Similarity of their stone implements and ornaments.--In addition to the special points of resemblance between the works of the two peoples, of which a few only have been mentioned, we are warranted in asserting that in all respects, so far as we can trace them correctly, there are to be found strong resemblances between the habits, customs, and arts of the mound-builders and those of the Indians previous to their change by contact with Europeans. Both made use of stone implements, and so precisely similar are the articles of this class that it is impossible to distinguish those made by the one people from those made by the other. So true is this that our best and most experienced archaeologists make no attempt to separate them, except where the conditions under which they are found furnish evidence for discrimination. Instead of burdening these pages with proofs of these statements by reference to particular finds and authorities, I call attention to the work of Dr. C. C. Abbott on the handiwork in stone, bone, and clay of the native races of the northern Atlantic sea board of America, entitled "Primitive Industry." As the area embraced in this work, as remarked by its author, "does not include any territory known to have been permanently occupied by the so-called mound- builders," the articles found here must be ascribed to the Indians unless, as suggested by Dr. Abbott, some of a more primitive type found in the Trenton gravel are to be attributed to an earlier and still ruder people. Examining those of the first class, which are ascribed to the Indians, we observe almost every type of stone articles found in the mounds and mound area; not only the rudely chipped scrapers, hoes, celts, knives, and spear and arrow heads, but also the polished or ground celts, axes, hammers, and chisels, or gouges. Here we also find drills, awls, and perforators, slick stones and dressers, pipes of various forms and finish, discoidal stones and net sinkers, butterflys tones and other supposed ceremonial objects, masks or face figures and bird-shaped stones, gorgets, totems, pendants, trinkets, etc. Nor does the resemblance stop with types, but it is carried down to specific forms and finish, leaving absolutely no possible line of demarkation between these and the similar articles attributed to the mound-builders. So persistently true is this that had we stone articles alone to judge by, it is probable we should be forced to the conclusion, as held by some writers, that the former inhabitants of that portion of the United States east of the Rocky Mountains pertained to one nation, unless possibly the prevalence of certain types in particular sections should afford some data for tribal districting.