Mr. Webster on the Reygate Stone . 
3 57 
sometimes found crystallized masses of sulphate of barytes, of a 
beautiful yellow colour ; the interstices between the crystals being 
frequently filled up with translucid white quartz. The crystals of 
sulphate of barytes are rhomboidai prisms, but specimens with 
terminations are rare. Masses have been met with weighing a 
hundred weight. These beds of fuller’s earth are covered by a 
about fourteen feet of a rock, L, having the general characters of 
the green sandstone, containing layers of flattened nodules of hard 
rag or limestone, as at Western lines, Isle of Wight. I consider this, 
therefore, as a capping of green sandstone forming the summit of 
the hill]; and the fuller’s earth consequently occupies a situation 
between it and the ferruginous sand , in fact, the situation of the 
blue marl of the Isle of Wight. There are four pits of fuller’s earth 
at some distance from each other in Nutfield Ridge, west of the village 
of Nutfield ; and this substance is found in Redstone-hill, but is not 
worked there. Further to the south, and at a lower level, the 
ferruginous sand extends into the Weald of Kent. Cockham-hill, 
south of Reygate, is ferruginous sand ; and about two miles to the 
south, in Earl’s common, the Petworth stone with shells is found. 
