(Prescription.)--Lay a terrapin shell upon (the spot) and keep it there while the five kinds (of spirits) listen. On finishing, then blow once. Repeat four times, beginning each time from the start. On finishing the fourth time, then blow four times. Have two white beads lying in the shell, together with a little of the medicine. Don’t interfere with it, but have a good deal boiling in another vessel--a bowl will do very well--and rub it on warm while treating by applying the hands. And this is the medicine: What is called Yâ´na-Utsĕ´sta (“bear’s bed,” the Aspidium acrostichoides or Christmas fern); and the other is called Kâ´ga-Asgû´[n]tagĭ (“crow’s shin,” the Adianthum pedatum or Maidenhair fern); and the other is the common Egû´[n]lĭ (another fern); and the other is the Little Soft (-leaved) Egû´[n]lĭ (Osmunda Cinnamonea or cinnamon fern), which grows in the rocks and resembles Yâna-Utsĕ´sta and is a small and soft (-leaved) Egû´[n]lĭ. Another has brown roots and another has black roots. The roots of all should be (used). Begin doctoring early in the morning; let the second (application) be while the sun is still near the horizon; the third when it has risen to a considerable height (10 a.m.); the fourth when it is above at noon. This is sufficient. (The doctor) must not eat, and the patient also must be fasting. [Footnote 10: _Ada´wĕhĭ_ is a word used to designate one supposed to have supernatural powers, and is applied alike to human beings and to the spirits invoked in the formulas. Some of the mythic heroes famous for their magic deeds are spoken of as _ada´wĕhĭ_ (plural _anida´wĕhĭ_ or _anida´we_), but in its application to mortals the term is used only of the very greatest shamans. None of those now belonging to the band are considered worthy of being thus called, although the term was sometimes applied to one, Usawĭ, who died some years ago. In speaking of himself as an ada´wĕhĭ, as occurs in some of the formulas, the shaman arrogates to himself the same powers that belong to the gods. Our nearest equivalent is the word magician, but this falls far short of the idea conveyed by the Cherokee word. In the bible translation the word is used as the equivalent of angel or spirit.] _Explanation._ As this formula is taken from the manuscript of Gahuni, who died nearly thirty years ago, no definite statement of the theory of the disease, or its treatment, can be given, beyond what is contained in the formula itself, which, fortunately, is particularly explicit; most doctors contenting themselves with giving only the words of the prayer, without noting the ceremonies or even the medicine used. There are various theories as to the cause of each disease, the most common idea in regard to rheumatism being that it is caused by the spirits of the slain animals, generally the deer, thirsting for vengeance on the hunter, as has been already explained in the myth of the origin of disease and medicine.