LIST OF ILLTJSTEATIOI^S. 



PLATES. 



Facing page. 



1. Prehistoric iron knives and spearheads. Cemetery of Chei'tau-thagh, 



Russian Armenia 838 



2. Specimens of fine arrowpoints. Italy 840 



3. Specimens of fine arrowpoints. Italy 840 



4. Flint flakes, arrowpoints, and spearheads. Gurob, Egypt, Xllth dynasty, 



2600 B.C 846 



5. Pointed flint flakes, picks, hammer stones, and chisels. Spienues, Belgium. 856 



6. Deer-horn picks. Grimes Graves, and Brandon, Snfi"olk, England 856 



7. Flint objects from prehistoric workshops Grand Pressiguy (Indre-et- 



Loire), France, and other localities in Europe 8.38 



8. Flint knapper engaged in quartering flint. Brandon, Suflolk, England. . . 862 



9. Flint knapper flaking the flints into long slips 862 



10. Knapping the flakes into gun flints. Brandcm, Suftolk, England 862 



11. Implements from flint mines. England 864 



12. Cache of scrapers. Goaleuec, Brittany 86S 



13. Map of Flint Ridge, Ohio, showing aboriginal flint quarries and work- 



shops 868 



14. Worked flints from workshops. Flint Ridge, Ohio 870 



15. Flint chips from workshop. Flint Ridge, Ohio 871 



16. Microscopic thin sections of flint. England 876 



17. Microscopic thin sections of flint. Denmark, France, and Belgium 876 



18. Microscopic tbin sections of flint. France and United States 877 



19. Microscopic thin sections of flint. United States 877 



20. Microscopic thin sections of flint and other rocks. United States 878 



21. Microscopic thin sections of flint and other rocks. United States 878 



22. Microscopic thin sections of rocks, used for aboriginal impletueuta. I'nitc-d 



States S79 



23. Specimens of rock from which thin sections were made 879 



24. Specimens of rock from which thin sections were made 879 



25. Obsidian Cores, flakes, and finished arrowpoints. Principally from North 



America 880 



26. Concave arrow-shaft scrapers of flint. England and United States 884 



27. Arrow-shaft grinders. Cherokee, Iowa 885 



28. Leaf shaped arrowpoints, spearheads, or knives. Division I, Class A 895 



29. Leaf-shaped arrowpoints, spearheads, or knives. Division I, Class B 899 



30. Leaf shaped arrowpoints, speariieads, or knives. Division I, Class 15 899 



31. Leaf-shaped arrowpoints, spearheads, or knives. Division I, Class C 906 



32. Triangular arrowpoints, spearheads, or knives. Division II 909 



33. Stemmed arrowpoints, spearheads, or knives. Division III, Class A 915 



34. Stemmed arrowpoints, spearheads, or knives. Division III, Class H 917 



35. Stenmied arrowpoints, speariieads, or knives. Division III, Class C 925 



36. Stemmed arrowpoints, spearheads, or kuives. Division III, Class C 925 



815 



