The next stage in the evolution of the knife is shown in Fig. 47. These objects will fall under type 1 B, some being pointed, some with base convex, base straight, sides convex. The workmanship on these is better than that exhibited in Fig. 44. They were all found near Allentown, Pennsylvania, by Mr. Kern. While these two illustrations are of Pennsylvania specimens, they are typical of B, 1, forms whether the specimen came from California, Georgia, or Wisconsin. I shall present in this work specimens from every portion of the United States, but, of course, it would be impossible to show all the type specimens of a given locality. The pointed flint objects without stem are, for the most part, triangular war points. The story of their use is so old, having been printed in many publications, that it is only necessary to state that these are called war points because there is no means of fastening them securely to the arrow, and they became detached from the arrow when the victim attempted to withdraw the shaft. But of these triangular points there are such numbers and so many diversified forms, I have presented a plate of thirty-one of them in Fig. 50, taken from the collection of Phillips Academy Museum. These points are from the following localities:— Top row, from left to right; first three, banks of the Ohio River, Brown County, Ohio; next, Indiana; concave base, Oregon; last two to right, Pottsgrove, Pennsylvania. Second row—First two, Oregon; next two, Natchez, Mississippi, Professor E. H. Williams’s collection; next, Santa Anna, Texas; next two, Bethlehem, Pennsylvania. Third row—White quartz, Georgia and Virginia. [Illustration: FIG. 68. (S. 1–2.) Maine knives, and two spear-heads. Material: block flint, porphyry, quartzite. A. E. Marks’s collection, Yarmouth, Maine. ] Fourth row—Two to the left from Massachusetts; central long one, Illinois; four small ones to right, Willamette Valley, Oregon; three small ones over these, from Natchez, Mississippi, Professor E. H. Williams’s collection. [Illustration: FIG. 69. (S. 2–3.) Lance-head. Material: jasper. Stephen Van Rensselaer’s collection, Newark, New Jersey. ] [Illustration: FIG. 70. (S. 1–2.) Lance-head (?). Dudley A. Martin’s collection, Duboistown, Pennsylvania. ] In Fig. 51 I have shown the projectile points and knives without stems. Some of these are clearly triangular arrow-points, others are knives with flat bases or concave bases. The convex base, except in minute projectile points, is rare. Most knives have straight or concave bases. Some of the implements pointed out have one end straight, and the others are beautiful specimens of aboriginal workmanship. Fig. 58 exhibits a knife of porphyry, half-size, found by A.E. Marks, near Sebago, Maine. This knife is one of similar types found in Maine graves, but is a better specimen than the average. [Illustration: