Thus, to take examples, the Creek and kindred Indians of the United States compelled women at menstruation to live in separate huts at some distance from the village. There the women had to stay, at the risk of being surprised and cut off by enemies. It was thought "a most horrid and dangerous pollution" to go near the women at such times; and the danger extended to enemies who, if they slew the women, had to cleanse themselves from the pollution by means of certain sacred herbs and roots.[225] Similarly, the Choctaw women had to quit their huts during their monthly periods, and might not return till after they had been purified. While their uncleanness lasted they had to prepare their own food. The men believed that if they were to approach a menstruous woman, they would fall ill, and that some mishap would overtake them when they went to the wars.[226] When an Omaha woman has her courses on her, she retires from the family to a little shelter of bark or grass, supported by sticks, where she kindles a fire and cooks her victuals alone. Her seclusion lasts four days. During this time she may not approach or touch a horse, for the Indians believe that such contamination would impoverish or weaken the animal.[227] Among the Potawatomis the women at their monthly periods "are not allowed to associate with the rest of the nation; they are completely laid aside, and are not permitted to touch any article of furniture or food which the men have occasion to use. If the Indians be stationary at the time, the women are placed outside of the camp; if on a march, they are not allowed to follow the trail, but must take a different path and keep at a distance from the main body."[228] Among the Cheyennes menstruous women slept in special lodges; the men believed that if they slept with their wives at such times, they would probably be wounded in their next battle. A man who owned a shield had very particularly to be on his guard against women in their courses. He might not go into a lodge where one of them happened to be, nor even into a lodge where one of them had been, until a ceremony of purification had been performed. Sweet grass and juniper were burnt in the tent, and the pegs were pulled up and the covering thrown back, as if the tent were about to be struck. After this pretence of decamping from the polluted spot the owner of the shield might enter the tent.[229] [Dread and seclusion of menstruous women among the Indians of British Columbia.]