BRITISH ISLES. 31 



The formations noticed are : — Chalk, Thanet Sands, Woolwich and 

 Reading Beds, London Clay, Valley Gravels. The fauna of the Chalk 

 is described, and compared with that of modern Tieep seas. Amongst 

 other points specially noticed are : — the boulders in the Chalk, the fauna 

 and fossil fruits of the London Clay. There is a table of strata showing 

 those present or absent near Croydon, and their equivalents elsewhere. 

 The appendix contains a note on the Croydon Bourne and sections of 

 the Croydon WeUs. W. T. 



Morris, Prof. J. On the Occurrence of Boring Mollusca in the 

 Oolitic Hocks. Geol. Mag. dec. 2, vol. ii. pp. 267-272. 



Describes a quarry of the Forest Marble near Cirencester : the per- 

 forations occur in nodules of claystone, which also show attached Ostrea, 

 Serpula, and FoJyzoa. The nodules are bored all round, and have 

 evidently been moved about since ; the overlying rocks are false- 

 bedded. References to and* extracts from publications in which similar 

 appearances have been noticed in the Oolites of England and France 

 are given, and remarks are made on the false-bedding. W. T. 



Mortimer, R. An Account of a Well-section in the Chalk at the 



north end of Driffield, East Yorkshire. Qmirt. Journ. Geol. Soc. 



vol. xxxi. pp. Ill, 112. 



The Chalk was traversed by vertical partings, the sides of which 



showed horizontal striae. Interstratified with the Chalk were thin layers 



of Fuller's earth, which the author regards as caused by temporary 



disturbances of the water interrupting the ordinary quiet organic 



" secretion " of the Chalk. Analyses of the Chalk and Fuller's earth 



(by T. Hodgson) are given. W. T. 



Nahanik [= G. H. Kinahan], Irish Salmon Rivers and their Geo- 

 logy — the Suir, the Barrow, and the ISfore. Land and Water, 

 Jan. 9. 



The valleys of the rivers are described, and also the geology of the 

 country they pass through. Tlie rivers all rise near together in the 

 centre of Ireland, and, after draining different areas, join into one 

 before reaching the sea at Hook Head. AU the valleys run across the 

 strike of the rocks ; and therefore rapids and falls might be expected, 

 especially while crossing the L. Silurian rocks of Waterford and Wex- 

 ford, in which are many interstratified folstones, eurytes, whinstone, 

 and other hard rocks. This, however, is not the case, as the rivers run 

 in fissures due to recent faults and shrinkage-fissures in the underlying 

 strata. The valleys are low seated, the Suir being tidal for 37 miles, 

 the Barrow for 32 miles, and the Nore for 31 miles, respectively, from 

 Hook Head. G. H. K. 



Newall, — . Note on a Well at Clifton Vicarage. Jtiep. Rughy 

 School Nat. Hist. Soc. for 1874, p. 51. 



Nicolson, A. The Isle of Skye. Good Words, vol. xvi. pp. 344- 



350, 384-392, 457-462, 561-568. 

 Contains some geological notes. 



