INDEX TO THE PROCEEDINGS. 
of Cningen, cix; Sir R. Murchison 
on Bohemia, cix; Mr. Lyell on Au- 
vergne, cx; M. von Dechen on rep- 
tiles in the coal formation of Saar- 
briick, cxii; M. Ehrenberg on infu- 
soria from Barbadoes, cxiii; Mr. Milne 
on parallel roads of Glenroy, exiii; 
Mr. Charlesworth on silicified Trigo- 
niz, cxiv ; Dr. Percy on furnace slags, 
cxiv; M.Ebelmen on artificial forma- 
tion of crystals, cxv; Mr. Hopkins 
on the internal pressure of rock 
masses, CXViii. 
Delesse, M. A., on the chemical com- 
position of the rocks of the Vosges, 
civ. 
Denudation, Mr. Hopkins on pheno- 
mena of, 86. 
Descloizeaux, M., experiments on the 
Geysers, ci. 
Desiderata in the library of the Geolo- 
gical Society, cxxxiv. 
Dichodon, new genus, 37. 
Dinornis, Dr. Mantell’s account of, 232. 
Diluvial theory, Mr. Hopkins on, 88. 
Donations to the Society, July to Octo- 
ber 1847, 99; November to Decem- 
ber 1847, 143; January to March 
1848, 242; April to June 1848, 358. 
D’Orbigny, M. A., on the so-called 
Nummulites Mantelli, 12. 
Dumont, M., on the value of the pa- 
Jzeontological character in geology, 
cii. 
Durocher, M., on igneous rocks, xcvii. 
Ebelmen, M., on the formation of arti- 
ficial crystals, cxv. 
Edmonds, Mr., on sand-banks in 
Mount’s Bay, lxxviii. 
Egerton, Sir P. G., Palichthyologic 
Notes supplemental to the Works of 
Prof. Agassiz, 302. 
Egypt, Lieut. Newbold on the geology 
of, 324; on the silicified wood of, 
349. 
Ehrenberg, Prof., on the discovery of 
Polycystina in Barbadoes, cxiii. 
Elevation of the Lake district, Mr. Hop- 
kins on the, 82. 
Erratic blocks, Mr. Hopkins on the 
transport of, 88; Mr. Darwin on the 
transport of, from a lower to a higher 
level, 315; Mr. Mallet on, Ixxiii; 
M. Frapolli on, xeviii. 
Forbes, Prof. E., on the Orbitolites 
Mantelli, 11 ; memorandum on some 
fossiliferous localities in Wales, 297. 
, on the geological age of the Chair 
of Kildare, lxxv. 
Frapolli, M., on erratic blocks and 
scratched rocks, xcviii. 
Geological Society of Cornwall, notice 
of its proceedings, lxxvi. 
of France noticed, xcvii. 
—— of Ireland, its proceedings 
noticed, lxxii. 
— of Manchester noticed, lxxix. 
—— of West Riding of Yorkshire, 
Ixxix, 
Geological Survey of Great Britain, 
progress of, Ixxx. 
Glacial theory, Mr. Hopkins on, 87. 
Glenroy, Mr. Milne on the parallel 
roads of, noticed, cxiii. 
Graptolites latus, n. sp., 223. 
Halonia, Mr. Dawes on its internal 
structure, 289. 
Hamilton, Mr. W. J., on the agate 
quarries of Oberstein, 209; notice 
of, Ixviii. 
Hastings, Marchioness of, discovery of 
extinct anthracotherioid animals by, 
103. 
Homothorax, the under surface of Pte- 
richthys, 312. 
Hopkins, Mr. W., on the Lake district 
of Cumberland and Westmoreland, 
70. 
, on the internal pressure of rock 
masses, CXViil. 
Hordle, Hampshire, Prof. Owen on the 
fossil remains of mammalia from the 
eocene sand at, 17. 
Horner, Mr. L., letter on the discovery 
of saurian remains in the Saarbriick 
coal-field, 17. 
Hyopotamus vectianus, description of 
its teeth and jaws, 103. 
bovinus, teeth and jaws described, 
104. 
Icebergs, formation of, in antarctic re- 
gions, Ixxxiv; on the transporting 
power of, Ixxxv. 
Johns, Rev. C. A., on the landslip at 
the Lizard, 193. 
Johnson, Mr. P. N., on electric action 
as affecting metalliferous deposits, 
Ixxviii. 
Jukes, Mr. Beete, on the geology of 
Australia, 142. 
, and Mr. Selwyn, sketch of the 
structure of the country from Cader 
Idris to Moel Siabod, North Wales, 
300. 
, voyage of the Fly noticed, xc. 
Kane, Sir R., discovery of earthy car- 
bonate of manganese by, Ixxii. 
Labuan, Mr. Bellot on coal in, 50. 
Lemon, Sir Charles, on recent changes 
in Heligan, Ixxviii. 
Lepidodendron, upright, with stigmaria 
roots, Mr. Brown on, 46. 
ee 
