Continuing down the Missouri to Fort Clark they passed women in their "round leather boats," and saw others, "proceeding towards the river, with their boats hanging on their heads and down their backs." An example of a "bull-boat" and paddle is shown in plate 35, _b_. It was collected among the Hidatsa and is now preserved in the collection of the National Museum. It is a specimen of great interest and rarity, though once so extensively used by the tribes of the Missouri Valley. Several boats of this sort are shown by Bodmer in his picture of the Mandan village (pl. 39), and Kurz likewise left many drawings of these peculiar craft (pl. 45, _c_). In addition to the several forms of structures already mentioned, the Hidatsa evidently erected a very secure temporary lodge when away from their villages on hunting trips. On November 7, 1833, when descending the Missouri, and just before arriving at Fort Clark, Maximilian wrote: "Our breakfast was prepared at nine o'clock, when we lay to on the north bank, in a narrow strip of forest, where we found some old Indian hunting lodges, built, in a conical form, of dry timber. They had, doubtless, been left by the Manitaries, who had come thus far on their hunting excursions. The lower part of the huts, or lodges, was covered with the bark of trees; the entrance was square, and bones were scattered in all directions. We proceeded with a bleak, high wind, saw the singular clay tops of the hills, and, in the forest, the stages made of poles, where the Indian hunters dry the flesh of the animals they have taken in the chase. About twelve o'clock we came to the spot where some stakes indicated the former site of a Mandan village.... We are now in the centre of the territory of the Manitaries." (Maximilian, (1), pp. 314-315.) Probably the danger of attack by their enemies made necessary the erection of these comparatively secure shelters.