_Hidatsa and Mandan_--"Many writers represent that savage Indian tribes divide the year into twelve periods corresponding to our months, and that each month is named from some meteorological occurrence or phase of organic creation observable at the time. Among others, Maximilian presents us with a list of twelve months; 'the month of the seven cold days,' 'the pairing month,' 'the month of weak eyes,' etc.; he introduces this list in one of his chapters descriptive of the Mandans. He does not say it is their list of months, but publishes it without comment, and yet it is presented in such a manner as to lead the reader to suppose that it is the regular and original Mandan calendar. Other authors present lists of Indian months in much the same way. As the results of my own observations, I should say that the Mandan and Minnetaree are generally aware that there are more than twelve lunations in a year, that they as yet know nothing of our manner of dividing the year, and that although, when speaking of 'moons,' they often connect them with natural phenomena, they have no formal names for the lunar periods. I think the same might be said of other tribes who are equally wild. "The _Hidatsa_ recognize the lapse of time by days, lunar periods, and years; also by the regular recurrence of various natural phenomena, such as the first formation of ice in the fall, the breaking of the ice in the Missouri in the spring, the melting of the snowdrifts, the coming of the wild geese from the south, the ripening of various fruits, etc. A common way of noting time a few years ago was by the development of the buffalo calf _in utero_. A period thus marked by a natural occurrence, be it long or short, is called by them the _kadu_, season, time, of such an occurrence. Some long seasons include shorter seasons; thus they speak of the season of strawberries, the season of service-berries, etc., as occurring within the season of warm weather. They speak of the seasons of cold weather or of snow, of warm weather, and of death or decay, which we consider as agreeing with our seasons of winter, summer, and fall; but they do not regularly allot a certain number of moons to each of these seasons. Should you ask an interpreter who knew the European calendar what were the Indian names of the months, he would probably give you names of a dozen of these periods or natural seasons, as we might call them, corresponding in time to our months. In a few years, when these Indians shall know more of our system of noting time than they now do, they will devise and adopt regular Hidatsa names for the months of our calendar" (_Matthews, 4_).