156 THE ESSEX NATURALIST
Notes on the Butterflies of Hawkswood
By D. Corke
(Biology Department, West Ham College of Technology)
These notes are the result of fairly regular observations on
butterflies in Hawkswood, a part of Epping Forest within the
parish of Chingford, carried out between 1952 and 1967. The
observations were made casually, on walks in the Forest, but since
the area is fairly small and was visited very frequently (rarely
less often than once a week) these observations are probably
sufficient to give a summary of what has happened to the butter-
fly populations of the area.
The study area is shown in the map below. Area 1 is woodland
dominated by Oak (Quercus spp.) and Hornbeam (Carpinus
betulus Linn.) with an undergrowth of Bramble (Rubus sp.).