62 NEW YORK STATE MUSEUM 



very odd, the broad and notched base having elevated points on either 

 side. It is from the Seneca river, and is of light brown flint, one 

 and three eighths inches long. Fig. 167 is a frequent form, with a 

 broad and deep base, which in some may be widest above or below. 

 Sometimes the contraction above the base is very moderate at first. 

 This is of common flint, and is one and one quarter inches in length. 

 It is one of the frequent forms. Fig. 168 is one of the largest and 

 oddest of this variety, and comes from Brewerton. It is of brown 

 flint, and the broad and curving base has obtuse raised points, 

 strongly suggestive of those in a drill already figured. The length is 

 two inches, and it is nearly as broad. 



Some of these expanding bases suggest the gimlet and thumb- 

 screw, and might have been used with or without an additional 

 handle, but the straight and slender ones, if used for perforating, 

 would have required a handle of some kind. Fig. 169 is a small ex- 

 ample of the thumb-screw pattern, the three arms being much alike, 

 though one is a little longer and narrower than the others. It is of 

 drab flint, one and one eighth inches long, and could be easily turned 

 by the fingers. This is from Seneca river, and another from Brewer- 

 ton, two inches long, presents the same concave base. This is carried 

 still farther in fig. 170, a specimen unfortunately broken, where the 

 wide base is almost as slender as the shaft. One prong terminates in 

 a notched and rounded point, as if for suspension, and it is a question 

 whether the broken part had the same feature, as is probable, or 

 whether it was a double pointed drill. It is of black flint, two and 

 one half inches long, and comes from the Seneca river. A smaller 

 one, somewhat like this but with a narrower base, was found on the 

 Canajoharie flats. The one figured, however, is unique in some 

 respects. 



Fig. 171 is a good example of the gimlet form from Onondaga lake. 

 It is of grey flint, two and one half inches long, and very symmetrical. 

 One from Geneva is almost equally so, and is two inches in length. 

 This form is rarely perfect, from its great liability to injury, but more 

 might be described. Among those having deeper expanded bases is 

 one of rosy quartz, one and three quarters inches long. This is also 

 from Geneva, where many small forms have been found. There are 



