EXPLANATION OF PLATE 2J 



Leaf-shaped Arrowpoints, Spearheads, or Knives. 



r/rtss A. 

 Fig. 1. Fixe Quartzite. 



(Cat. No. 98820, U.S. N.M. Cholnlu, Mexico. W.W.Blake.) 



Fig. 2. Dark Chalcedony. 



(Cat.No.978i, U.S.N. M. Dudley Township, Hardiu County, Ohio. W. W. Murch.) 



Fig. 3. Quartzite. 



(Cat. No. 6440, U.S. N.M. Northampton County, Virginia. C.R.Moore.) 



Fig. 4. Jasper or Jaspery Flint. 



(Cat. No. 66:i3, TJ.S.N.M. Trinity, Louisiana. G. M. Keim.) 



Fig. 5. Dark-Gray Chalcedony or Flint. 



(Cat. No. 61513, U.S. N.M. Bowling Green, Kentucky. L)r. John R. Younglove.) 



Fig. 6. Pinkish Flint. 



(Cat. No. 9880, U.S.N.M. Savannah, Tennessee. J. P. Stellc.) 



Fig. 7. Light-Brown Flint. 



(Cat. No. 5406, U.S.N.M. District of Columbia. J. Vardou.) 



Fig. 8. Black Lvstrous Obsidian. 



(Cat. No. 18088, U.S.N.M. California. J.H.Clark.) 



Fig. 9. Light- Brown Quartzite. 



(Cat. No. 7063, U.S.N.M. Union County, Kentucky. S.S.Lyon.) 



Fig. 10. Black Flinty Chalcedony. 



(Cat. No. 15280, U.S.N.M. Santa Barbara County, California. Paul Schumacher.) 



Fig. 11. Pale-Gray Chalcedony. 



(Cat.No. 15754, U.S.N.M. San Miguel Island, California. W.G.Harford.) 



