1873.] SHARP OOLITES OF NORTHAMPTONSHIRE. 225 



its glaciation to any general ice-cap radiating from the Pole. He 

 thought that the ice-sheet was general over the northern part of the 

 British Isles, and on a much larger scale than was usually admitted — 

 and that one of the obstacles to its recognition was the later glacia- 

 tion along the valleys, which was more conspicuous than the older 

 traces, and another the difficulty which some people had in ignoring 

 the present coast-line. 



Mr. J. Cllfton "Ward stated that in the northern parts of the 

 Lake district he had found that the direction of the ice-flow must 

 have been mainly to the north. 



The Author, in reply, remarked that in Greenland, whatever 

 might theoretically be the case, ice is pushed for scores or hun- 

 dreds of miles down into the sea, until it gets out of its depth, and 

 eventually floats off as icebergs. He pointed out the correspondence 

 of the main valleys of Ireland with glaciations on the surface of 

 rocks from Scotland, and exhibited specimens and rubbings in illus- 

 tration of various characters of weathering and wear from different 

 natural causes. 



February 5, 1873. 



Thomas Checkley, Esq., 70 Lichfield Street, Walsall ; John Mac- 

 kenzie, Esq., Government Examiner of Coal-fields for New South 

 Wales, Newcastle, N. S. "W. ; John Ollenshaw Middleton, Esq., 1 

 Ebenezer Terrace, Plumstead Common, S.E. ; Walter Rowley, Esq., 

 74 Albion Street, Leeds ; and George "William Shrubsole, Esq., Vic- 

 toria Road, Chester, were elected Fellows of the Society. 



The following communication was read : — 



The Oolites of Northamptonshire. By Samuel Sharp, Esq., 

 F.S.A., F.G.S. Part II. 



[Plates IX. & X.] 



Introduction. 



In accordance with the intimation given in my First Part of a 

 Memoir upon the Oolites of Northamptonshire, I now beg to offer 

 the Second Part of that Memoir. 



The limited district of which I treated on the former occasion 

 afforded facilities for its division into four areas, and for describing 

 the beds and the order of their superposition in each ; and thus, by 

 a comparison of the beds and their sequence in the several areas, for 

 arriving at a right understanding as to the geology of the whole 

 district. 



The field to which I now direct attention is much more extended, 

 and is of a character that will not allow of such a systematic 

 division. I hope, nevertheless, to be able to convey clearly that 

 which I have to communicate. 



The main feature of my First Part was the description and con- 

 vol. xxix. — part i. Q 



