ILLUSTKATIONS. 



PLATES. 



PACE 

 PAGE 



I. Section of the Blackwater Valley, Essex 18 



II. Stone Celt from the Neighbourhood of Chelmsford, Essex. . . 30 



III. Plan of Ambresbury Banks, Epping Forest 58 



IV. Imaginary Section through Eampart of a Camp. Section 



through Rampart of Ambresbury Banks 60 



V. Fragments of Pottery found in the Rampart of Ambresbury 



Banks 62 



VI. Map of the Rivers of Essex, and the Natural-History 



Provinces based on them 80 



Sand-pipes in the Chalk at Grays Thurrock, Essex xiv 



WOODCUTS. 



PAGE 



Vanessa Urticce of polycJiloros type 1 



Structure of larvae of Noctuse and Geometry 21 



Cecidomyia RamniciiU 121 



Ceuthorhynchus snlcicollis 122 



Ceciduinyia Trifolii '• 123 



Ulmarice 124 



Diastrophus Rtibi 124 



Rhodites Roses 125 



,, Eglanterice 125 



,, Rosarum 125 



Cecidomyia Rosarum 126 



Asplwndylia PimpinelUe 126 



Hormomyia Millefolii 127 



Urophora Canlui 128 



