LIST OF ILLUSTRATIONS. 
PLATES. 
I. Sketch Map of part of North Hertfordshire .. 
II. Section through Ashwell and Bygrave .. 
III. Sections of Hertfordshire Boulders. 
YI. Discostomatous Protozoa 
To face p. 
}> 
n 
33 
40 
47 
51 
53 
95 
YII. Evolution of Types on Ancient British Coins. Between 
pp. xxvi and xxvii. 
WOODCUTS. 
Ancient British Coins .p. xxxi 
General Section at Mr. Lines’ Brickyard (George’s 
Farm), near Rush Green, 1 mile E.S.E. of 
Hertford .. .. lxvii 
