ANJSriVEKSAKY ADDRESS OF THE PRESIDENT. Iv 



Belemnitic forms being probably of generic importance. Another 

 new point furnished by this beautiful specimen is the existence 

 of beaks and acetabular hooks in the genus Belemnites, in which 

 they have never hitherto been found, although known to exist in 

 Belemnoteuthis. 



Another memoir is by Mr. Whitaker " On the Greology of 

 parts of Middlesex, Hertfordshire, Buckinghamshire, Berkshire, 

 and Surrey." It is intended to accompany and to illustrate sheet 

 7 of the Greological Survey of Grreat Britain. Embracing as it 

 does such a considerable area of the neighbourhood of the metro- 

 polis, it will have an interest for many who have not the leisure 

 to undertake distant excursions, but who may wish, nevertheless, 

 to be made to understand the geological phenomena which come 

 under their notice in the neighbourhood of their daily Avalks. 



Commencing with the Chalk, of which a useful though succinct 

 account is given, the author then proceeds to describe the diiferent 

 beds which constitute the Lower Eocene series. Lists of the fossils 

 are introduced whenever necessary, and numerous descriptive sec- 

 tions are given. Another chapter is devoted to the Middle Eocene 

 series, consisting of the Lower Bagshot sand ; and the remainder 

 of the memoir is devoted to the Postpliocene series, the different 

 elements of which, with their respective localities, are fully de- 

 scribed. This is a rather interesting point, as the author observes 

 that it is very rare in this district to find any two of these elements 

 at one place, so arranged that we can be sure of their relative age. 



Mr. Edward Hull also publishes a memoir giving an account of 

 the country around Oldham, including Manchester and its suburbs, 

 with an Appendix on the Fossils by Mr. Salter. The rocks 

 described in this memoir begin with the Limestone-shale under- 

 lying the Millstone-grit, over which are placed the Lower and 

 Tipper Coal-measures. Above them come the Permian rocks, 

 consisting of Lower Permian sandstone and Upper Permian 

 marls, and these are again overlain by the Pebble-beds or Con- 

 glomerate of the New Red Sandstone or Trias. 



No fossils are mentioned as occurring in this conglomerate ; but 

 as it is described as conformable to the underlying Permian, 

 M'ith an inclination of about 10° to the S.W., they may possibly 

 turn out to belong to the Permian series, like the sandstones 

 described by Sir li. I. Murchison at St. Abbs Head in Cumberland, 

 and then the Trias would be here altogether wanting. No other 

 sedimentary rocks, whether Secondaiy or Tertiary, occur here, and 

 the whole is overlain by Postpliocene boulder-clay and drift. 



Geological Map of England. — I must now congratulate you on 

 the completion of the ncAV edition of the Geological Map of 

 England, which you see exhibited before you. The name of Mr. 

 Greenough will ever be associated with this Avork ; for although 

 his map was to a large extent based upon that of his predecessor, 

 "William Smith, the acknowledged father of English geology, and 

 who deserves to be remembered as the first author of the geolo- 

 gical maps of England, yet it was owing to the liberality of Mr. 



