Bibliographical Notices. 491 



geography of this county and the neighbouring counties, as being 

 distinctly referable to the geological structure ; 2, the investiga- 

 tions into the nature and history of the formations constituting the 

 promontory of Selsey ; 3, the origin and range of the old beach and 

 sea-line, now elevated many feet above high tide ; 4, the ancient 

 British gold coinage ; 5, the hill-forts, especially Cisbury and its 

 prehistoric manufactory of flint instruments ; 6, the discovery of a 

 palaeolithic flint weapon in the " coomb-rock " near Brighton ; 

 7, the Tertiary beds of Newhaven and of the Brighton neighbour- 

 hood ; 8, the series of strata recognized in the deep well at the 

 Warren Farm, so boldly conceived by Mr. Willett, perseveringly 

 continued and successfully finished ; 9, the structure of the Weal- 

 den area, the succession and nature of its strata, the origin and 

 formation of its wonderfully symmetrical river-valleys ; 10, the 

 history and results of the undertaking known as the Subwealden 

 Exploration, suggested by Mr. H. Willett for the determination of 

 the deep-seated geological structure of the south-east of England, 

 well told by Mr. Topley and illustrated by admirable sections ; 

 11, the explanation of several well-known features at Eastbourne, 

 Pevensey, Bexhill, and Hastings ; and, 12, the valuable record 

 (communicated by Mr. T. Ross) of the changes that have brought 

 about the silting-up of the ancient harbour of Hastings. The 

 Editor's explanation of the origin of flint nodules, as due to the 

 pseudomorphosis of chalk by silica, and his insisting on the theory 

 that the Wealden valleys are due to nearly symmetrical fissures and 

 other disturbances of the strata — a theory that found favour with 

 Martin and Hopkins, was contemned by others, and again supported 

 by later observers (Barrois, &c.) — are also new to the work. 



A judicious selection from the handsome plates published years 

 ago in Mantell's ' FossUs of the South Downs,' and a careful expla- 

 nation of the figures, form a portion of this handsome and well 

 illustrated volume. With these figures of the most important 

 typical Cretaceous fossils of Sussex, added to those given in the 

 other twenty-four plates of Chalk fossils originally drawn for Mr. 

 Dixon, the student has a comprehensive repertory of the organic 

 remains of the South-English Chalk and associated beds. Fifteen 

 plates of Tertiary fossils from Bracklesham (Bagshot series) and 

 Bognor (London Clay), numerous woodcuts, some whole pages of 

 sections, a vignette etching of the old Block-house at Brighton, and 

 a beautiful map of the South-east of England, with Sussex geologi- 

 cally coloured, adorn this elegantly printed work. A carefully con- 

 structed index and abundant cross-references enable the reader to 

 follow any subject throughout the several chapters, geographical, 

 geological, or palseontological, in which its notice or fuller treat- 

 ment may occur. The multitudinous species of organic remains 

 enumerated in the book can be readily studied by referring to the 

 numerous lists of specific names and their authorities ; and amongst 

 these catalogues, (1) those of the shells from the " Mud-deposit " 

 of Selsey, (2) those of the shells from Bracklesham and from Bognor, 



