TBANSACTIONS OF SECTION C. 509 



wicb's No. 13. No. ix. of Fisher and 13 of Prestwich is the chief fossiliferous had. 

 Nuimmdinn variolaria, Valuta nodosa, and Sanguinolaria Holloxoaysii, are the chief 

 fossils in this bed ; the thickness of the group is only 27 feet. 



Group 0, Avith beds viii., vii., and xi., correspond to Professor Prestwich's 

 Nos. 2 and 11. No. vii. contains the distinctive and characteristic nummulite, N. 

 teyjY^rtffa, also equally abundant at Bracklesham Bay with Sanguinolaria HoUoxcaysii. 

 Bed No. vi. of Fisher, and No. 1 of Prestwich, is very fossiiiferous. These 3 beds 

 measiure 123 feet. 



Group D is composed of beds No. v., iv., iii., ii., and i., or Nos. 10, 9, 8, 7, and 

 6 of Prestwich. The only fossiliferous bed in this group is No. iv. of Fisher, and 9 

 of Prestwich, in which the great Venericardia planicosta abounds, as at Brackles- 

 ham Bay, the fine shell Cyprcea tuberculosa not occurring at Whitecliff Bay. The 

 beds comprising this group are 251 feet thick ; in all, the Bracklesham beds 

 at Whitecliff Bay measure 653 feet. I have deemed it important to partly 

 particularize this remarkable section at Whitecliff Bay by way of comparison 

 with the fine section shown at low water in Bracklesham Bay, where the beds 

 occupy the shallow shore for 3| to 4 miles, and are nearly horizontal, or dip 

 S. by E., with a strike of W. by S. and E. by N. So nearly level are the beds, 

 that there is no opportunity given to measure the dip or thickness with accuracy. 

 Mr. Fisher, in his excellent section, has given the order of succession of the beds, 

 and the distances between the outcrops. The beds exposed towards, or near 

 Selsea Bill, belong to the upper members, and their strike is nearly tangential to 

 the shore, consequently we continue our walk upon the same outcrop for a long 

 distance in step-like planes. I give the Rev. O. Fisher's section and sequence 

 round Selsea Bill as he observed them, as a guide to those who may visit the area. 

 Vide ' Quarterly Journal of the Geological Society,' loc. cit. 



Commencing at a spit of gravel seen at low water off ' the Bill,' brought 

 together by the meeting of the tides from the 'Park' and Bracklesham Bay, and 

 going westward or towards Wittering, we have the following ascending section :' — 



Paces 



* Beds then covered with sea sand 600 



Outcrop of septaria, on sandy clay weathered green beds 



covered with sea sand 127 



Hard dark grey, sandy bed, nummulitic in upper part (num- 



mulites abundant at 216 paces, concretions at 226 paces) . 420 

 Nummidina variolaria, and other foraminif'era in clay . . 324 



* Taking up this last-named bed again as being the highest distinguishable at this 

 place, we then have the general descending series along nearly 3 miles of the shore ' 

 westwards. 



Descending Section of Bracldesham Beds at Bracklesham Bay. 



Paces 

 ' 22. Clay — NummuUna variolaria, Alveolina sabulosa, Quin- 

 queloculina, JIazueriiia, Biloculina ringens, Rotalia obscura, 

 Turbi7iolia sulcata, &c. ....... 324 



21. Hard calc. sand ; ' Hard Bed' foraminifera, Tellines . .140 

 20. Grej'ish clay with Corhda and Nummulin(B . . . 120 



19 (d). Dark clay (CyprsBa bed, Dkon) 460 



18. Sandy clay containing same shells as 19{d) ... 66 



17. „ „ green foss. in upper part 194 



i Pleistocene mud ^ 112 



j_ Green sandy clay 300 



• Every yard of this bay and its extended beds were measured and paced, and"^ 

 the map constructed by Mr. Bristow and myself, and the fossils observed in the I 

 numerous thin beds comprising the section. ^ 



' These clay beds are nearly modern in age, and cover up unconformably the under- 

 lying Bracklesham beds. 



