HEADON HILL SAWDS. 123 



South of Gunville about half a mile from Carlsbrook in a north- 

 west direction, the Headon Hill Sands and the Barton Clay are 

 thrown up into a vertical position in the brick-pits, where the 

 latter deposit constitutes the brick -earth which was formerly 

 worked there, and, as has been already stated, contained a few fossils. 



In East Medina, the Headon Hill Sands showed themselves 

 near Mornhill Farm, and in a pit at the south-ea'^t corner of the 

 wood by the side of the road from Arretou Down to Lynn Farm, 

 where they are |)ure white glass-house sands, together with some 

 of a yellow colour. They are here also vertical, resting with a 

 sharp, well-defined line (marked by a few small rounded flint- 

 pebbles) on green clay — Barton Clay. The age of the strata in 

 this last section is, however, somewhat doubtful, for they are 

 curiously disturbed at this point, and so hidden by gravel that 

 the sands may possibly belong even to the middle division of the 

 Hamstead Beds. Unfortunately this pit being now entirely 

 overgrown cannot be re-examined. 



The Headon Hill sands have also been observed in pits at 

 Combley and south of Little Nunwell, as well as on the north side 

 of Bembridge Down, by the side of the road to Bembridge Farm. 

 In Whitecliff Bay the junction between the Headon Hill Sands 

 and the Barton Clay is likewise sharp and well defined, and the 

 former group has a thickness of 184 feet. 



Fossil remains are particularly scarce in this member of the 

 Eocene series ; though repeatedly searched for during the pro- 

 gress of the survey, no fossils were procured except in Whitecliff 

 Bay, where a few ferruginous casts of bivalve shells were found — 

 chiefly Tellina, Panupcea, &c. — which, however, could not be 

 preserved on account of their loose and friable condition. 



