EXPLANATION OF PLATE 5 6. 



Flint Flakes Chipped on One Edge Only, Intended for Knives. 

 Fig. 1. Flint. 



(Cat. Xo. 2701)1, U.S.N.M. CumbiTland Mountains, Tennessee. Gen. J. T. Wilder.; 



Fig. 2. Flint. 



(0.11.^0.60205, U.S.N. M. Tennessee. C. S. Grigsby.) 



Fig. 3. Flint. 



(Cat. N 1. 19234, U.S.N.M. Louisville, Kentuck'. Dr. James Kna])p.) 



Fig. 4. Flin;. 



(Cat. No. 100257, U.S.N. M. Spienues, IJelgiuni. Thoiuas Wilson.) 



