OP TBLE TJPPEE CRETACEOUS IN WEST SPPPOLE AXD XORPOLK:. 555 



On the north, side of the Brandon River, near Hock wold and 

 Feltwell, grey chalk is again above the Fen-level, but none of the 

 pits expose anything which we could identify as Totternhoe Stone. 

 Grey blocky chalk in which we could not find any fossils, but which 

 must be between this horizon and the Melbourn Rock, is seen in a 

 quarry by the main road two furlongs north of Hockwold. To the 

 westward, near Hockwold Grange, there is hard blocky grey chalk or 

 " crunch," which appears to belong to the upper part of the Chalk- 

 marl. A weathered exposure of this grey chalk occurs in an old pit 

 near the Grange, Ammonites varians and Inoceramiis latus being here 

 as abundant as in the large quarries near Reach. At a small lime- 

 kiln by the road, three furlongs north-east of the Grange, we saw 

 about 20 feet of blocky grey chalk, which more resembled that above 

 the Totternhoe Stone at Cherry Hinton than any part of the Chalk- 

 marl, and the only fossil found was Ammonites rhotomagensis, which 

 is not common in Chalk-marl ; still the distance between the two 

 exposures is so small, and the difference of level so slight, that we 

 believe the latter to be still in the llarl. 



There is another small pit by the roadside, north of White Dyke, 

 and in the lower part of this are some hard dark grey beds with 

 lumpy irregular surfaces, which greatly resemble the beds overlying 

 the Totternhoe Stone at Isleham (see p. 554), but we afterwards 

 found that similar beds appeared in the Chalk-marl. 



South of Feltwell St. Nicholas, and near the windmill marked on 

 the map, is a quarry from the face of which adits or tunnels have 

 been driven, and the following section is exposed : — 



feet. 



4. Chalky soil 1 



3. Greyish-white chalk, rather hard 10 



2. Hard grey chalk in thin irregular beds mottled 



with darker grey pipings, about 5 



1. Softer and lighter blocky chalk, seen for 10 



26 



The hard beds are like those at White Dyke, but the chalk below 

 is certainly not Totternhoe Stone ; it resembles the Chalk-marl of 

 Hockwold Grange, and the comparison is confirmed by microscopical 

 examination. The caves are excavated in this blocky chalk, the 

 lower part of the hard beds being also removed, leaving the upper 

 part of the latter to form the roof. If these grey beds are the 

 same as those of White Dyke, we must infer the existence of a 

 fault to account for their position at Feltwell on a higher level and 

 more than a mile eastward of the former place. 



Small pits exist near the edge of the fen north-west of Felt- 

 well, and near Methwold Hithe, but do not expose anything of 

 interest. " 



In the large quarries at Stoke Ferry we were able to identify the 

 representative of the Totternhoe Stone, and the underlying beds 

 must therefore be referable to the Chalk-marl. Of these 22 feet 

 are exposed, and they consist of hard blocky dull white chalk, which 



