116 Professor T. Ruperf Jones — History of Sarsens. 



varies from 6 to 9 inches. The stones supporting the bridge and 

 bank are laid regularly ; they are all Sarsens, and others lie about 

 irregularly. One lies near the fence just beyond the path on the 

 further side of the bridge. — C. T. E. Jones. 



1898. H. W. Monckton, Quart. Journ. Geol. Soc, vol. liv, 

 pp. 185-193, treating of some gravels in the Bagshot district, notes 

 that Sarsens occur at the base of these gravels, which are of the 

 Glacial Period, and were probably of fluviatile origin. Sarsens 

 with rootlet marks occur at Easthampstead. He doubts if any 

 Sarsens occur in the Upper Bagshots, and supposes that probably 

 most were derived from the Woolwich and Eeading Sands. All the 

 Sarsens must have been water- worn, or weather-worn before thej"^ 

 were left in the gravel. 



N.B. — At Camberley, in North Surrey, a Sarsen having a partial 

 polish on one of its sides was noticed, and the polish is ascribed to 

 the contact and rubbing of the dried stems of grasses and other 

 plants (with siliceous tissue) moved by the wind. — T, E. J, 



In Buckinghamshire Mr. Upfield Green, F.G.S., has observed both 

 pebbles and prominences on pudding stones, smoothed and' polished, 

 on the sides of water holes, in the Brickearth near Great Missenden. 



1900. Sarsen at Ballard's Farm, Croydon, a white saccharoidal 

 sandstone with siliceous cement. Dr. G. J. Hinde has kindly given 

 me the following notes on this large typical Sarsen near Croydon, 

 which is visited by geological classes from London. Its dimensions 

 are: length 4 ft. 10 ins. ; width at one end 2 ft. 9 ins., at the other 

 2 feet ; thickness at one end 1 ft. 8 ins., at the other 11 inches, and at 

 another place 14 inches. It lies in a grass field on Ballard's Farm, 

 on the south side of the bridle-path leading from Ballard's Lodge to 

 the Addington Hills ; and near to the outcrop of the sand-and- 

 pebble beds of the Woolwich and Eeading Series, of which indeed 

 it is probably a concreted portion, like the similar blocks in the 

 Caterham Valley. 



(10) Hampshire.— 18Q2. Captain H. Blundell (Staff College) 

 noticed a large Sarsen in a ploughed field, about 4 miles from 

 Winchester and 1 mile from Martyr Westley Eectory. It is 12 feet 

 long, 10 broad, and 8 deep, " and bears a strong polish on a great 

 part of one side," glaciated or polished by the friction of siliciferous 

 stems of wheat. " The other side is hollowed out apparenth^ 

 by water." ^ 



1898. Mr. A. E. Salter has seen a Sarsen in the gravel at Lee-on- 

 the-Solent (Stubbington) : Quart. Journ. Geol. Soc, vol. liv, p. 194. 



(11) BerTcshire. — 1787. Daines Barrington made some remarks 

 on the Greywethers in Berkshire {Archoeologia, iii, p. 442). 



1813. In W. Mavor's " Eeport on the Agriculture of Berkshire," 

 1813, at pp. 34, 35. The Sarsen Stones, or Greywethers as the 

 country people call them, are irregularly scattered over the Berk- 

 shire and Wiltshire Downs. They are pretty numerous in a valley 

 near Ashdown Park and on the road from thence to Lambourn. 



1 See also Lieut. -Col. Nicolls on '* Sarseus," Southampton, 1866: Geol. Mag.,. 

 Vol. Ill, pp. 296-298, PL XIII. 



