U4 MAYAN CALENDAR SYSTEMS (ETH. ANN. 19 
from 10 Ahau 13 Yaxkin brings the reckoning to 5 Lamat 1 Mol, the 
next following date. 
It appears, therefore, from these results that the reckoning so far is 
forward and not backward, as Mr Goodman maintains. 
As the next numeral series (6 in the list given above) has the pre- 
fixed numerals, except the 1 (cycle), given in unusual symbols, and there 
is no recognizable date following within reasonable distance, we will 
turn to Mr Maudslay’s photographs and drawings of the inscription, 
noticing such additional series only as offer sufficient recognizable data 
for examination. We take that following the portion which has been 
examined. This will be found in his photograph, plate 59, vol. 1v. and 
drawing, plate 62, same volume. The numbering and lettering on 
his plate 62 will be followed. While I feel doubtful as to a num- 
ber of the glyphs on the plate of drawings, judging by the’ nearly 
obliterated forms in the photograph, yet, as Maudslay had an oppor- 
tunity of obserying the original and of carefully studying the casts, 
I shall accept the drawings generally, expressing doubt where I deem 
it necessary. 
Attention is called first to the somewhat doubtful glyph O7, denoting 
7 Cimi 19 Ceh. Following this order, the reverse of the usual (P7 to 
Ps), are the counters 9 cycles, 7 katuns, 11 ahaus, 3 chuens, 0 days 
(1,350,420 days); subtracting 71 calendar rounds—1,347,580 days— 
leaves 2,840 days to be counted. As the counters are reversed in order, 
our count will be backward from 7 Cimi 19 Ceh, year 3 Lamat. This 
we find will reach 1 Cimi 19 Pax in the year 8 Lamat, the next date, 
found at O10, P10. As the agreement with the inscription is exact, 
the count appears to be correct. The cycle and ahau symbols here 
are face glyphs. 
The series commencing with the date 7 Caban 15 Pop (Q6, R6) has 
as its counters 1 day, 6 chuens, 7 ahaus, 2 katuns (Q7 to Q§8), equal 
to 17,041 days. As 7 Caban 15 Pop falls in the year 6 Akbal, counting 
forward this number of days we reach 5 Ezanab, the 6th day of Kan- 
kin in the year 13 Ben. This agrees exactly with the inscription, as 
we find 5 Ezanab 6 Kankin farther on at Q11, and the counting in 
this case is forward, as has been found to be the rule of this inserip- 
tion with the one exception noted. Counting forward from the last 
date—5 Ezanab 6 Kankin—¥2 days 11 chuens (R11) and 9 ahaus (Q12), 
or 3,462 days, we reach 9 Ahau, the 18th day of the month Zotz in 
the year 10 Akbal. This is correct, as the latter date is found in the 
double glyph Si. The last chuen symbol (R11) is a face glyph. 
As these are the only series of this inscription presenting data sutli- 
cient for satisfactory computation, I will notice one or two glyphs and 
pass to other inscriptions. At LS and P5 are ahau symbols, which 

appear to take the place of katun symbols, but I am unable to prove 
this by count. In the latter instance there is a date immediately pre- 
