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fossils. S.E. of High Hill the brown ferrous sands are well 
seen coming from under the Galt of Soham, which has been 
bored for 450 feet without being pierced; near the base of the 
Galt nodules of phosphate of lime and fossils abounded. At Ely 
these beds are variable. At the Gallows Pits the rock is so 
calcareous as to split with a crystalline fracture. The old walls 
of the city are of a fine grit conglomerate with occasional nodules 
of phosphate of lime, casts of fossils, and bones still to be seen 
in the blocks; while the Cemetery is on sand, said by the 
gravedigger to be about 12 feet thick with indurated beds in 
the middle. In Roswell Hole the conglomerate rock was at the 
bottom and sand above; here from the rock were obtained about 
six species of mollusca. At Wilburton a phosphatic band with 
jaws of Edaphodon occurs near the top of the brown sands. 
At Haddenham the sands 30 feet thick rest on the upturned 
and eroded clay [Kimeridge]. In the middle were found three 
small phosphatic concretions. At Aldreth no concretions were 
seen. Mr Westrupp states that in dredging the Cam he finds 
the bottom to be a mixture of gravel and galt between Bottisham 
sluice and Swaffham sluice; and that at a place near Bottisham 
sluice called Calves Flat the bed of the river is a hard fer- 
ruginous bed with a hard bed below, mixed with gravel and 
galt. It is highly probable that these are the phosphate beds. 
Mr Westrupp also states that gravel exists under the whole of 
Isleham Fen*. 
At Downham Market the top of the Kimeridge clay contains 
small sand concretions and phosphatic casts of shells with green 
grains in them, resembling in species and preservation those 
from the sands at Wicken. 
At Hunstanton the phosphatic concretions are numerous but 
chiefly fragments of casts of Ammonites Deshaysii, and about 
* Since this paper was read the author has seen this phosphate bed under 
ferrous sands and graduating into the clay on which it rested at Impington. It 
appeared to be in situ. 
