INDEX TO THE PROCEEDINGS. 



Ischypterusj Sir P. G. Egerton on the 

 genus, 8. 



Italy, Sir R. I. Murchison on the earlier 

 volcanic rocks of, 281. 



Jurassic series of Portugal, noticed by 

 Mr. D. Sharpe, 156. 



Lake district, Mr. W. Hopkins on, no- 

 ticed, Ixiii. 



Lammermuirs, old red conglomerate of 

 the eastern, 419. 



Lamna , 329. 



Lardarello, Soffioni at, noticed by Sir R. 

 I. Murchison, 370. 



Leckhamptou Hill, section of, 239. 



Lepadidae, British fossil, Mr. C. Darwin 

 on the, 439. 



Lias, fossil plants from the lower, 413. 



Lichas Barrandli, 238. 



BucklancU, 235. 



Grayii, 237. 



' hlrsutus, 236. 



Salteri, 237. 



London clay, basement bed of Ihe, 255. 



Lower greensand, section of, at Seend, 

 453. 



Lycett, Mr. J., and Mr. J. Morris, on 

 Pachyrisma, 399. 



Lyell, Sir C. (President), Address on 

 awarding the Wollaston medal to 

 Mr. VV. Hopkins, xxiii ; Address on 

 awarding the Donation Fund to Mr. 

 J. Morris, xxvi ; Anniversary address, 

 February 1849, xxvii. Notices of de- 

 ceased Fellows : Christian VIII., king 

 of Denmark, xxvii ; the Earl of Auck- 

 land, xxviii ; Mr. William Clift, xxix ; 

 Mr. Frederick Dixon, xxxi. Sir R. I. 

 Murchison on the structure of the 

 Alps, Apennines and Carpathians, 

 xxxiv ; M. Boue on the nummulitic 

 rocks, xxxv; Al. Brongniart on the 

 eocene shells of the Diablerets, xxxv ; 

 the Biaritz shells, xxxv ; the nummu- 

 litic beds, xxxvi-xxxix ; the Glarus 

 slates and Monte Bolca limestone, 

 xxxvii ; Mr. Prestwich on the English 

 tertiaries, xxxvii ; Sir R. I. Murchi- 

 son on the Flysch, xxxvii ; the date 

 of the upheaval of the Alps, xxxviii ; 

 the extent of the post-eocene seas, 

 xxxix ; the granitic rocks of the Alps, 

 xl ; the folded strata of the Alps, 

 xli ; the paroxysmal hypothesis, xliii ; 

 M. d'Archiac's ' History of the Pro- 

 gress of Geology,' xliii ; M. d'Archiac 

 on active volcanos, xliii ; comparison 

 of disturbing causes in ancient and 

 modern times, xliv ; changes in the 

 organic and the inorganic worlds, xlv ; 

 continuance of existing faunee during 

 alterations of level in the Mississippi 



valley and in Scandinavia, xlvii ; the 

 volcanic rocks of the Alps and Pyre- 

 nees, xlviii ; the relation between the 

 axis of the Alps and the strike of the 

 strata, xlix ; the dolomites and gyp- 

 sum of the Alps, xlix ; the effects of ex- 

 pansion and contraction on the strata 

 of the Alps, 1 ; the crystallization of 

 granite, li ; the nagelflue and its ori- 

 gin, li ; the gradual subsidence of sea- 

 bottoms, liii ; the great length of time 

 required for denudation and oscilla- 

 tion of lands, Iv ; the dislocations and 

 lateral movements of the Alps, Ivii ; 

 the age of the granitic rocks of the 

 Alps, lix ; the formation of granite 

 and mineral veins in modern times, 

 Ix ; the erratics of the Alps, Ixii ; gla- 

 ciers and icebergs, Ixii ; Mr. Hopkins 

 on the elevation and denudation of 

 the Lake district, Ixiii; the improba- 

 bility of the occurrence of cataclysmal 

 waves, Ixiv ; the glacial theory, Ixv ; 

 comparison of the climate of the car- 

 boniferous epoch with that of the 

 present age, Ixv. 



Lyell, Sir C, on craters of denudation, 

 and on the structure and growth of 

 volcanic cones, 207. 



Mammalian remains at Brentford, Mr. 

 J. Morris on the occurrence of, 201. 



Manon — — , 330. 



Mantell, Dr. G. A., on the remains of 

 Dinornis and other birds, and on 

 fossils and rock-specimens from the 

 Middle Island of New Zealand, 319. 



, on the Northern Island of New 



Zealand, 319. 



, Mr. R. N., on the oolite of Wilts, 



310. 



Marginella coniformis, 45. 



Marginopora , 31. 



Marl, in Cambridgeshire, Mr. W. J. Ha- 

 milton on a bed of freshwater, 451. 



Mastodon angustidens, discovery of a 

 skeleton of, near Asti in Piedmont, 

 252. 



Metamorphic rocks of Nova Scotia, 347. 



Mexico, volcanic rocks of Northern, 251. 



Mitra Henikeri, 46. 



varicosa, 46. 



Monte Bolca limestone and Glarus slates, 

 noticed, xxxvii. 



Monte Nuovo, noticed by Sir C. Lyell, 

 225. 



Monts Dor and Cantal, noticed by Sir 

 C. Lyell, 234. 



Moore, Mr. J. C, on some tertiary beds 

 in the island of San Domingo, 39. 



, on shells in the Till, 388. 



Morris, Mr. J., and Mr. J. Lycett, on 



