By Professor T. Rupert Jones, F.B.S., F.G.S., Sfc. 151 



Sands, had they ever spread over the country, would have been 

 least separated from the Chalk." . . . . " Blocks of pudding- 

 stone, or Grey wethers containing" flint pebbles, are of rarer occurrence 

 in this country [Sheet 13] than those of simple sandstone. They 

 may be seen in the neighbourhood of Nettlebed 1 and Wickham." 

 Small pieces of fossil wood " have been noticed in the Grey wethers/' 



§ 3. 



Descriptive Catalogue of the Rock-specimens in the Museum of 

 Practical Geology, &c, 1862, p. 163. 



" Greywether Sandstone. Overton Down, near Avebury, Wilt- 

 shire. Map 34. Scattered blocks of this saccharoid sandstone or 

 grit lie on the surface of the country in Dorsetshire and Wiltshire 

 sometimes (as in the Valley of Stones, west of Black Down, Map 

 17, and on the Chalk Downs in the Vale of Pewsey) in such 

 numbers that a person may almost leap from one stone to another 

 without touching the ground. The stones are frequently of con- 

 siderable size, many being four or five yards across, and about four 

 feet thick. In Bride Bottom (Valley of Stones) they are often 

 conglomeratic, being composed of rounded, sometimes angular, 

 Chalk-flints in a base of white siliceous grit ; and in many instances 

 the same block furnishes an example of this structure, one portion 

 consisting of sandstone, and another of conglomerate, occurring with 

 a well-defined line of separation between them. In the village of 

 Little Bredy they may be seen in the brook which flows by the 

 side of the road ; and in many instances, when it has been possible 

 to do so, advantage has been taken of their position to build them 

 into the walls of the houses." . ..." On the turnpike-road 

 from Dorchester to Broad Maine [Broadmayne, see above, p. 136] 

 blocks of this stone are visible (apparently in place), by the roadside 

 at Little Maine, in sands which rest immediately on the Chalk ; 

 while several other blocks of it are scattered over the surface of the 

 adjoining fields." 



§ 4. 



Memoirs Geol. Survey of Great Britain, &c. Geology of parts 

 of Berkshire and Hampshire, Sheet 12, 1862, by H. W. Bristow 



1 Prestwich, Q. J. G. S., vol. p. 126. 



