On the Correlation of the Bournemouth Beds. 393 



sils occur in some of the beds, such as Dicerocardium, Megcdodon, and 

 Nerincea. In the western part of the Salt range conglomerates 

 composed of great blocks are regarded by the author as evidence of 

 proximity of land. The Jurassic deposits are local in their distri- 

 bution, and consist of shales, sandstones, and limestones, containing 

 abundant fossils, such as Belemnites, Ammonites, and Saurians. A 

 dark limestone contains also Gryphcece and Trigonice. The Creta- 

 ceous deposits, when present, are conformable to the Carboniferous ; 

 they are variable in thickness and fossil contents, and are not re- 

 cognizable near Attock between the Jurassic and jSTummulitic 

 groups. Further east a group, supposed to be Cretaceous, includes 

 clays with boulders of crystalline rock, which the author regards 

 as derived from land to the south. One of these boulders presented 

 glacial striae. The Eocene rocks are generally limestones, and 

 lie conformably upon the subjacent formations. The Xummulitic 

 series of the Salt range includes gypseous and coaly shales. The 

 salt beds sometimes attain a thickness of over 1000 feet. The Mio- 

 cene and Pliocene deposits are of immense thickness, and contain 

 only fossils of terrestrial and freshwater origin, so that the deposits 

 were formed in lakes and inland seas. The Tertiary epoch closed 

 with the elevation of the Himalayas and Salt range, which was 

 followed by a long period of change, during which various deposits 

 were produced, some including great quantities of erratics, which, 

 however, the author believes were brought to their present position 

 rather by floating ice than by the extension of glaciers. 



2. " Description and Correlation of the Bournemouth Beds. — 

 Part I. Upper or Marine Series." By J. Starkie Gardner, Esq., 

 P.G.S. 



The author stated that nothing had been written on this subject 

 since Prof. Prestwich's paper, in which the beds at Hengistbury 

 were described as of the Barton series. No attempt had hitherto 

 been made to correlate the beds at Alum Bay or Whitecliff Bay with 

 those of the mainland ; and no reference was to be found anywhere 

 to tbe origin and sequence of the beds between Hengistbury Head 

 and Bournemouth, or to their contained fossils. He bad now corre- 

 lated these bed for bed with the strata at Alum Bay, and found 

 that there is a sequence, and that the Hengistbury beds are higher 

 than those of Bournemouth and do not reappear on the coast. They 

 are all of marine origin, and were deposited by a sea advancing from 

 the south, as is shown by the slope of the shingle beds and the lenti- 

 cular patches of clay which mark old channels parallel to tbe former 

 shore and at right angles to the present cliff-line. They contain 

 numerous fossils — fruits, leaves, Mollusca, and Crustacea — the fruits 

 resembling those of Sheppey and forming a group of similar cha- 

 racter. The Mollusca are of Bracklesham type ; and the fossils in- 

 clude three genera of Bryozoa, two of which are new to the Eocene. 

 Tbe Crustacea have not yet been examined. 



The author comes to the conclusion that the whole group is 

 contemporaneous with the Bracklesham beds, and is not of Lower- 



