92 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [DeC. 4, 



quently visited by earthquakes : such are recorded as having occurred 

 in recent times, and, of late years, in December 1824 (Portsmouth, 

 Chichester, and the neighbourhood), in 1833 (Horsham, Sussex), 

 and in January, August, and October of 1834 (Chichester, &c.)*. 



Conclusion. — Before concluding this paper, there is one point to 

 which I would refer. It seems that in a series of deposits like that 

 of the Bracklesham and Barton beds we have the best field for the 

 investigation of the great problem of the succession of species. We 

 have in these an extended series of beds in which the record seems 

 nearly perfect. It is true that we have occasionally physical breaks 

 in the sequence ; but still we have long intervals in which the 

 species change and no physical breaks can be detected. I would 

 suggest that a genus should be taken in hand, such as Voluta or 

 Pleurotoma, and that intermediate forms between species succeeding 

 each other in time should be sought out, not necessarily on the same 

 spot, but in beds of the same or intermediate age in other parts of 

 the area occupied by eocene deposits. 



I should iU repay the kindness of Mr. F. E. Edwards did I omit 

 to acknowledge the invaluable assistance I have received from him 

 towards naming the specimens in my collection, by the aid of which 

 I have been enabled to give the hsts of fossils from the various 

 localities. Mr. T. R. Jones has also helped me most materially 

 with respect to the Foraminifera, and likewise by pointing out 

 many references to the works of other geologists, who have preceded 

 me in this most interesting field of research. 



APPENDIX A. 



On the Correlation of the Fossiliferous Localities of the BracJclesham 

 Beds (descending). 



rSome portion of No. xix., White Cliff Bay. 

 I Coral-bed (No. 20) of Stokes Bay, Stubbington. 

 a. ^ Coral-bed and Shell-bed of Hunting Bridge, New Forest. 

 Pebble-bed (No. 4), with casts of shells, at High CHff. 

 (^Bed (No. 6), with casts of sheUs, Alum Bay. 



Nummulina variolaria bed (No. xvii.). White Cliff Bay. 

 N. variolaria bed (No. 22) (the "Clibs") and Mixen rocks 



of Selsoa. 

 N. variolaria bed (No. 1 6) of Stubbington.- 

 Shephcrd's Gutter Bed of Bramshaw, New Forest. 

 \ Three water Gutter Bod of Brook, New Forest. 



f Sand-rock (No. xvi.), White Cliff Bay. 

 Hard bed (No. 21), opposite Medmery Farm, Selsea. 

 ivcr-coloured clay (No. 15), Stubbington. 

 I Purplish sandy clay, beneath the Shepherd's Gutter Bed, 



t^ New Forest. 



h.^. 



•. V I 



* See Mallet's ' Earthquake Catalogue.' 



