640 
INDEX. 
VOLFTA. 
Voluta Lamherti, faliuis, 214. 
- nodosa, London clay, 2G6. 
- Selselensis, Bracklesham, 262. 
VonBiich, Leopold, oil “elevation craters,” 
496. 
-, on Silurian plutonic rocks, 5T2. 
WACKE described, 50S. 
Wagner, M., on Miocene of Greece, 226. 
Walchia piniformis, Permian, 392. 
Wales and England, glaciation of, ISO. 
Wallich, Dr., on Atlantic mud, 287. 
* Water, denuding power of running, 98, 
115. 
-, action of, in metamorphism, 584. 
Watt, Gregory, on fusion of rock, 584. 
Weald clay and its fossils, 317. 
Wealden area, thickness of the, 319. 
-formation, 313. 
-flora, 320. 
Webster, Mr. T., on Tertiary strata, 141. 
Wellington Valley caves, 158. 
Wenlock formation, fossils of the, 465-468. 
-limestone, 465. 
—- shale, 467. 
Werner on mineral veins in Saxony, 609. 
-on isomorphism, 502. 
Westwood, Mr., on Lias beetles, 363. 
Wexford, veins of copper at, 615. 
Whitaker, Mr., on subaerial origin of es¬ 
carpments, 104. 
White or coralline crag, 197. 
-sand of Alum Bay, 38. 
Whymper, Mr., on Arctic Miocene plants, 
240. 
Williams, Mr., on Cornish lodes, 607. 
Williamson, Professor, on conifers of the 
Coal, 428. 
-, on structure of calamite, 425. 
Wind, denuding action of the, 97. 
ZURICH. 
Wood, Mr. Searles, on Bridlington shells, 
190. 
-, on Chillesford and Aldeby beds, 192. 
-, on shells of the Crags, 194,195,199. 
-, on shells of Crag and Ealuns com¬ 
pared, 213. 
-, on flsh of Headon series, 255. 
-, table of marine testacea of the Crag, 
202 . 
-, on thickness of coralline crag, 198. 
Woodward, Dr., on St. Cassian fossils, 377. 
-, Mr. H., on Pterygotus, 447. 
Woolhope beds, 467. 
Woolwich and Reading series, 267. 
W'right, Dr., on Barton shells, 258. 
-, on zones of the Lias, 353. 
Wiinsch, Mr. E. A., on trees in volcanic 
ash, 546. 
Wy ville Thomson. See Thomson. 
XIPHODONgracile, Paris basin, 271. 
Xylolius Sigillarice, ISova Scotia coal, 415. 
YOREDALE beds, thickness of the, 395. 
Yorkshire, Oolite of, 349. 
Young, Mr., on seeds washed out of mam¬ 
moth tusks, 176. 
ZECHSTEIN of Germany, 392. 
Zeolites, secondary volcanic minerals, 600. 
Zeuglodon cetoides, Eocene, United States, 
280. 
Zircon-syenite, 558. 
Zoantharia rugosa and Z. aporosa, 431. 
Zones of the Lias, 353. 
Zonites priscus, Coal, 415. 
Zoological provinces, great extent of, 127. 
Zoophytes, Ibssil, 48. 
-. See Corals, Bryozoa, etc 
Zurich, lake-dwellings in Lake of, 148. 
THE END. 
