The Indians here under consideration occupy an intermediate position between the civilized Maya of northern Yucatan, who have lost nearly all tradition and traces of their former civilization, and the Lacandones of the Usumasintla Valley, who have probably changed but little in their customs and religious observances since the conquest. Nominally they are Christians, but the longer one lives among them, and the better one gets to know them, the more he realizes that their Christianity is to a great extent merely a thin veneer, and that fundamentally their religious conceptions and even their ritual and ceremonies are survivals--degenerate, much changed, and with most of their significance lost--but still survivals of those of their ancestors of pre-Columbian days. To Christianity, not as a separate religion, but as a graft on that which they already practiced, they seem to have taken kindly from the first; and at the present day, as will be seen, the sun god, the rain god, St. Laurence, and Santa Clara may all be invoked in the same prayer, while the Cross is substituted in most of the ceremonies for the images of the old gods, though many of the latter are called on by name. The four principal religious ceremonies of the Indians are, as might be supposed, closely associated with agriculture, especially with the corn crop. The first of these ceremonies takes place at the cutting of the bush in which the corn plantation is to be made, the second at the planting of the corn, the third during its ripening, and the fourth at harvest time. Of these the third, known as the _Cha chac_, which takes place during the ripening of the corn, and whose object is to secure sufficient rain for that purpose, is by far the most important, and it alone will be described, as it embraces the offerings and ritual of all the other ceremonies. [Illustration: FIG. 11.--Chichanha Indian priest in front of altar at Cha chac ceremony.]