INDEX i INDEX TO VOLUME 30 A Albino Frogs and Slow-worm in Essex ..................... 280, 288 Alga, (Bangia) from River Lee ....................................... 74 Alga, (Colacium) in the River Lee .............................. 60 Alga, (Vacuolaria) recorded....................................... 284 Algal flora of the River Lee .......................................... 173 Allen, Benjamin. Grave visited ................................. 83 Alvin, K. L. Lichens of Hatfield Forest..................... 167 Alvin, K. L. Lichens of Skipper's Island ..................... 330 Ambresbury Banks. 1956 Excavation ........................... 43 Ambresbury Banks, excavations at .............................. 225 Amphibians in Epping Forest ....................................... 179 Amphipod, Corophium, ecology of ................................. 299 Amphipod, Eucrangonyx, recorded ................................. 199 Ashdon, visited ......................................................... 79 Astagalus odoratus, recorded ....................................... 164 Audley End, visited ...................................................... 221 B Badger in Essex......................................................... 272 Bangia atropurpurea from River Lee .............................. 74 Belcher, J. H. Exhibit of Bangia atropurpurea ............... 74 Belcher, J. H., and Swale, E. M. F. Colacium epiphyticum in the River Lee ................................................... 60 Belcher, J. H., Diatoms of the River Lee ..................... 174 Benfleet (South) creek, ecological study ........................ 291 Birds: dawn-chorus in Essex ....................................... 268 Birds in an Ilford Garden .......................................... 67 Bird notes from North Fambridge, 1956 ........................ 63 Bird notes from North Fambridge, 1957 ....................... 125 Bird notes from North Fambridge, 1958 ........................ 189 Birds on the Stour ...................................................... 324 Bird Pellets, extraction of bones from ........................... 129 Birkbeck Geographers Association, Changes in Land use on Brightlingsea Island since 1934 ................................. 113 Black Notley Churchyard, mosses at .............................. 62 Black Notley, visited................................................ 82 Blake Hall, Ongar, visited .......................................... 287 Blake's wood, visited ................................................ 286 Blezard, R. G. Further subsidences near Stifford ............ 309 Book Reviews ............................................. 142, 289, 342 Botanical Group, 1960 Report .................................... 340