The history of the turquoise, a stone which has been mined in Persia for thousands of years, and has long been prized as one of the most beautiful and attractive of the semi-precious stones, has been very fully and ably treated in an exceedingly comprehensive monograph recently published by Dr. Joseph E. Pogue.[622] This valuable and interesting work contains extracts from all the older and more modern writers on the subject, and also describes the stone fully from a mineralogical point of view, besides discussing it from the historic standpoints. So highly was the turquoise esteemed among the Pima Indians of southern Arizona, that the loss of one was looked upon as a most ominous event, portending for the owner a serious illness or physical disability, which could only be cured by the magic rites of a medicine-man. When one of those worthies is called in to avert the impending misfortune, his favorite remedy consists in placing a piece of slate, a turquoise and a crystal in a vessel filled with water, the liquid being administered in regular doses to the threatened victim. The threefold remedy, comprising a specimen of the lost stone, is supposed to outweigh and counteract the probable evil influences of the lost turquoise alone.[623] The magic power that dwelt in these Indian fetishes was named _oyaron_ in the Iroquoian tongue, and each person or kindred was believed to have a special _oyaron_ which exerted a controlling power over their good or evil fortune. The material object in which this entity would take up its abode was determined in a peculiar way. When a youth had attained maturity, he was entrusted to the charge of an old man who took him to a far-away lodge in the wilderness. Here he had his face, shoulders and breast blackened to symbolize his lack of spiritual or occult enlightenment. He was then compelled to fast for a considerable time and was instructed to carefully note his dreams, and if he should have an exceptionally vivid dream regarding any specific object, to tell his guardian of it. The fact was then duly reported to the wise men of the tribe, who decided whether the object was the chosen abiding place of his _oyaron_. This having been satisfactorily determined, an object of the kind was sought out and was preserved and treasured by the one to whom it had been assigned in the vision. Perhaps the familiar spirit might have elected to dwell in a calumet, a pipe or a knife, or else in some animal, plant, or mineral form.[624] [Illustration: INDIAN MEDICINE-MAN From “Histoire Générale des Cérémonies Religieuses du tous les Peuples du Monde,” by Abbé Banier and Abbé Mascrier, Paris, 1741. ]