170 
J. HOPKINSON"-—LIST OF WORKS 
120. Whitaker, W., W. H. Penning, and F. J. Bennett. The 
W. part of sheet 47 of the map of the Geological Survey. Scale 
1 inch to a mile. (Drift Edition published in 1884.) 
1882. 
121. De Range, C. E. The Water Supply of England and Wales; 
its Geology, underground circulation, surface distribution, and 
statistics. (River Lea, pp. 191-199. River Colne, pp. 200-203.) 
8vo. London. 
122. Fordham, H. G. Hinth Report of the Committee .... for 
the purpose of recording .... the Erratic Blocks of England, 
Wales, and Ireland .... By the Rev. H. W. Crosskey. Rep. 
Brit. Assoc, for 1881, p. 204. (Herts, by H. G. Fordham, pp. 207- 
217.) 
123. Harrison, W. J. Geology of the Counties of England .... 
(Herts, pp. 120-124.) 8vo. London. 
124. [Hopkinson, J.] Field Meeting, 15th May, 1880. Radlett. 
Trans. Herts Nat. Hist. Soc. vol. i, part 8, p. xxxiii. 
125. [Hopkinson, J.] Field Meeting, 12th June, 1880. Ashridge. 
Ib. p. xxxvi. 
126. [Hopkinson, J.] Field Meeting, 10th July, 1880. Cole 
Green, Woolmers, Essendon, and Hatfield Park. Ib. p. xxxviii. 
127. [Hopkinson, J.] Field Meeting, 7th May, 1881. The 
Bourne Valley, Boxmoor. Ib. p. lviii. 
128. Jordan, J. B. Stanford’s Geological Map of London, shewing 
Superficial Deposits. Scale 1 inch to a mile. 2nd Ed. (Herts in 
H.W. corner.) 
129. Whitaker, W., and J. Hopkinson. Excursion to Rick- 
mansworth. Proc. Geol. Assoc, vol. vii, Ho. 7, p. 397. Field 
Meeting, 17th June, 1882. Rickmansworth. Trans. Herts Nat. 
Hist. Soc. vol. ii, part 5, p. xxvii (1883). 
1883. 
130. Croft, R. B. Hotes on the River Lea below Hertford. 
Trans. Herts Nat. Hist. Soc. vol. ii, part 7, p. 243. (Geology, 
pp. 247, 248.) 
131. Elsden, J. V. The Agricultural Geology of Hertfordshire. 
Trans. Herts Nat. Hist. Soc. vol. ii, part 4, p. 145. 
132. [Fordham, H. G., and J. Hopkinson.] Field Meeting, 
18th July, 1882. Royston. Ib. part 5, p. xxx. 
133. Greg, R. P., and R. B. Croft. Hotes on the Upper Portion 
of the River Rib and its affluent the Quin. Ib. part 3, p. 126. 
(Geology, p. 129.) 
134. Hopkinson, J., [and Dr. J. Evans]. Excursion to Berkhamp- 
stead and Bourne End. Proc. Geol. Assoc, vol. viii, Ho. 3, p. 117. 
135. [Hopkinson, J.] Field Meeting, 27th May, 1882. Har- 
penden and Wheathampstead. Trans. Herts Nat. Hist. Soc. vol. 
ii, part 5, p. xxv. 
136. Puller, A. G. Hotes on the Ri/er Rib from Standon to its 
Junction with the Lea. Ib. part 3, p. 131. (Geology, pp. 134, 135.) 
