94 
J. HOPKINSON-LIST OF WORKS 
193. Beynolds’ Geological Atlas of Great Britain. 2nd ed. 
8vo. London. (Herts, Map 2.) 
194. Whitaker. W. Guide to the Geology of London and the 
neighbourhood. 5th ed. Geol. Surv. Memoir . 8vo. London. 
(South Herts, see Index.) 
195. Whitaker, W. The Geology of London and of Part of the 
Thames Basin. Geol. Surv. Memoir. 2 yols. 8vo. London. 
Yol. I, Descriptive Geology. (Herts : Upper Silurian Underground, 
pp. 30-32, 41-46 ; Gault and Upper Greensand, p. 51 ; Chalk, 
pp. 72-74, 77-81; Beading Beds, 195-210 ; London Clay, 254-255, 
264-265; Clay-with-flints, p. 287 ; Brick-earth, 290 ; Pebble 
Gravel, pp. 292-294; Glacial Drift, 303-307 ; Boulder Clay, p. 323 ; 
Biver Drift, pp. 448-450; Alluvium, p. 472; Pudding-stone, 479 ; 
Physical Geology, pp. 483-484, 499 ; Springs, 503-504 ; Analyses, 
536-537.) Yol. II, Appendices. (Herts: Well-Sections, pp. 43-58 ; 
Borings, 276, 289-290.) 
1890. 
196. Ford ham, H. G. A Becord of Water-level in a deep Chalk 
Well at Odsey Grange, Boyston, 1878-1888. Trans. Herts Nat. 
Hist. Soc ., vol. vi, pts. 1, 2, pp. 31-36, pis. i, ii. Discussion, pt. 7 
(1892), pp. xxii-xxvi. 
197. Green, U. Excursion to Shenley. Proc. Geol. Assoc., 
vol. xi, no. 9, pp. clxix-clxxi. Field Meeting .... Shenley and 
Badlett. Trans. Herts Nat. Hist. Soc., vol. vi, pt. 7 (1892), 
pp. xxxvi-xxxvii. 
198. Green, U., and Dr. J. Morison. Excursion to Potter’s Bar 
and Hatfield. Proc. Geol. Assoc., vol. xi, no. 9, pp. cxl-cxliii. 
199. [Hopkinson, J.] Field Meeting .... Chandler’s Cross, 
Watford. Trans. Herts Nat. Hist. Soc., vol. v, pt. 8, pp. xx-xxi. 
(Bemarks by U. Green.) 
200. [Hopkinson, J.] Field Meeting .... Aldhury and 
Ashridge Park. Ib., pp. xxiii-xxiv. 
201. [Hopkinson, J.] Field Meeting .... Harpenden. Ib., 
pp. xxiv-xxv. 
202. Hopkinson, J. On Geological Photography in Hertford¬ 
shire. Trans. Herts Nat. Hist. Soc., vol. vi, pt. 2, pp. 49-52. 
203. Hopkinson, J. The Biver Colne and the Swallow Holes at 
Potterells. Proc. Geol. Assoc., vol. xi, no. 9, pp. cxl-cxliii. Trans. 
Herts Nat. Hist. Soc., vol. vi, pt. 7 (1892), pp. xxix-xxxii. 
204. Prestwich, Prof. J. On the Belation of the Westleton 
Beds, or Pebbly Sands of Suffolk, to those of Norfolk, and on their 
Extension Inland; . . . . Part II. Quart. Journ. Geol. Soc., 
vol. xlvi, pt. 2, pp. 120-154. (Herts, pp. 137-139, 145, 149, 150.) 
PI. vii, Diagram-Sections .... (fig. 3, Section from Surrey to 
Hertfordshire). 
205. Prestwich, Prof. J. On the Belation of the Westleton 
Shingle to other Pre-Glacial Drifts in the Thames Basin, and on 
a Southern Drift, .... Ib., pp. 155-181. (South Herts, 
pp. 165-166.) PI. viii, Map .... (includes Herts). 
