From the Hall of the Monoliths a dark, stone-covered passage leads into a room called the Audience Chamber. This is a splendid room with its walls in carved mosaics, or a setting of tiles, after the Grecian models. There are four long, narrow rooms, or corridors, on either side of this main chamber without other entrance except the one just mentioned. One of these, the West room, is most beautiful and is nearly perfect, as scarcely a tile is broken or missing from its exquisitely inlaid walls which at first inspection look like stucco work. The tiles are so accurately inlaid that no mortar was used, or needed, to hold them in place. This is the Corridor of the Mosaics. There are also traces of a lustrous, dark, red paint, used on a hard cement plaster. It is quite probable that all the buildings in the five groups were as carefully constructed and as exquisitely ornamented as this one, but they have been destroyed by succeeding races. North of this group was another ruin on the walls of which a Christian church has been built. Most of the materials used in its construction came from this old temple or palace. The sacristy of this church is formed in part of a portion of the old building, and covered with a tile roof. This structure was the largest of all in size, extending over a space nearly three hundred feet long by one hundred feet wide, and with walls from five to six feet in thickness. One room is now used as a stable, and contains some strange hieroglyphics done in a lustrous red paint which have never been deciphered. These are the only semblance to anything like writing, or historical inscriptions, that appear anywhere in the ruins. In the centre of the main court is a hard cement pavement laid out in the form of a square with a cut stone border. This may have been intended for ornament or for human sacrifices. The latter conjecture might not be erroneous, knowing, as we do, the customs of those early Mexican races. There are many other evidences of ruins near Mitla. Clay idols, or images, made of terracotta are found all over the neighbourhood. Children hunt for specimens and bring them to tourists for sale. It is also said that many stone wedges, and copper chisels and axes, have been discovered here but I did not see any of them. [Illustration: A ZAPOTECO WOMAN]