Being strongly opposed by the missionaries because it was utterly misunderstood[836], and finding no favour in official circles, the Sun dance has been for many years an object of persecution, and in consequence is extinct among the Dakota, Crows, Mandan, Pawnee, and Kiowa, but it is still performed by the Cree, Siksika (Blackfoot), Arapaho, Cheyenne, Assiniboin, Ponca, Shoshoni and Ute, though in many of these tribes its disappearance is near at hand, for it has lost part of its rites and has become largely a spectacle for gain rather than a great religious ceremony[837]. The Pawnee do not differ at all widely from the Dakota, but have a somewhat finer cast of features. They are more given to agriculture, raising crops of maize, pumpkins, etc. The Pawnee type of hut is characteristic, consisting of a circular framework of poles or logs, covered with brush, bark and earth. Their religious ceremonies were connected with the cosmic forces and the heavenly bodies. The dominating power was Tirawa generally spoken of as "Father." The winds, thunder, lightning and rain were his messengers. Among the Skidi the morning and evening stars represented the masculine and feminine elements, and were connected with the advent and perpetuation on earth of all living forms. A series of ceremonies relative to the bringing of life and its increase began with the first thunder in the spring and culminated at the summer solstice in human sacrifice, but the series did not close until the maize, called "mother corn," was harvested. At every stage of the series certain shrines or "bundles" became the centre of a ceremony. Each shrine was in charge of an hereditary keeper, but its rituals and ceremonies were in the keeping of a priesthood open to all proper aspirants. Through the sacred and symbolic articles of the shrines and their rituals and ceremonies a medium of communication was believed to be opened between the people and the supernatural powers, by which food, long life and prosperity were obtained. The mythology of the Pawnee is remarkably rich in symbolism and poetic fancy and their religious system is elaborate and cogent. The secret societies, of which there were several in each tribe, were connected with the belief in supernatural animals. The functions of these societies were to call the game, to heal diseases, and to give occult powers. Their rites were elaborate and their ceremonies dramatic[838].