214 AN ANCIENT CRAZING MILL. 



stone that was 4 feet in diameter, and 9 inclies thick on the edge, 

 has grooving's on the face deeply indented. Another part of a 

 bottom mill-stone that was 4 feet in diameter, and is a little con- 

 vex, has also the groovings strongly marked. 



The stones with basin-shaped hollows are similar to many that 

 have been found in different parts of Cornwall and Devonshire, 

 and have been described by Mr. Cunnack, Mr. Worth, and others, 

 as having been used for pounding tin-stone. One of these stones, 

 however, is different from any that I have before seen described. 

 It is a rough block of granite 4 feet long, 14 inches wide, and 

 14 inches deep. On each of its sides, very nearly in a line, 

 there are four basin-shaped hollows, from 7 to 9 inches in diam- 

 eter on the surface (being a little elongated across the block), and 

 from 2 to 5 inches deep. From the regularity of the hollows, it 

 is very probable the "Pounders" were worked by machinery 

 similar to the stamps of the present day, and when one side of 

 the block was worn, another side was used. 



Besides those mentioned, there are other stones that would ap- 

 pear to have been used in piilverising sand by hand. 



The remains I have attempted to describe, are well worth a 

 visit by any person interested in the works of the early tin miners. 

 That the stones were used for pulverising tin-ore, I consider there 

 is very little doubt. When I first visited the place 27 years ago, 

 there was something like an old buddle, the sides and bottom of 

 which were made with rough stones, and as far as I can remem- 

 ber, it was about two feet in width. In scraping between the 

 stones in the bottom, some sand was found that yielded a good 

 van of tin. 



