The range in form and material, in size and general character, is remarkable. I have said more than once in this book that chipped implements of a given locality exhibit a certain individuality. I repeat this observation purposely because I have heard it stated, by those who should know better, that chipped implements are more or less alike the world over. It would be as accurate for one to say that because leaves grow on trees and serve the same purpose, therefore, all leaves are of the same form. To one who has examined chipped implements in a perfunctory manner they will appear more or less alike, just as to him who is not a botanist, leaves convey no more information than that they are leaves. Yet he who is interested in the technology of flint implements will become proficient after a few years of work, and may distinguish the arrow-points of one section from those of elsewhere. Such a student will observe that there are at least thirty already known and localized types. It is probable that this number will be expanded, as we study localities more carefully. In the following pages I refer to materials of which implements are made and to certain illustrations in my text. If readers will examine the figures cited and compare the variations and form between one part of the country and another, the distribution of these types will be made clear. [Illustration: FIG. 213. (S. 1–3.) From Trigg County, Kentucky, and Stewart County, Tennessee. These adjoining counties are divided by the Cumberland River. B. H. Young’s collection. ] The New Hampshire form of chipped implements is seen in quartz, quartzite, chert, porphyry, slate, and other materials. In quartz, the difference is not great between New England and the South. But there are forms of slate spears or lance-heads found in New England that do not occur elsewhere, whether the same materials are in use or not. Note Figs. 88 and 100 which present typical New England forms. Passing west from New England there is little change in character until one crosses the Hudson, and then we have the Delaware and New Jersey, long slender forms chiefly in jasper, chert, argillite, and a few in quartz. North, in New York and Canada, in the Iroquois country, there is much black chert, some white quartz and jasper, and a multitude of the triangular or war arrow-heads. Illustrations of New Jersey types are in Figs. 64, 90, and 201. About Lake Champlain there was much travel and trade in ancient times, and not only New England but also the western New York forms are present. Types are shown in Fig. 194. In the _American Anthropologist_ for October-December, 1909 (vol. 2, no. 4, p. 607), Professor G. H. Perkins, of the University of Vermont, describes the Lake Champlain types.