532 Transactions of the Society. 



Eocks opposite Selsey yield the Alveolina limestone, of which so 

 much of the village is built. It is no longer quarried, as its 

 removal led to a more rapid wasting of the coast." The whole 

 of these Tertiary and Post-Tertiary deposits (which will receive 

 our careful consideration when the time arrives for presenting our 

 completed work to the Society) are overlaid by the Coombe Kock 

 and brick-earths which Mr. Clement Eeid has made the subject 

 of significant study and observation (Postscript, Nos. 6 and 9) ; 

 and, as we pursue our way round the Bill, we meet again, 

 cropping out upon the eastern coast, the Nummulite bed, and the 

 Cardita and Turritella beds, before we reach the broad expanse of 

 marsh clay, overlaid with recent shingle, that shelves from 

 Pagham harbour into the sea, just beyond the long spit of heaped- 

 up shingle that stretches seaward opposite Park Farm. It must 

 be borne in mind that the coast of Selsey Bill has been, and is, 

 subject to a degree of annual erosion, unsurpassed on the British 

 coasts. It was our intention to show, by means of a map, the 

 old coast-lines as shown upon survey maps, dating from 1570 

 until the present time ; but we have been unable to complete this 

 work for the present occasion (for which, perhaps, it would have 

 been premature), but the map will be completed in this particular 

 for the illustration of our later paper. By that time, also, we 

 shall have completed a series of carefully measured sections which 

 we are preparing, showing the strata of the brick earth, torrent 

 gravels, marine gravels, and drift all over the Selsey peninsula. 

 And, with a view to giving more complete data for the micro- 

 geologist, we shall present an analysis of some thirty-six samples 

 of strata, reaching from the 16-foot level to the 100-foot level, 

 taken from two artesian borings that I have made through this 

 Coombe rock and the underlying strata in the centre of Selsey 

 village in a fruitless search for an underground water supply. 



I little knew when, as a new settler in Selsey at the commence- 

 ment of 1907, I determined to make a systematic study of the 

 Foraminifera of the Selsey shore-sand — fired by Arthur Earland's 

 exhaustive study of the Foraminifera of Bognor (Postscript, No. 17) 

 and my own earlier and desultory studies of the same sand, and of 

 that at Littlehampton — what I was undertaking. It seemed to 

 me that, to arrive at a complete catalogue of the species to be found 

 between tide-marks, all that was necessary was to make an ex- 

 tended gathering and wash, float, and elutriate the contained forms. 

 Accordingly, in the course of some half-dozen walks at low tide 

 from the foreshore of the extreme point, slightly to the east of the 

 Marine Hotel, up to Bracklesham Bay (Thorney Farm), a distance 

 of about 2£ miles, I collected exactly 1000 cubic centimetres of 

 foraminiferal scrapings, which, after treatment, gave the following 

 results : — 



