330 Mr. R. C. Taylor on the Geological Features 



west boundary, in both counties, is irregularly defined, amidst 

 the diluvial clays and the interruptions of older formations. 



Viewing all the circumstances, the general agreement of the 

 organic remains, the evident connection of the main Suffolk 

 portion with that on the Norfolk coast, and in various parts 

 in the interior, I am unable to draw any other inference than 

 that they are parts of one contemporaneous formation, from 

 whence there appears no adequate reason for excepting the 

 Norwich extremity. 



We have seen that, while constantly retaining some charac- 

 teristic features, this formation exhibits rapid and frequent 

 fluctuations ; that no neighbouring portions are precisely alike; 

 that at every hundred yards it presents novelty of arrange- 

 ment ; m structure varying from fine sand to coarse gravel or 

 ferruginous conglomerates ; in thickness, from a few inches to 

 fifty feet ; in the presence or absence of fossil substances, and 

 in the nature of those accompaniments. In the eastern valleys 

 the proofs do certainly appear in sufficient abundance to esta- 

 blish their geological conformity with more distant portions 

 of the district. 



With this conviction, can I hesitate between admitting a 

 system opposed to these facts, and apparently derived from 

 the inspection of a few excavations near Norwich, or follow- 

 ing the guidance of a judgement formed from an investigation 

 extending over five hundred square miles ? 



With regard to the orthography of Heringfleet, I would 

 only add that I find it Herlingfleet more than thirty times in 

 various ancient records besides Domesday Book : and that 

 many inland towns have their names compounded of Hering, 

 Haring, and Herling: also that the word Fleet signifies a 

 river or watercourse (which is its present use in the Norfolk 

 marshes) as well as an £Estuary. 



A recent opportunity of examination has strengthened the 

 opinion that the large bouldered fragments of primitive rocks 

 on the coast are derived from the Norfolk diluvium. They 

 are not unfrequently seen in pits or upon the surface many 

 miles from the sea, particularly in the neighbourhood of North 

 Walsham and Aylsham. The circumstance is referred to 

 chiefly, because I am quoted, perhaps inadvertently, as con- 

 ceiving these rounded masses to be drifted to our shores by 

 currents- 

 Mr. Robberds's unabating adherence to his views of the 

 marine exuviae have placed him in a dilemma. In arranging 

 his proofs of the former altitude of the sea, the most prominent, 



the 



