934 



REPORT OK NATIONAL MUSEUM, 1897. 



notches which fonii it are iiuide in the edges near the base. The angle 

 of the slionldeis Ibi lu tiie usual barb ; the iirojecting- corners of the base 

 may also form anotlier pair of barbs. If the arrow shaft used on this 

 si)ecinien should be small in diameter, the points of the base would 

 project beyond it, and thus form a double set of barbs. 



Fig. 182 has the appearance of gray tlint, but it is of translucent 

 crystalline structure, and an inspection identifies it as chalcedony or 

 chalcedcMiic'tlint. Its edges are curved, a union of concave and con- 

 vex, making them slightly ogee. The base is straight, the barbs are 

 long and thin, and, what is rare, are nearly the same size their entire 

 length. The notch which forms them begins at the corners of the base 

 and edge and, ascending at an angle of about 45 degrees toward the 

 center of the implement, is one-half an inch long and only one eighth 

 of an inch thick or wide. 



Fig. 183 is from Kentucky, gray flint, stemmed, shouldered, and 

 barbed, and twisted to the left. The specimens of this class average 

 from one-fourth to three-eighths of an inch in thickness, and are of 

 all sizes and lengths. Reference is made to Plate 37 for other specimens. 



Rev, J, G. Wood,' author of The Natural History of ]Man, describes 

 arrows with a rotary motion, which he says are used with theblowgun: 



Rotary luotiou waa commiiuicated to tlie arrows iu their flijjlit by attaching to 

 their lower ends two feathers — one from the right wing, the other from the left wing 

 of a liird — which acted obliqnely against the air and thus imparted the rotary motion 

 required, 



CLASS B. — SERRATED EDGES, (Plate 38, figS. 1-9.) 



Fig. 184. 

 PEGU LI AK FORM OF 

 AKKOWPOINT, WITH 

 SERRATKD EDfiES. 



Oregon. 

 ■Division IV, Class K. 



TixJxJ. 

 (Jat. No. 15716, U.S.N. M. 



These may be ol the usual types as 

 to form, stem, barb, etc., but the ser- 

 rated edge is a peculiarity sufficiently 

 marked to prevent their being as- 

 signed to their respective types. The 

 edges are jagged like sawteeth, and 

 the serrations about the same size 

 and frequency as a moderately fine 

 handsaw. They are not the result of 

 hazard in chipping, but are made by 

 pressure with a pointed flaker exerted 

 on the edges from alternate sides and 

 at intervals, and are done with a 

 purpose. 



, lt>5. 



PECULIAK FORM OF 

 AKKOWPOINT, WITH 

 SERRATED EDGES. 



Stockton, San Joa- 

 quin County, Cali- 

 t'oriiia. 



Division IV, Class B. 



IJx/oXy^. 



Cat. No. 43029, U.S.N. M. 



' Anthropological Review, VTT, 18f)9, p. Ixxi. 



