15 



that the rider works in a cavity surrounded by a rim. This 

 primitive manner of grinding corn is still in use in many parts 

 of the world. 



114. 



Upper Stone of Quern , made of micaceous grit, convex above, 

 fiat below. There are two perforations — one marginal, for the 

 insertion of a handle, and one central and funnel-shaped, to 

 admit the grain. Diameter, 14 ; thickness, 5 inches. 

 115. 

 Upper Stone of Quern, made of sandstone. It is disc-shaped, 

 and has a central and four marginal holes. Diameter, 14 inches ; 

 thickness, z\ inches. 



116. 

 Upper Stone of Quern, similar in size and form to the pre- 

 ceding, but more rudely formed, and but one lateral aperture. 

 117. 

 Upper Stone of Quern, made of sandstone, but of the same type 

 as the preceding. Diameter, 19; thickness, z\ inches. The three 

 last specimens were found in a bog at Maghera, County Derry. 

 118. 

 Upper Stone of Quern, of coarse granite, and very rude. 

 Diameter, 18 ; thickness, 3^ inches. Found in County Down. 

 119. 

 Upper Stone of Quern, similar to 114. Diameter, 13 ; thick- 

 ness, 5 inches. Found at Saintfield, County Down. 

 120. 

 Upper Stone of Quern, like the preceding. It has had two 

 lateral holes for handle, but one has broken out in use. 

 Diameter, 1 3^ ; thickness, 4^ inches. Found in a bog at 

 Randalstown, County Antrim. 



121. 

 Upper Stone of Quern, of same type as the preceding. A 

 very fine, massive example, having carved decoration on its 

 convex surface. Diameter, 14^; thickness, 5^ inches. 

 122. 

 Upper Stone of Quern, having the same general characters as 



