Although the sweat lodge was not unique to the Mandan tribe, it is George Catlin's observation of their sweating ceremony that forms the basis of this week's article. I have chosen to focus on the Manadan only because of the detail with which Catlin described their ritual. However, as I have noted, the sweat lodge is found throughout the continent (with the exception of the Southwestern and Inuit tribes) and remains an important part of indigenous medicinal practices.