Norwich Crag to the Westleton beds at the Thorpe pit. The latter there put on the character of a coarse ferruginous shingle passing under the Boulder-clay series higher up the hill; but that is not seen in this pit. The shells of this ferruginous bed (x 5) consist, as far as they have been determined by Mr. Reeve, of: —
Cardium edule.
Mytilus edulis.
Mya arenaria.
Tellina obliqua.
Modiola (large sp.).
Littorina littorea.
Purpura lapillus.
There is, however, nearer Norwich, a section which, although wanting in the confirmation afforded by organic remains; shows in a very interesting manner the superposition of the whole series, and the relation of different members of the Crag and glacial beds in this district (fig. 39).
Fig. 39. — Pit at Bishopford Bridge, Norwich.
feet.
7. Coarse ochreous loamy roughly stratified flint-gravel 25
6. Brown Boulder-clay (lower division) 15
5. White sands and flint-shingle (Westleton beds) 20
3. An irregular seam of grey clay (Chillesford Clay?) 0 to 1
3' (?) & 2'. White and ochreous sands, and flint-shingle and gravel. Small patches of shells (Norwich Crag) found occasionally in the lower part, and large flints at the base 12
