / 4311 146 4 | 4489 152 | 4666 158 \ 4843 164 / 5699 193 5 | 5877 199 | 6054 205 \ 6231 211 / 7087 240 6 | 7264 246 \ 7442 252 / 8298 281 7 | 8475 287 | 8652 293 \ 8830 299 / 9686 328 8 | 9863 334 \ 10040 340 / 10896 369 9 | 11074 375 | 11251 381 \ 11428 387 TABLE VII 178-DAY GROUPS Number Month 1034 35 2422 82 5020 170 6408 217 9006 305 10394 352 In order to determine the exact extent to which the eclipse seasons affect these pages in the Dresden Codex it is necessary to work out in as great detail as possible the calendar represented.