viii Illustrations.
PAGE
Pointed implements and scraper...... 128
Ovate implement......... 133
Fabricator........... 134
Anvil-stone.......... 135
Quartzite Hammer-stone ........................ 136
Plain side of an artificial flake....... 137
Three Neolithic Celts, found near Temple Mills, Essex . . 146
Vertical sections of long- and short-styled Primrose . . . 151
Map of part of N.W. Essex, showing districts occupied by
Primula elatior......... 174
Abnormally large umbel of P. elatior..... 183
Plant of P. elatior, showing peculiarities usually connected with
"solitary" flowers........ 189
Conjoined flakes from Loughton Camp.....224, 225
Celt found in Loughton Camp . . . . . . . 226
Section of strata between Chigwell Row and Waltham . . 232
Section at Oakhill Quarry, Epping Forest..... 235
Section showing relative position of the Oakhill Quarry and
Brickfield.......... 236
Chipped and partly polished Celt found at Enfield . . . xv
The Rotifer Parasite on Vaucheria...... xlvi
Thomas's Vivarium......... l
Fairy Ring Fungus ......... lxx
Fairy Ring. The ground partly shown in section . . . lxxi
Diagrams illustrating various forms of inflorescence . . . lxxxviii