H. B. Woodward — Greyicethcr or Sarsen-stone. 543 



IV. — A Gkeywethek at South Kensington. 

 By H. B. WooDWAED, F.E.S. 



IN tbe Geological Magazine for March, 1891, p. 119, I drew 

 attention to the occurrence of a large Greywetber in Moscow- 

 Street, Bayswater. Another and smaller exaruple has lately been 

 discovered in the foundations for the new buildings of the Victoria 

 and Albert Museum, South Kensington. The excavations show : 

 Made ground and soil, about 5 feet. 

 Gravel, full thickness about 20 feet. 

 London Clav with cement stones. 



Greywether or Sarseu-stoue from the Gravel. Yieturia and Albert Museum, South 

 Kensington. (One-twelfth natural size.) 



The Greywetber was found at the south-western part of the site, 

 ten feet from the surface, and at a depth of five feet below the top 

 of the undisturbed gravel. In size it is 3 ft. 10 in. by 3 ft. 3 in. and 

 2 ft., according to the greatest measurements, but the stone is 

 somewhat irregular in shape and the bulk is less than these full 

 measurements would indicate.^ The stone is a somewhat coarse 

 sandstone, with the grains more distinct than in many examples 

 of Greywetber or Sarsen-stone. One side is much smoothed and 

 almost polished, as if by wind-drifted sand. The block may have 

 been formed in the Bagshot Sand, and may have long remained on 

 the surface of the land in Pre-Glacial times, a relic of Eocene strata 

 the denudation of which took place partly during the Miocene and 



' Mr. C. Barlow, Mason-Formatore in the Geological Department, estimates the 

 cubic contents of the 'Sarsen-stone' at from 10 to 11 feet, and its weight from 

 13 cwt. to 14 cwt. 



