908 



REPORT OF NATIONAL MUSEUM, 1897. 



Fig. 129. 



LEAF-SIIAPEl) IMPLEMENT OF 

 LUSTROUS FLINT ORCHALCE- 

 DONY, WITH CONCAVE BASE 

 AND PARALLEL EDGES. 



California. 



Division I, Class C 



r.|x2x/8. 



Cat. No. 21628, U.S.N.M. 





■:7\ 



% 



Fig-. 124. a specimen of modern spear of obsidian flakes from New 

 Caledonia, attached to a tliin handle or shaft by means of gum, bitumen, 

 or asphalt, and, taken from Sir John Lubbock's 

 Prehistoric Times, is inserted for comparison. 



Fig. 125 is an extremely thin, 

 lincly chipped object, from Santa .m. 



liarbara County, California, and /^^ 



is a sample of those from the 

 Pacific coast. We are to remark 

 the long, narrow blade, the ])ar- 

 allel edges, the fine material, the 

 delicate chipping, and the ex- 

 treme thinness as peculiarities of 

 these implements from this lo- 

 cality. The specimens on Plate 

 31 will serve as further illustra- 

 tions. 



Fig. 120 is another of the 

 long, narrow, and thin flint or 

 jasper implements from the Pa- 

 cific coast. Although it is 7f 

 inches long and 2 inches wide, 

 it is but one-eighth of an inch 

 thick. It, with two or three 

 other specimens, is peculiar in 

 that, though thin, they have 

 not been reduced by chipping. 

 They are quite flat in section, 

 reduced in thickness only to form the edge. This i)ecu- 

 liarity is caused by the layer of flint being of natural 

 formation in its j) resent thickness. The deposit of flint, 

 however made, has been intercalated witli a layer on 

 each side of what has the appearance of lime or chalk, 

 the surface being broken by right lines into parallelo- 

 gramic figures, as shown in the illustration. Only 

 slight chipping was necessary to reduce the imple- 

 ment to a sharp edge. For the better understanding 

 of this, reference is made to Plate 31, fig. 2. 



Fig. 127 is the longest, thinnest, and narrowest of 

 these leaf-shai^ed objects from the Pacific coast. Its 

 edges are parallel for nearly the entire length. It is 

 slightly thicker nearer the base, which is strongly con- 

 cave. It is of gray flint or jasi)er, and has been de- 

 posited in the strata mentioned in the description of 

 fig. 12G, of which traces are shown in the illustration, 

 been wrought by chipping, and they, with the point and barbs, are fine 

 and sharp. 



'Pig. 130, 



LEAF-SHAPED IMPLE. 

 MENT OF BLACK 

 FLINT, WITH CON- 

 CAVE BASE AND PAR 

 ALLEL EDGES. 



California. 



Division I, Class C. 



10xl4x§. 



Cat. No. 62483, U.S.N.M. 



The edges have 



