T 



[ 286 1 

 XXVIII. Proceedings of Learned Societies. 



GEOLOGICAL SOCIETY. 



[Continued from vol. viii. p. 668.] 



November 9th, 1904.— J. E. Marr, Sc.D., F.R.S., President, 

 in the Chair. 



HE following communications were read : — 



1. 4 Notes on Upper Jurassic Ammonites, with Special Refer- 

 ence to Specimens in the University Museum, Oxford : II.' By 

 Miss Maud Healey. 



2. ' Sarsen-Stones in a Clay-Pit.' Bv the Rev. E. C. Spicer, 

 M.A., E.G.S. 



Near to Bradenham, midway between High Wycombe and 

 Prince's Risborough, certain clay-pits yield a clay for brick-making, 

 in which are embedded large angular sarsen-stones, white saccha- 

 roidal sandstones with a siliceous cement. This clay is quite flint- 

 less : it rests upon, and is ' contained ' by, Clay-with-Elints based 

 upon Chalk, and is covered with roughly-mingled material containing 

 horizontal bands with worn flint-pebbles and drifted sarsens of 

 smaller size. Each patch of the clay fits roughly into a funnel- 

 shaped depression lined with Clay-with-Flints. The depressions 

 are probably swallow-holes, formed by underground solution of the 

 Chalk, which was covered by wet clay and that by sands of the 

 Bagshot Series. As the clay oozed out into the hollows the sarsens 

 of these sands broke away, and became involved in the clay, much 

 as blocks of the Malmstone at Atherfield become involved in 

 the mud-glaciers which descend from the underlying Gault in 

 the sea-cliffs. The overlying formation is due to much later, and 

 probably Pleistocene, action after the flints of the Upper Chalk had 

 been exposed by denudation. 



3. " On the Occurrence of Elephas meridioncdis at Dewlish 

 (Dorset). Second communication : Human agency suggested.' By 

 the Rev. Osmond Eisher, M.A., F.G.S. 



November 23rd.— J. E. Marr, Sc.D., E.R.S., President, 

 in the Chair. 



The following communications were read : — 



1. ' On an Ossiferous Cavern of Pleistocene Age at Hoe-Grange 

 Quarry, Longcliffe, near Brassington (Derbyshire).' By Henry 

 Howe Arnold-Bemrose, M.A.. E.G.S., and Edwin Tulley Newton, 

 E.R.S., V.P.G.S. 



2. 'The Superficial Deposits and pre-Glacial Valleys of the 

 Northumberland and Durham Coalfield.' By David Woolacott, 

 D.Sc, E.G.S. 



Six volumes, published by the North-of-England Institute of 



