Vol. 29, Part 3 1954 THE ESSEX NATURALIST being the Journal of the ESSEX FIELD CLUB Editor: C. BIGNELL PRATT. CONTENTS PAGE Concerning the Age of Things. Presidential Address by Laurence 8. Harley ... .................. ...... 129 The Trees and Woodlands of Essex. By C. H. A. Robson...... 142 A Survey and Comparison of the Natural and Inned Salt Marshes at Leigh-on-Sea, Essex. By Jean E. Myers ............ 155 " The Conglomerate Track." By S. Hazzledine Warren ...... 176 The Statistical Evidence for a Conglomerate Alignment in Essex. By E. A. Eridge......... ............... 178 The Herbaria of the Essex Field Club. By Bernard T. Ward ... 187 Notes on Plants ........................ 196 Mycetozoa in Epping Forest in 1952-53. By Joseph Boss ...... 197 Birds at North Fambridge in 1953. By Jack T. Friedlein...... 200 Notes on Birds........................... 202 Lepidoptera in South-east Essex in 1953. By H. C. Huggins ... 201 Lepidoptera in East Essex in 1953. By A. J. Dewick ...... 206 The Speckled Wood Butterfly in Essex. By the Editor ...... 207 Notes on Insects ........................ 209 Book Review ........................... 210 Obituary Notices ........................ 211 Report of Council for 1953..................... 214 Reports of Meetings ... ... ... ... ... ... ... ... 216 Published by The Essex Field Club at the Essex Museum of Natural History, Romford Road, Stratford, London, E.15.