84 NEW YORK STATE MUSEUM 



very uniform in depth and width. Occasionally small stones are 

 grooved in the same way. Fig. 241 is a reduction of one of these 

 from the Minden earthwork, south of Fort Plain. It is a block of 

 sandstone, 15 by 18 inches across, and has two grooves of the 

 usual width and character. 



Another of these, but much smaller, comes from Schoharie, and 

 is five and three fourths by three and three fourths inches. This 

 has three parallel and one cross groove, but they are reported much 

 narrower than usual, being but little over a quarter of an inch wide. 

 The block is of grey sandstone. Another small one comes from 

 Frenchman's Island, in Oneida Lake. In this the groove is three 

 quarters of an inch wide, with another partly within it. A few 

 other small ones have been found, but usually large boulders were 

 used. Of these larger ones Dr. Rau mentioned some in Massachu- 

 setts and New York. 



One of clay slate and of irregular form comes from Dutchess 

 County, and is 17 by 13 inches, and seven inches thick. It has one 

 perfect groove, now 10 inches long, but originally more. This is half 

 an inch wide and three eighths deep. Another groove is unfinished. 

 One from Deming's Point is broken through the center of the 

 second groove. This is now 10 inches long, but originally more. 

 The width is five eighths and depth three eighths of an inch. Striae 

 appear in both. 



The most remarkable of the large grooved boulders, is that de- 

 scribed by Clark in his history of Onondaga, and it was the first to 

 attract much attention. The Gothic letters XIIIII fairly represent 

 the arrangement of the grooves. The boulder is of corniferous 

 limestone, 23^ by 22 inches across. The grooves are wider than 

 usual, being three quarters of an inch, and the striae are obscure. 

 The longest groove is about 15 inches. It was in the ravine by the 

 old Indian Fort in Pompey, reputedly of recent occupation. 

 Another from that vicinity is also of limestone, 26 by 22 inches 

 across. There are seven grooves irregularly dispersed, five eighths 

 wide and three eighths of an inch deep. The grooves are about 

 seven to 12 inches in length. A small block of blue limestone, much 

 weathered, has two grooves. Another in the same condition, has 



