64 BULLETIN 14 7, UNITED STATES NATIONAL MUSEUM 



not continuous with the flat lateral surfaces or witli the slope of the 

 edges. The celt has a roughly triangular outline. It, together with 

 other celts showm in Plate 5, was uncovered at the San Juan site. 

 Dimensions: 8 centimeters (3.2 inches) long and 4.2 centimeters 

 (1.6 inches) wide. Greatest width is at the cutting edge instead of 

 at the center, as with 1 and 2. (Cat. No. 341014, U.S.N.M.) 



Celts 4 and 5 (PI. 5) represent a well-established Araw^ak type; 

 they are more rounded and slender in section, have a larger head, 

 but are uniformly beveled on a slope beginning at the center of the 

 celt, as wnth 1 and 2. This type is frequently found in deposits 

 along with the petaloid stone celt and tends to confirm the San Juan 

 site as partly Arawakan in type, an observation confirmed by other 

 kinds of artifacts to be described. Dimensions of 4: 10 centimeters 

 (4 inches) long and 2 centimeters (0.8 inch) in diameter. (Cat. No. 

 341016, U.S.N.M.) 



Hamjnerstones. — Improvised tools meeting the requirements of a 

 variety of uses were flaked from a form of schistose rock. Some were 

 apparently used primarily as fish-scaling knives and were held in the 

 hand. There is no evidence of hafting. These primitive undifferen- 

 tiated tools were particularly plentiful in the cave deposits and at 

 Anadel. One of these implements which may be selected as a type 

 is Cat. No. 341052, U.S.N.M. Dimensions : 6.9 centimeters (2.7 inches ) 

 long, 5 centimeters (2 inches) wide, and 1.5 centimeters (0.6 inch) 

 thick. 



Two stone hammers partially grooved at the center for hafting are 

 illustrated as 4 and 5 of Plate 1. These stone hammers are much 

 abraded at either end through use. In 5 the end fractures are so 

 placed as to form an effective cutting edge. These and similar stone 

 implements are general utility forms and may even have been used 

 as net weights. Dimensions of 4 : Length, 6.4 centimeters (2.5 inches) ; 

 width, 5 centimeters (2 inches) ; thickness, 2.6 centimeters (1 inch). 

 Dimensions of 5 : Length, 9 centimeters (3.6 inches) ; width, 6.4 cen- 

 timeters (2.5 inches) ; thickness, 2.6 centimeters (1 inch). (Cat. No. 

 341052, U.S.N.M.) 



A large flat-surfaced stone flake, probably used as a crude knife 

 and hand hammer is figured as 6 of Plate 1. Uniformly fractured 

 facets extend entirely around the circumference. They have been 

 struck off from either side as to give a blunt cutting edge all around. 

 No grooves for hafting nor pits excavated at the sides are in evi- 

 dence. Dimensions: Diameter, 12.5 centimeters (4.9 inches); thick- 

 ness, 2 centimeters (0.8 inch). (Cat. No. 341048, U.S.N.M.) 



No. 3 of Plate 1 is a thickish stone flake (1.3 centimeters (0.5 

 inch) in section). One of the edges shows much abrasion through 

 use, apparently as a hammerstone. The lower section has been pol- 



