28 Parasitic Insects R. R. Askew 1971 Manual on Nearctic Diptera J. F. McAlpine et al. 1981 The British Mosquitoes J. F. Marshall 1938 D. A. SMITH GLIMPSES OF THE PAST (III) Extracts From the Diary of an Essex Naturalist made by Mark Hanson In 1986 I was fortunate enough to be put in contact with Mr. McKenzie Smith a local naturalist, who was active in the 1930's in the Epping Forest area. During the years 1932 to 1938 Mr. McKenzie Smith, now in his seventies and living in Whitehall Road, Woodford Green, kept notes of his observations mainly on bird—life in Epping Forest and widely in the Roding Valley., but particularly in the vicinity of Luxborough Lane and Chigwell Sewage Farm. The following entries have been extracted from the diaries and most have been chosen because they reflect some of the great changes that have taken place, particularly in bird populations, in the last fifty years. A number of records are referable to Chigwell Sewage Farm (the sewage farm just off Luxborough Lane, Chigwell) and, unless otherwise stated, all sewage farm records are referable to this site. Very occasionally I