The Quarterly journal of the Geological Society of London . er the sarsen was notBagshot Beds in situ. It is not unusual to find sarsens in sand nearthe surface of the ground, unaccompanied by gravel. Several weredug up when making a new football-ground at Wellington College,and I have kept two specimens. They are somewhat waterworn,and no doubt have been let down from their original position duringthe course of denudation of the sand around them, as was long agosuggested by Mr. Whitaker.^ Of course, these furnish no evidenceof ice-action. In his admirable History of the Sarsens, Prof. T. Rupe
The Quarterly journal of the Geological Society of London . er the sarsen was notBagshot Beds in situ. It is not unusual to find sarsens in sand nearthe surface of the ground, unaccompanied by gravel. Several weredug up when making a new football-ground at Wellington College,and I have kept two specimens. They are somewhat waterworn,and no doubt have been let down from their original position duringthe course of denudation of the sand around them, as was long agosuggested by Mr. Whitaker.^ Of course, these furnish no evidenceof ice-action. In his admirable History of the Sarsens, Prof. T. Rupert Jones ^mentions some very fresh sarsens (by which I understand, stonesonly a little waterworn) on Crawley Hill, a spur from the Chobhamllidges plateau. He describes them as at the bottom, or almost atthe bottom, of gravel, and resting, or nearly resting, on the UpperBagshot; and all authors agree that this is a very usual positionin which to find sarsens. I have noted a section which illustrates Fig. 2.—Section on Red Road, Chohham Ridges, Surrey. I-. :•. Mil 10 15 20 feet [The level of the top of the section is 400 feet above Ordnance datum.] The plateau of Chobham Ridges extends to the west, and the valley is eastof the section. i = White (discoloured) sand and gravel of irregular thickness, up to 1 = Gravel of subangular flints, flint-pebbles. Lower Greensand chert andragstone, and small quartz : 6| feet thick at the western or plateau-end ; 2 feet at the eastern or valley-end. This is Southern Drift of the Chobham Eidges plateau. A sarsen2^ feet X 3 inches is shown at the eastern end of the = Yellow sand : the lower part is Upper Bagshot Beds in sltic, the upperpart is the sand of the Upper Bagshot re-arranged; 10 feet exposed. 1 Geol. of Middlesex, etc., Mem. Geol. Surv. 1864, p. Wilts Arch. & Nat. Hist. Soc. Mag. 1886, p. 122. 188 ME. H. W. MO]SrCKTON ON SOME GRAYELS [^aj 1898, this remarkably well. It is a cutting on a road, named
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