“Owing to the time and toil required to carefully examine the great number of both public and private collections now existing and being developed in Wisconsin, studies of the distribution of the numerous local forms of flint implements have but been begun. It is, however, possible to venture a few general statements concerning them. Thus certain forms of arrow- and spear-points are found commonly in most districts of the state, some are of much more common occurrence in certain areas than in others, some appear to be limited in their distribution to only certain restricted areas, and others are of infrequent or rare occurrence everywhere. About Aztalan, in Jefferson County, and in the region of the Madison lakes, there are obtained specimens of a small notched triangular point which is also occasionally provided with a deeply notched base. But very few examples of these delicate and beautiful flint implements appear to have been found elsewhere. In the latter region is found a small barbed point of choice workmanship, with truncated barbs, and frequently with serrated edges. It is wholly unknown or of very rare occurrence in most parts of Wisconsin. Blue hornstone knives of the peculiar diamond shape have been found sparingly by single examples or in caches, in many localities in southern Wisconsin. “A lack of space forbids the description of other forms of unusual interest. In the Logan Museum, Milwaukee Public Museum, State Historical Museum, the H. P. Hamilton, J. P. Schumacher, and several other collections are to be seen specimens of a rare and beautiful form of large flint ceremonial knife, which appears not yet to have been described from other states. These implements are somewhat elliptical in form, with a narrow square or slightly rounded base. All are finely chipped of selected material, and are graceful and beautiful implements. They range from nine to thirteen and a half inches in length and from three to three and a half inches in width across the widest portion of their blades. Most of the specimens, whose history it has been possible to fully trace, have accompanied burials in graves, in some instances associated with other implements.” Illinois and Missouri were favorite camping- and hunting-grounds of prehistoric man (see Figs. 54, 57, 181), and chipped implements are as numerous in Illinois as in any state in the Union. The material is yellow chert, white flint, nodular flint; hoes and spades abound. Many flint celts occur and the flint art is high. Illinois and eastern Missouri and northeastern Arkansas types are characterized by light colors, broad thin blades, etc.