THE HISTORICAL STAGE IN THE LEA VALLEY 107
This paper completes a series in which the Late Glacial
and Post-Glacial history of the Lea are discussed. It is now
possible to use the framework thus developed to study the
history in the valley of various groups of organism. The writer
proposes to undertake this work over the next few years.
The author is indebted to the owners of the various pits for
permission to make visits and to publish this account, to the
Keeper of the Department of Palaeontology, British Museum
(Natural History) for allowing access to material in his charge,
and to Mr. S. Hazzledine Warren for his usual co-operation.
REFERENCES
Hayward, J. F. 1957a. Certain abandoned Channels of
Pleistocene and Holocene age in the Lea
Valley, and their deposits. Proc. Geol.
Assoc. 67, 32.
1957b. The Nazeing Stage (Pleistocene) in
the Lea Valley. Essex Nat. 30, '29.
1958. The molluscan sequence in the Lea
Valley. Journ. Conchology. 24, 239.