1861.] FISHER BHACKLESHAM BEDS. 73 



jS'uniimilina Lvrigata (rare). Ostrca flabcUula. 



Fusus pvriis. Cardita planicosta. 



Metula (^Eucoinum) jiuicea. Cvtlierea lucida. 



Pleurotoma (small). C. suberycinoides. 



Voluta nodosa. Tellina. 



Natica. Panopa^a. 



Turritella? imbricataria. Corbula pisurn. 

 Calyptriva trochiformis. 



III. Feet. 



(5) Alternating beds of green sand and finely laminated 



clay, weatheiing grey and brown ; mth thin scams 



of lignite 18 



II. 

 (7) Yellow sand 10 



I. 



(6) Sandy clay, weathering grey and brown, finely laminated 



vdih yellow sand. There are casts of bivalve shells 

 in a band of clay at the bottom. It is based on from 

 10 to 18 inches of black rounded flirit pebbles, often 

 as large as swans' eggs 95 



653 



This section will be used as a tj-pical section, the beds being 

 referred to by means of the Eoman numerals. 



Brack'Iesliam Bay. — I wdll now shortly describe the principal 

 locahties where the Bracklesham Beds yield a harvest to the 

 collector. 



^Vmong these, Bracklesham Bay, both for interest and display of 

 the beds, undoubtedly holds the highest place, although it is ex- 

 tremely difficult to preserve the fossils found there, on account of 

 their perishable condition *. 



The beds are exposed on the shore of a shallow bay ; their strike 

 is about W. by 8. and E. by N., and they dip slightly S. by E. 

 There is no opportunity given to measure the dip or the thickness 

 of the beds with accuracy. In the following section the order of 

 the beds is correctly noted ; and the distances between the outcrops 

 on the shore may be taken to give the proportions of the thicknesses 

 of the lower beds approximately ; but towards 8elsea Bill, where 

 the upper beds are exposed, their strike is nearly tangential to the 

 coast, and conseriuently we continue upon the same outcrop for a 

 considerable distance. Here, as at White Cliff Bay, the chief dif- 

 ficulty in determining the relation of tlie beds occurs at the upper 

 part of the section. At the extreme southern point, at low water 

 at spring-tides, a few septaria crop out, resting on a very sandy 

 clay, weathered greenish, and containing the remains of fossils. 

 Among these I distinguished Cassidaria coronata and Metula (Buc- 

 cinum) juncea ; but the relation of this bed to the rest of the section 



* I have ii!«cd isinglasa dissolved in ^in for this purpose. Mr. Dijion recom- 

 mended a mixture of diamond-cement and water. 



