+458+. There is little evidence for totemic food restrictions in North America. The custom of apologizing to an animal on killing it, frequent elsewhere, is reported as existing among the Algonkin Ottawas and Menomini; but this is not necessarily totemic. The more advanced tribes of the East and South (Algonkin, Iroquois, Creeks, Choctaws, Chickasas, Cherokees, Natchez), the peoples of the Pacific Coast, and the agricultural tribes of the middle of the continent (Pueblos, Mandans, and others) appear to be free from restrictions as to eating. The Navahos are said to refrain from the flesh of fish, turkeys, swine, and bears, but the grounds of the interdiction are not clear.[812] The distinctest evidence of totemistic clan food-taboos are found among the Siouan Caddos (of the southern Mississippi Valley) and the Omahas (of the Middle West). Both these groups are in part agricultural, and it does not appear how they have come to differ from their neighbors in this regard. Food restrictions are reported for the Northwest region.[813] +459+. There is no clear report of totemic food restrictions in Central America or in South America;[814] but these regions have as yet not been thoroughly examined for clan usages. +460+. (e) _Magical ceremonies for increasing the supply of food._ Such ceremonies exist, or have existed, in many regions and among peoples of various grades of culture, civilized as well as savage, but the cases in which they are, or were, conducted by totemistic clans are comparatively few. This sort of economic function of the totem clan is most definite and important in Central and parts of Southeast Australia, where every clan is charged with the duty of increasing the supply of its totem for the benefit of its connected clans; and magical rites are performed in the fertile coast region no less than in the arid region about Lake Eyre--that is, in these cases the employment of magic seems not to be conditioned on the natural resources of the land. Similar totemic clan functions appear in the islands of Torres Straits, the Turtle and Dugong clans performing ceremonies to increase the supply of turtles and to attract dugongs. Magical control of totems for the benefit of the whole community is reported to be found in the Siouan Omaha clans (in the center of the North American continent). The tribes just mentioned are those in which the social organization is definitely totemistic.