The explorers took up their quarters for the winter amongst the Mandans, on the 1st of November. They built huts, as comfortable as possible with the materials at their command; and in spite of the extreme cold, gave themselves up to the pleasures of hunting, which soon became a positive necessity of their existence. When the ice should break up on the Missouri, the explorers hoped to continue their voyage; but on their sending the boat down to St. Louis, laden with the skins and furs already obtained, only thirty men were found willing to carry the expedition through to the end. The travellers soon passed the mouth of the Yellowstone River, with a current nearly as strong as that of the Missouri, flowing through districts abounding in game. Cruel was their perplexity when they arrived