352 MR. F. W. HAEMER OX THE LEXHAM BEDS [Aug. 1 89 8, 



2. That the Lenham Beds had probably been upheaved, consoli- 



dated, and exposed to denudation before the deposition of the 

 Coralline Crag, and may have been, as formerly suggested 

 by Prof. E,ay Lankester, the source from which the box- 

 stones found at the base of the Suffolk Crag have been 

 derived. These boxstones contain a fauna, not identical 

 with, but possessing the same general character as that of 

 Lenham, that is, an admixture of distinctive Miocene and 

 Coralline Crag species. 



3. That in the interval between the deposition of the Lenham 



Beds and the Coralline Crag the Crag sea retired, in conse- 

 quence of the upheaval of the southern part of the area, to 

 the north, as it did also in Belgium towards the close of the 

 Diestien period. 



4. That the Lenham Beds are most nearly, though not exactly, 



represented by the zone a Terebratula gi^andis of Belgiuva., 

 and possibly by some fossiliferous deposits recently discovered 

 at Waenrode, near Diest, while the Coralline Crag corresponds 

 very closely with the Belgian zone a Isocardia cor. 



5. That the Coralline Crag between Sutton and Aldeburgh does 



not rest upon the horizontal surface of the London Clay, as 

 supposed by Prestwich, it being shown by borings that the 

 junction between the two formations dips regularly towards 

 the north-north-east. 

 .That no satisfactory evidence, whether stratigraphical or 

 palaeontological, is forthcoming to show that any divisions 

 to be observed in the Coralline Crag at Sutton are persistent 

 at other localities in the formation. 



7. That none of the supposed zones in the Coralline Crag at 



Sutton have been shown to be characterized by the first 

 appearance in the Crag basin, or by the disappearance from 

 it, of any species of mollusca or foraminifera. On the 

 contrary, that the forms which have been enumerated as 

 specially distinctive of certain horizons are found also in 

 other parts of the Coralline, and often in the Eed Crag too. 



8. That no great subsidence of the Crag area during the older 



Pliocene period, as believed by Prestwich, took place. 

 Such a subsidence must have caused the submergence of 

 districts adjoining it either in this country or on the Continent, 

 and for this no evidence exists. 



9. That neither the fauna of the Coralline Crag nor the character 



of the sediment composing it supplies any indication of deep- 

 sea conditions, the sediment consisting almost entirely of the 

 drifted remains of dead mollusca and pol5^zoa, or of calcareous 

 matter derived from their decomposition, with reefs of living 

 polyzoa in places, and differing from the contemporaneous 

 Isocardia cor-beds of Belgium, which represent an undisturbed 

 sea- bottom, with the shells in situ as they lived. 



10. That there is no evidence of any great changes of climate 



during the Coralline Crag period : the waterworn block of 



