The mode of swimming amongst the Mandans, as well as amongst most of the other tribes, is quite different from that practiced in those parts of the civilized world, which I have had the pleasure yet to visit. The Indian, instead of parting his hands simultaneously under the chin, and making the stroke outward, in a horizontal direction, causing thereby a serious strain upon the chest, throws his body alternately upon the left and the right side, raising one arm entirely above the water and reaching as far forward as he can, to dip it, whilst his whole weight and force are spent upon the one that is passing under him, and like a paddle propelling him along; whilst this arm is making a half circle, and is being raised out of the water behind him, the opposite arm is describing a similar arch in the air over his head, to be dipped in the water as far as he can reach before him, with the hand turned under, forming a sort of bucket, to act most effectively as it passes in its turn underneath him. By this bold and powerful mode of swimming, which may want the grace that many would wish to see, I am quite sure, from the experience I have had, that much of the fatigue and strain upon the breast and spine are avoided, and that a man will preserve his strength and his breath much longer in this alternate and rolling motion, than he can in the usual mode of swimming, in the polished world. In addition to the modes of bathing which I have above described, the Mandans have another, which is a much greater luxury, and often resorted to by the sick, but far more often by the well and sound, as a matter of luxury only, or perhaps for the purpose of hardening their limbs and preparing them for the thousand exposures and vicissitudes of life to which they are continually liable. I allude to their vapour baths, or _sudatories_, of which each village has several, and which seem to be a kind of public property—accessible to all, and resorted to by all, male and female, old and young, sick and well. In every Mandan lodge is to be seen a crib or basket, much in the shape of a bathing-tub, curiously woven with willow boughs, and sufficiently large to receive any person of the family in a reclining or recumbent posture; which, when any one is to take a bath, is carried by the squaw to the sudatory for the purpose, and brought back to the wigwam again after it has been used.