Among spear- and arrow-points especially, there appears to be a gradual development from the primitive leaf-shaped, through the stemmed, to the numerous and well-executed socketed forms. In this case the important element in the transition from one form to another is in the manner of hafting. A gradual transition in some instances from well-marked types of one class into those of another may also be noted. The uses of many of these implements, because of their close resemblance to modern articles, are readily understood. The precise function of others is not so readily ascertained. An examination of a large series of any of these should convince us that each had its special function, although probably also employed for such other exigencies as might arise. In the following pages the various classes of local copper implements and ornaments are described and such information and suggestions concerning their workmanship, purposes, frequency, and distribution given as is now obtainable. _Axes_ Large numbers of these implements have been recovered from Wisconsin soil and are to-day represented by one or several examples in nearly every local copper collection. They vary in weight from half a pound to three pounds, rarely more, and in size from three to ten inches. So far as is known no hafted copper axe has yet been recovered. Probably the usual and most satisfactory method of hafting one of these implements was to insert it between the parts of a cleft stick, to which it was afterwards secured by winding the stick above and below it with strips of hide, a number of turns being also taken around or across it. There are at least three well-established types of these implements, which may be briefly described as follows:— [Illustration: FIG. 586. (S. 2–3.) Copper axe, Washington County, Wisconsin. Copper chisel, near Charleston, Calumet County, Wisconsin. ] 1. Those which are oblong or nearly oblong in outline, having the edges parallel or nearly so, and whose breadth is such as to exclude them from the class of implements known as chisels. Specimens range from less than four up to seven or more inches in length. They are generally of nearly uniform thickness throughout. (See Figs. 576, 578.) A variety of the above type has the margin at the edges slightly elevated, thus giving a depressed or concave surface in the centre, and from end to end, on one or both broad faces of the axe. In some examples this margin is fully one half inch in width at or near the middle of the axe. A curious feature of some examples of this uncommon form is the concave cutting edge. Such implements are to be seen in a number of the larger public and private collections in Wisconsin. So far as can be ascertained no examples of these curious axes have been obtained in surrounding states, where the normal form also occurs.