THE SUPPLEMENTARY SERIES. 563 
Glyph (——_—) X is a pair of crossed human legs without the upper part of the 
body tier ] (see figure 79, c’—e’). In most cases these are combined 
with = SE ~+the moon-sign (figure 79, c’ and d’), but in a few cases with 
heads (figure 79, e’) or other forms. This pair of legs occurs in 11 out of the 61 
cases where Glyph X is recognizable, or 18 per cent. 
The next commonest form of Glyph X is the head of God C, sometimes found 
with a coefficient of 0 (figure 79, f’), sometimes with a coefficient of 1 (figure 79, g’), 
sometimes with a coefficient of 3 (figure 79, h’), and sometimes with no coefficient 
at all. More rarely still we find other grotesque heads with coefficients of o (figure 
79, 1’) and sometimes scattering geometric forms such as figure 79, 7’. 
The presence of the moon-sign not infrequently might indicate that Glyph X 
declared the accompanying phase of the moon in each Supplementary Series, a not 
unlikely part of the record in any lunar count. Or again, it may denote special 
planets or configurations which were prominent at the time of the accompanying 
Initial Series date; but here again we are as yet in the dark. 
Enough has been determined about the Supplementary Series, however, to 
establish beyond all doubt that it is primarily a lunar count, and probably that it 
represents an attempt to arrange groups of complete lunar revolutions so as to coin- 
cide with possible recurrences of some eclipse phenomenon, either solar or lunar, 
and possibly even of both. 
In collaboration with R. K. Morley and Guthe, the writer has formulated the 
following points which it appears safe to accept as more or less surely established 
in regard to this count: 
1. The Supplementary Series is a lunar count. 
2. It appears to be an attempt to arrange a series of 29 and 30 day months, so as to 
make the diurnal calendar (7. ¢., the Long Count) measure the actual lunations without the 
resulting remainders reaching a whole day in any case. 
3. Glyph C appears to show some further arrangement, probably of the months 
expressed by Glyph A, denoted by coefficients of from 1 to 6, inclusive. 
4. The Dresden Codex, (pp. 51-58) shows a lunar count of 29 and 30 day months 
arranged in groups of 6 months of 177 days each, or more rarely of 178 days each, and 
occasionally groups of 5 months of 148 days each. 
5. It seems reasonable to infer from points 1 to 4 that the Supplementary Series in 
the inscriptions and pages 51 to 58 of the Dresden Codex treat not only of the same subject, 
but also are constructed according to the same general plan. 
6. This peculiar 6-5 grouping of the 29 and 30 day months is probably caused by the 
attempt to record or predict solar or lunar eclipses, or possibly even both. (See Meinshau- 
sen, 1913.) 
7. The arrangement used in the Dresden Codex appears to have been followed, possi- 
bly with minor variations, in the inscriptions as well. Although all attempts to fit the 
former to the latter unchanged have failed, it seems necessary to believe that the same 
general scheme prevailed in both, because of the internal evidence supplied by the Supple- 
mentary Series themselves. neers ea 
8. Finally, in attempting to ascertain the system used in the inscriptions, the most 
promising line of investigation appears to be to try first to discover the system followed in 
any one city (Quirigua and Piedras Negras, because of the regularity of the hotun-markers, 
are the best adapted for this purpose) from the internal evidence of its own inscriptions 
alone, since it is already apparent that the Supplementary Series are by no means con- 
structed according to the same universal system as are the Initial Series. That such 
should be true should not be wondered at, when it is considered that it is a valiant attempt 
to correlate two incommensurable time periods, and further, that the method of correlation 
may have been influenced by the eclipses visible at any one point. 
