ON THE GEOLOGY OE HERTFORDSHIRE. 
93 
176. Whitaker, W. Discussion on papers by W. Fox and J. W. 
Grover (Nos. 167 and 168). Proc. Inst. Civ. Eng., vol. xc, p. 52 
(Bushey, pp. 56-57). 
177. Woodward, H. B. The Geology of England and Wales. 
2nd ed. 8vo. London. (Herts, pp. 412, 431, and Appendix i.) 
1888. 
178. Bolton, Colonel Sir F. London Water Supply. New ed. 
by P. A. Scratchley. 8vo. London. (The New Liver, pp. 62-72.) 
179. Bonney, Prof. T. G. Note on the Structure of the Ightham 
Stone. Geol. Mag., dec. iii, vol. v, no. 7, pp. 297-300. (Herts 
puddingstone, p. 300.) 
180. Bookey, R. H. Geological Jottings. Herts Constitutional 
Mag., vol. i, pp. 300-303 (Herts). 
181. Cameron, A. C. G. Hertfordshire Subsidences [in the 
Chalk]. Geol. Mag., dec. iii, vol. v, no. 1, pp. 24-26. 
182. Fordham, H. G. A Record of Water-level in a deep Chalk 
Well at Barley, Herts, 1864-1886. Trans. Herts Nat. Hist. Soc., 
vol. v, pt. 4, pp. 20-22, pi. i. 
183. Harris, G. F. The Water Supply of the Metropolis. 
Proc. Soc. Amateur Geologists, vol. i, no. 3, pp. 21-23. (Analysis 
of Lea water, p. 22 ; sections, Cheshunt and Ware, p. 23.) 
184. Holmes, T. Y. The Subterranean Geology of South-eastern 
England. Essex Naturalist, vol. ii, pp. 138-158. (Herts, 
pp. 148-156.) 
185. [Hopkinson, J.] Field Meeting .... Hitchin. Trans. 
Herts Nat. Hist. Soc., vol. iv, pt. 8, pp. xxx-xxxii. 
186. Hopkinson, J. Excursion to Rickmans worth. Proc. Geol. 
Assoc., vol. x, no. 9, pp. 499-501. Field Meeting .... Rick- 
mansworth and Chorleywood. Trans. Herts Nat. Hist. Soc., vol. v, 
pt. 8 (1890), pp. xxvi-xxvii. 
1889. 
187. Denton, J. B. On the Replenishment of the Underground 
Waters of the Permeable Formations of England. Pep. Brit. Assoc. 
for 1888, pp. 797-798 (Chalk basins of Thames and Lea). 
188. Hicks, Dr. H. Pre-historic Man in Britain. Trans. Herts 
Nat. Hist. Soc., vol. v, pt. 5, pp. 147-154. (Geol. Herts, p. 150.) 
189. Hopkinson, J. Rambles with the Herts Field Club. 
From Berkhamsted to Aldbury. Herts Constitutional Mag., vol. ii, 
pp. 364-367. (Geology, pp. 366-367.) 
190. Hopkinson, J. The Geology of London. Herts Con¬ 
stitutional Mag., vol. iii, pp. 235-240. (Herts, p. 238.) 
191. Hopkinson, J. Excursion to Boxmoor and Nash Mills. 
Proc. Geol. Assoc., vol. xi, no. 5, pp. lviii-lxii. Field Meeting .... 
Boxmoor, Bennet’s End, and Nash Mills. Trans. Herts Nat. Hist. 
Soc., vol. v, pt. 8 (1890), pp. xxxvi-xxxviii. 
192. Morison, Dr. J. Notes on the Chalk Rock. Trans. Herts 
Nat. Hist. Soc., vol. v, pt. 7, pp. 199-202. (Herts, p. 200.) 
