Correspondence. 375 



and more than twenty miles from it in a direct line, is visible across 

 a comparatively low country. I am not aware of any point inland, 

 equally distant, from which it can be in the same manner seen. 

 Other similar cases could be given. A reference to the Ordnance 

 maps will show that the only line of hills which presents the appear- 

 ance of an old coast line, at a higher level than the cliffs, is that 

 which runs due west from Cromer ; but this is distinctly intersected 

 by the present coast line at the Lighthouse Hill, and certainly, the 

 beds under discussion do not show there any signs of disappearing. 

 From this point to Hasbro' the country very often slopes inland from 

 the cliffs, and in a southerly direction is comparatively flat. 



The rapid and unceasing encroachment of the sea along the Norfolk 

 coast should also be remembered. Mr. Grunn gives an instance where 

 ninety yards of the cliff have been swept away in thirty-five years ; 

 and I do not know any reason why this may not have been going on 

 at a more or less rapid rate, perhaps from the very commencement 

 of the present period. It will be thus seen that the present coast- 

 line is a purely accidental one, and cut across what may have been 

 once almost the centre of the county. 



A very satisfactory reason can be given for the absence of the 

 Boulder-clay (upper drift) from the coast section between Hasbro' 

 and Weybourne ; and that is, it has been completely denuded from 

 the northern part of the county, as shown in Mr. Wood's map. 



I am not aware of a single outline existing north of a line joining 

 Hasbro', North Walsham, and Holt. I ought to say that Mr. Gunn 

 thinks the Upper Drift does appear in the cliff at Hasbro'. I am 

 sorry that I am unable to agree with him in this, but if it does occur 

 there, it settles the question. 



I am, yours truly, 



r. W. Haemer. 



Heigham Grove, Norwich, 



June 4, 1867. 



To the Editor of the Geological Magazine. 



Sir, — All I need say in reference to Mr. Maw's remarks is, to 

 suggest that he give some sections drawn from his supposed high 

 level Boulder-clay to that on the coast. I do not mean a hypothetical 

 section like that at page 98, of vol. iv., but actual sections drawn to 

 not less than half the horizontal scale of the Ordnance map (half-inch 

 to the mile), and showing all the places marked on that majD along the 

 line taken. To have any value at all, such sections should show every 

 bed, from the Crag upwards, that may come to the surface en route. 

 Of these sections, two at least would be required : one from Norwich 

 to some part of the coast section between Hasboro' and Weybourne ; 

 and another from Norwich to the Boulder-clay of Pakefield and 

 Gorton cliffs. 



I hope that Mr. Taylor may succeed in obtaining recognizable 

 specimens of shells from the Middle Glacial beds, so as to afford the 

 means of comparison with those obtained from Macclesfield ; for 

 although I have examined hundreds of sections in this formation, 



