Cover Illustration: The Ouse Washes near Sutton Gault, looking northeast
up the Old Bedford River (Peter Sell)
Contents of Volume 31 (1989)
Editorial Philip Oswald 2
The ephemeral pools of south Cambridgeshire (C.D. Preston) 2
The changing face of nature in Bassingbourn (1930s-1980s) (Peter
Sell) 12
Butterflies and moths in suburbia (Colin Smith) 19
Bookreviews: Grantchester Church and its Churchyards by S.M.
Walters (Francesca Greenoak) 27
Guide to the botanical gardens of Britain by M. Young (S.M.
Walters) 29
Frogbit Hydrocharis morsus-ranae at the Nene Washes in
1988 (Robert Payne) 31
Breeding water birds in Cambridgeshire in 1988 (Graham Easy)
32
The habitat of Selinum carvifolio in Cambridgeshire (Martin
O'Leary) 36
Year-by-year observations of Selinum carvifolio, Parnassia
palustris and other species on Sawston Hall Moor (Margaret
Meade) 43
A small nineteenth-century collection of Lepidoptera from Horningsea,
Cambridgeshire (R. Colin Welch and
J . N. Greatorex-Davies) 46
Nature conservation on the Devil's Ditch (Margaret Stanier)
48
Notes on the botany of the Girton road interchange, Cambridge
(Erica Swale) 50
A one-year record of acid rain in east Cambridgeshire (Wendy
Fagence) 54
Notes on birds in Hayley Wood (Peter Conder) 56
Spreading meadow-grass Poa subcaernlea Sm. (P.J.0. Trist)
57
Ferns at Wicken Fen (S.M. Walters) 61
Vascular plant records (G. Crompton) 62
Bryophyte records (C.D. Preston and H.L.K. Whitehouse) 65
Weather notes for Cambridgeshire 1988 (J.W. Clarke) 67
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