286 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [Feb. 5, 



Scarboro', and embraces (as indicated by the occurrence of Am- 

 monites Murchisonce, Sow.) lower beds of tbe south-west. 



The Lower Estuarine Series probably tallies with the Lower Plant 

 Shale of Yorkshire, but is not represented in the south-west. 



The upper portion of the Ferruginous Beds has representatives in 

 the Glaizedale beds and the Dogger of Yorkshire, and in the Am- 

 monites-Murchisonce zone of Cleve Hill, &c. 



The lower portion of the Ferruginous Beds (as indicated respec- 

 tively by the presence of Am. opalinus, Rein., and of Am. insignis, 

 Schubler) is probably nearly equivalent to the Am.-opalinus zone of 

 Dr. Wright, and to the Midford sand. 



I must not omit to acknowledge the information I have so largely 

 derived from, and which on all occasions has been so freely given by, 

 Mr. Judd, and the great aid which his remarkable Map, sheet 64, 

 has afforded me in revising the rough draft of this Memoir. I must 

 also warmly thank him for the assistance he has rendered me in the 

 preparation of my Map and Diagrams. 



My warm thanks are also due to Mr. Etheridge, F.B.S., for the 

 time, great labour, and patience he has bestowed in examining my 

 multitude of fossils, in revising and in many cases correcting my 

 identifications, and in determining those of fossils which were beyond 

 my reach ; enabling me to construct the appended Comparative 

 Tables of the organic contents of the several formations. 



The preparation of this Memoir has not been unattended with 

 labour upon my part ; and the data upon which it is founded have 

 been gathered during many years' acquaintance with, and observa- 

 tions in, the districts to which it refers. If I shall have contributed 

 my quota to a knowledge of the beds I have described and of the 

 geology of the county I have traversed, I shall be satisfied with the 

 result. 



The whole of the fossils from the neighbourhood of Northampton 

 which I exhibited on the last occasion were collected by me. A 

 considerable proportion of those which illustrate this my Second Part 

 are also of my collection ; some were jointly collected by Mr. Bentley 

 and myself, some by Mr. Bentley alone (notably those from Morcot 

 and Denton), and a few by the late Dr. Porter of Peterboro'. 



The ear probably may have wearied in listening to my lengthy and 

 somewhat dry exposition ; but the eye, meanwhile, may have rested 

 satisfactorily on the fossils which, fortunately, I have been enabled 

 to exhibit— fossils which are the evidence of the richness of the 

 fauna of the periods and of the areas to which I have directed 

 attention. 



Exalted personages attend at Court on ceremonial occasions, 

 decorated with the respective stars of their several orders. The 

 distinguished geological entities — the Lincolnshire Limestone and 

 the Northampton Sand — have appeared at the Court of this Society, 

 in like manner decorated with the Astropecten and the Stellaster, 

 the respective and characteristic " stars " — the Astrum and the 

 Stella — of those formations. 



