INSCRIPTIONS OF THE GREAT PERIOD. 371 
total of 20+10+10=40 glyph-blocks for the in- 
scription. Unfortunately, none of those preserved 
records a date, though a few signs are recognizable, 
as, for example, the top glyph in the last column 
on the back, which is 3 katuns. 
The style of the glyphs is late, though earlier 
than those on Stela 11. It may be that the non- 
calendric glyphs present contain data which will 
enable us to fix the position of this monument in 
the Long Count, but until these shall have been 
deciphered, exact dating is impossible, and nothing 
can be done further than to refer Altar O’ to the 
Great Period. 


















Fic. 52.—Drawing of Altar O’ show- 
ing broken edges at top and bottom. 
TEMPLE 18. 
Provenance: At the southeastern corner of the Acropolis, Main Struc- 
ture, part having fallen into the river. (See plate 6.) 
Date: 9.16.14.16.0 6 Ahau 3 Cumhu (?), or 9.17. 5.0.0 6 Ahau 
13 Kayab (?). 
Text, photograph: plate 24, a. 
References: Gordon, 1896, p. 11. 
Maudslay, 1889-1902, vol. 1 of text, p. 26. 
No details of this temple are given either by Gordon or Maudslay, and 
indeed it is so badly ruined there is little that can be said about it. The 
facade is entirely gone (see fig. 53), although parts of the front doorway 
ee; 
yy WY, Yj Yy 
ty Yyy 
ty 
Y 
4 Vii 
Ys LZ Uj Wd Z 

Fic. 53.—Plan of north (front) gallery of Temple 18. 
and the north and east galleries may still be traced. The western gallery is 
almost entirely destroyed, having fallen to the bottom of the substructure. 
Along the back wall of the front gallery at B, C, D, and E, figure 53, and 
at the ends of the adjoining walls of the east and west galleries, A and F, 
respectively, figure 53, are six large, handsomely sculptured glyphs, set out 
5 or 6 cm. from the planes of these walls. The first to the left at A, in the 
east gallery, is very clearly 6 Ahau, and adjoining it around the corner in 
