MU. CLEMENT IiEID ON EAST NORFOLK GEOLOGY. 
297 
are not things that could be washed from one stratum into 
another. It is interesting to observe among them the Lithoglyphus , 
a southern species so rare that the only other locality for it is the 
Wey bourn Crag of East Kunton. I have already suggested that 
the peculiar association of northern marine with southern land and 
freshwater animals is perfectly accounted for by the geographical 
conditions which held at the close of the Pliocene Period. The 
sea was only open to the north, the land was only connected with 
the south.* A noticeable point about this well is the abundance 
of the land and freshwater species in the Crag. When we travel 
from Eunton south-eastward to North Walsham and Mundesley, 
wo appear to bo ascending the Ancient estuary in which the 
Wey bourn Crag and Chillesford Clay were deposited. 
The third Well to which I desire to draw attention is a trial- 
boring at Metton, south-west of Cromer — a district in which 
nothing has been known as to the extent of the Crag or the depth 
to the Chalk. This also yields abundance of good water. I am 
indebted to Mr. J. C. Mellis for the samples on which the 
following short note is founded : — 
Glacial. 
Forest-bed. 
Wkybourn 
Crag and 
Chillesford 
Clay. 
METTON. Surface 118 feet above O.D. 
Soil ... 
(-Gravel 
< Boulder Clay 
Sand and boulder clay 
/- Coarse-grained blowing sand, pebbles, 
< green lliuts, and shells, Cardium edule 
C Tellina balthica 
Fine running sand and stones. Littorina, 
Cardium edule, Corbula, My t Hus 
cula Cobboldiee, Phola.s, Tellina bal/b 
Running sand with veins of fine micaceous 
clay and pebbles 
Shells and green-coated flints. Cardium 
edule, Cyprina islandica, Leda, Mya, 
Nucula Cobboldix, Tellina balthica, 
T. obliqua , Littorina liftorea ... 
Chalk 
Thickness. Depth. 
f orina , 
i, An- i 
r/fbica ' 
feet. 
1 
feet. 
1 
5 
6 
24 
30 
20 
50 
11 
61 
10 
71 
34 
105 
1 
106 
* See “Geology of Cromer” and 
Mem. Geol. Survey. 
Pliocene Deposits of Britain.” 
