748 



INDEX. 



Rocks of igneous origin, account of, in the Coal- 

 brook Dale district, 449. 

 Rock salt, notice of, on the borders of Pontus 



and Galatia, 589. 

 Rofe, J. Esq., on the geological structure of the 

 neighbourhood of Reading, 127. 



Roman aqueduct, description of a piece of wood 

 partially petrified from a, 5J07 et seq. 



- further notice of, 213. 



Ross, near Killala, section of the calcareous shale 

 and grit at, 156. 



■ Island mine, description of, 30. 



Roha-ke-Koss, account of disturbed beds near, 

 309. 



Rowington, section of keuper sandstone at, 33C. 



Rough Park, engine pit, section at, 480. 



Rushmere, sections at and near, 382. 



S. 



Sacral vertebrae, comparison of, in the Plesio- 

 saurus macrocephalus and P. Hawkinsii, 526. 



Saguenay river to Pointe de Monts, account of the 

 coast from the, 89. 



Saliferous marls and sandstone, description of, in 

 Gloucestershire, Worcestershire and Warwick- 

 shire, 332. 



Saline spring, notice of, at Admaston, 449 note. 



. . analysis of, near Oxford, 263. 



Saltburn, section of marlstone between Staithes 

 and, 237. 



Salt mines of Hadji Bektash, notice of the, 591. 



Sand drifts of Elbow Bay in the Bermudas con- 

 tain concretions and layers of stone, 110. 



Sand encroachments, account of, in the Bermudas, 

 109. 



. .^ stopped by trees, 109. 



. . advanced about 200 yards 



between 1807 and 1833, 110. 



Sand-hills, near Alvechurch, section of, 342 note. 



Sandstone, notice of recent, forming near the 

 river St. John, 91. 



— description of the, in which the dia- 

 mond breccia of India occurs, 542, 557. 



.. remarks on its relative age, 568. 



Sandstone formation of part of Asia Minor, de- 

 scription of, 584, 587, et seq. 



and clay, with beds of coal, description 



of, in Cutch, 292. 

 Santon Down, notices of the slates and flagstones 



near, 643, 648. 

 Saurians, description of three, from the magne- 

 sian conglomerate, near Bristol, 349. 



Scabbacombe Sands, description of the strata 

 near, 660. 



Scaphites gigas, remarks on, 411. 



Schistose rocks, description of, near Gamrie, 

 140. 



Schulau, notice of fossils near, 244. 



structure of the cliffs between, and 



Blankenese Point, 244. 



Scrope, G. Poulett, Esq., opinion of, respecting 

 the trachyte of Mayo, 168. 



Sea beaches, account of ancient, in the Seven 

 Islands, 90. 



Secular shrinking of the earth's crust, objection 

 to its being supposed a primary motive power 

 in all subterraneous disturbances, 631. 



Sedgwick, Prof., and Murchison, R. I., Esq. de- 

 scription of a raised beach in Barnstaple or 

 Bideford Bay, on the north-west coast of De- 

 vonshire, 279. 



■ on 



the physical structure of Devonshire, &c., 633, 

 688. 



Seeland, on the cretaceous and tertiary strata in, 

 243. 



Seetabuldee Hill, structure of, 558. 



Sesquicarbonate of soda, observations on the, of 

 the Lonar lake, 5G3. 



Serpuline reefs, distinctions between, and coral 

 reefs, 105, 117. 



Sevalik Hills, on the structure of the, and their 

 organic remains, 267. 



notices respecting their physical out- 



line, 267. 



some of the organic remains found 



in, identical with fossils obtained near Promc, 

 277. 



fossils of, present a mixture of ex- 

 tinct and existing forms, 503. 



