Vol. 28, Part 2 March 1948 THE ESSEX NATURALIST being the Journal of the ESSEX FIELD CLUB Joint Editors : Frank W. Jane, Ph.D., D.Sc., F.L.S. C. Bignell Pratt, M.P.S., F.S.M.C. CONTENTS PAGE Toothill Windmill. By Paul Baker (with one plate)......... 51 Mycetozoa in Epping Forest, 1946-7. By Joseph Ross ...... 54 The Spiders of Essex. By J. E. Hull, M.A., D.Sc. (with one plate) ... 58 Pelosphaera rotans Lauterborn. By D. J. Scourfield, I.S.O., F.L.S., F.R.M.S......................... 64 Orthodontium gracile in Epping Forest. By Joseph Ross ...... 68 Coenagrion scitulum Rambur in Essex. By Edward B. Pinniger, F.R.E.S......................... 69 Southend Lepidoptera in 1947. By H. C.Huggins, F.R.E.S. ... 7i A Historic Handkerchief. By Percy Thompson, F.L.S....... 73 Notes and Observations (with one plate) ... ......... 75 The Essex Museum : A Further Gift of Bow Porcelain ...... 81 The Library : Recent Additions......... ......... 81 Book Notice ........................ 83 The Essex Field Club : Reports of Meetings............ 83 List of Members ........................ 96 Published by The Essex Field Club at the Essex Museum of Natural History, Romford Road, Stratford, London, E.15.