[Illustration: FIG. 108. (S. 1–2.) Rotary spear-head. S. Van Rensselaer’s collection, Newark, New Jersey. ] [Illustration: FIG. 109. (S. 2–3.) Arrow-head, with stem unusually long. Phillips Academy collection. ] [Illustration: FIG. 110. (S. 3–4.) This Figure represents twenty-nine chipped objects from the Willamette Valley, Oregon. Many beautiful specimens have been found in this valley. It has produced possibly as many objects as any given area in the world. Material: the usual semi-precious stones. A careful study of these and other pictures of Willamette Valley types will acquaint readers with the fact that there is an endless variety of form. And yet the treatment is such that the chipped implements from this valley can be recognized and described as differing from others in any part of the world. H. P. Hamilton’s collection, Two Rivers, Wisconsin. ] Fig. 121, Wisconsin types, Fig. 110, Willamette Valley, Oregon, and Fig. 112 should be compared by readers. These plates will emphasize the difference in form. Some of these are classified under “Stems contracting from base,” others belong in the division, “Stems expanding from base.” Yet even in the same class there are to be observed certain differences, for the stem is not always the essential feature. [Illustration: FIG. 111. (S. 1–2.) Points from Idaho. C. Albee’s collection, Red Rock, Montana. Note the angular sides in the object in the upper row, second from the right. ] Fig. 121 represents some of the best specimens from Wisconsin sites. Fig. 126 is from Mr. Reeder’s collection, Michigan, and represents the best type in spear-heads of all kinds from Tennessee and Kentucky and Ohio. The tops of many of these are convex and have been worn smooth either because of the method of fastening, or on account of some particular purpose. This is noticed in a great many of the finer specimens, and leads me to believe it is not hard usage that brings about such a condition, but that specimens were in position for a great length of time, and this polished or smoothed surface is brought about through such means. [Illustration: FIG. 112. (S. 1–3.) A group of Southern types, projectile points, Georgia, South Carolina, North Carolina. It will be observed that in form and material these are easily recognized as being different from those from Northern and Western points. Phillips Academy collection. ] [Illustration: FIG. 113. (S. 1–1.) This is one of the short-stemmed, broad arrows, the result of working a broken specimen. J. P. Smith’s collection, Howard, Rhode Island. ] [Illustration: FIG. 114. (S. 1–1.) Stem contracting from base; double notches; bases concave. These forms are not rare, but occur most frequently in Ohio, Pennsylvania, West Virginia, and Tennessee. H. K. Deisher’s collection, Kutztown, Pennsylvania. ]