148 



Stour ; the nodules are very numerous and found only with the 

 shells. Let us hope that the interest excited by these notices may 

 lead some competent naturalist to undertake a detailed examination 

 of the " Crag," our imperfect acquaintance with which, again and 

 again pointed out from this Chair, continues to be what I may justly 

 call one of the Opprobria of English Geology, 



The changes which have taken place in the boundaries of the 

 land and sea on the north-eastern coast of Kent have been brought 

 under our notice by Mr. Richardson. 



Mr. Wetherell iias transmitted to us a detailed account of a Well 

 recently sunk on the south side of Hampstead 3 its depth is 330 feet; 

 under 285 feet of clay was found a rock five feet thick, which in ex- 

 ternal character and fossil contents agrees with the Bognor, and 

 rests on plastic clay. At the depth of 160 feet specimens were 

 brought up of what would be called in Sheppy Island fossil fruits: 

 the local distribution of these remarkable bodies is very limited. 

 From the examination of Mr. Konig, it would appear that a few only 

 are of vegetable origin. By far the greater part belong to a distinct 

 class, which, in Mr. Konig's new division of the natural order of 

 Polypi, are distinguished bj' the appropriate name of Carpomorphi. 

 Mr. Rofe has found in the neighbourhood of Reading the Bognor 

 rock, occupying the same position which Mr. Wetherell assigns to 

 it at Hampstead. It is strange that in a quarry of which so many 

 sections have been given, this rock should have remained so long 

 unnoticed. Mr. Rofe has also observed, that in the wells at Reading 

 the level of the water depends not on the Kennet which is the nearest 

 river and flows over tenacious clay, but on the more distant Thames 

 which flows over gravel resting upon chalk. 



M. Boue has recently pronounced the plastic clay formation 

 destitute of fossils, but it certainly does contain them in England. 



Mr. Woodbine Parish has detected chalk in a part of the Sussex 

 coast, where its existence had not been before observed. He has 

 traced it from Felpham to the distance of about a mile ; it runs in 

 the direction of Middleton, where chalk marl has been obtained at 

 low water. 



Dr. Mitchell has pointed out to us in what respect the chalk of 

 the North of England differs from that of the South. The difference 

 consists in its greater hardness, its occasional redness, its well de- 

 fined stratification, the absence of flint nodules in its upper portion, 

 and the continuity of layers of flint in its lower; in many of these 

 characters it resembles the chalk of Antrim. 



The occurrence of Hippurites in the chalk of SusseJi appears to 

 require confirmation. 



A well recently sunk at Diss in Norfolk, after penetrating two 

 beds of clay and sand, the aggregate thickness of which amounted 

 to 100 feet, penetrated through the great body of the chalk, which 

 proved to be 500 feet in thickness; the tools passed afterwards 

 through five feet of sand, when water flowed in, and rose to within 

 47 feet of the surface. Mr. Taylor, our Treasurer, to whom we are 



