514 



INDEX. 



Limestone altered by trap, notice of, at Pureriah, Lower green sand, fossils found in the, of Sussex, 



193. 



211. 



concretionary quarries of, on the sou- 

 thern shores of the Murray Firth, 151. 

 containing organic remains, example 



of mineral change subsequent to deposition, 463. 

 crystalline, without magnesia, associated 



red marl and gypsum, description of, in 



the neighbourhood of Doncaster and Ferry 

 Bridge, 101. 



range and extent 



of, 102. 



wit!i the yellow magnesian limestone, described, 



89. 

 hill west of Tickhill, section of theupper 



thin-bedded limestone at, 105. 

 light-coloured, of Nice, described, 182. 



section of, at Plas- 



ter-pit hill near Ferry Bridge, 101. 



in the line 



of the canal below Knottingley, 101. 



in the quar- 



compared to the ries behind Askerne, 102. 



limestone at the base of the Saleve near Ge- 

 neva, 182. 



red sandstone, description of, 64, 66. 

 equivalent of therothe-todte- 



vvith green grains near liegende, 64, 121, 239. 



Nice, compared to the mulatto of Antrim, 181. 

 red encrinital, of the Eastern Alps, de- 



72 note, 73. 



scribed, 313. 

 rocks, pi-esent sometimes two sets of 



irregular thickness of the. 



causes of, 73. 



lowest member of the group 



joints inclined to each other at an angle nearly of the new red sandsone, 64. 

 equal to that of calcareous spar, 485. 

 younger Alpine, description of, 316. 



Lindley, John, Esq., observations on the fossil 

 plants of (Eningen, 288. 



Livermead Cliffs, Devon, composed of red con- 

 glomerate and sandstone, 163. 



Llanrhaiadr, description of section near, 476. 



Loch Groinard, sandstones and marls on the south 

 shore of, noticed, 156. 



obstacles presented by, in 



sinking for coal in Durham, 72 and note. 

 Pontefractrock of Mr. Smith, 



synonyme for, 64. 



range and extent of, from Der- 

 byshire to the county of Durham, 68. 

 varieties of the, 66. 



382. 



Styria, on the tertiary formations of, 



• might represent the Lune, description of a group of slate rocks between 



new red sandstone of England, 156. the Wharfe and the, 1. 



Loch Ness, valley of, existed in part anterior to Lunesdale, geological structure of, 6. 



limestone of, full of crinoidal remains 



and other fossils, 8. 



old red conglomerate of, described, 7. 



notice of the boulders of, 7. 



fossils in the micaceous slate 



the secondary epoch, 144, note. 

 Loch Ranza, Isle of Arran, description of the 



coast section from, to Brodick, 24. 

 Lohargaon, on the structure of the neighbourhood 



of, 193. 

 London clay, list of fossils found in, in Sussex, 



202. 

 Lonsdale, William, on the oolitic district of Bath, 



241. MacCulloch, Dr., notice of his description of the 



Lower chalk, sectional list of strata near West- north-west coast of Sutherland and Ross-shire, 



of, 6. 



M. 



bury in Wiltshire, 270. 



green sand, description of, near Devizes, 



266. 



153, 154. 



■ observations on his works on the 



geology of Scotland, 125. 



