310 HARMER : FIELD EXCURSION TO CROMER, ETC. 
of a morainic character, accumulated during the retreat or melt- 
ing of the Upper Glacial ice. Coarse gravels of similar character 
occupy the liigh land to the south of Cromer and Sheringham. 
I formerly regarded these as equivalent to the Middle Glacial 
sands of Suffolk, and they are so shown in the map published 
by Wood and myself in 1872.* I now think this was an error, 
and that they bear the same relation to the Contorted Drift, 
that the gravels of Household Heath do to the Chalky Boulder- 
clay.f 
A visit was afterwards paid to the Norwich Crag pit, at 
Thorpe, known to Samuel Woodward and the East Anglian 
geologists at the beginning of last century. The fossiliferous 
Crag sands are here overlain by pebbly gravels, as in the sections 
previously alluded to, and rest on the undisturbed surface of 
the Chalk. 
The Lower Glacial clays and the Middle Glacial sands occur 
on higher ground immediately above this pit, in their usual 
sequence, as shown in the section, Fig. 1. 
At another pit, however, below the first-named, the Chalky 
Boulder-clay has ploughed its way down to the Chalk, disturbing 
it and the overlying Crag beds, while still lower, nearer the 
bottom of the valley, it rests on the marly and glaciated surface 
of the former. 
Up to this time the attention of the party had been principally 
directed to the Lower Glacial deposits, as to the connection of 
which with the North Sea ice there seems to be little doubt. 
The two following days were to be given to the district to the 
south of Norwich, the Upper Glacial deposits of which are, on 
the contrary, in the writer's opinion, the product of an inland 
ice stream. 
On the morning of Monday, July 13th, the geological party 
took train for Lowestoft, and at a large excavation at Pakefield, 
a mile or two south of that town, made a further acquaintance 
with the Chalky Boulder-clay, the most important as it has been 
perhaps the least studied of the Glacial beds of East Anglia. 
* Palseontographical Soc. Supplement to the Crag Mollusca, 1872. 
1 1 hope to give my reasons for this view in a future paper. 
