508 



INDEX. 



R. 



Radipole Barracks, Weymouth, notice of the Ox- 

 ford clay near, 28. 

 " Rag," Kentish, described, 117. 

 Kail-roads in England have determined the heights 

 of numerous points of small elevation, 375. 



, list of heights derived from 



the sections of, 37.')— 381*. 

 Raven Crag, notice of a fault at, 51. 

 Ravenglass, coarse red gravel of the cliffs south 

 of, consists apparently of debris of new red 

 sandstone, 389. 

 Ravenstone Dale, account of the dislocations in 



the calcareous hills of, Gl. 

 Red marl and gypsum of St. Bees Head, very 

 nearly on parallel of the lower red marl and 

 gypsum of Yorkshire, 398, and note. 

 Red sandstone of St. Bees Head, exact equiva- 

 lent of upper red sandstone of Yorkshire, 398. 



series of Scotland and England, 



general comparison of, 402. 

 Reigate, Surrey, section at, 142. 

 Remarks, general, on the strata between the chalk 



and Oxford oolite, 318. 

 Reptiles, fossil remains of, in the environs of 

 Bonn, described by Prof. Goldfuss, 453. 



, of the Lower green-sand, 153. 



Weald clay, 179. 



Hastings sand, 179, 206, 



229. 



— Purbeck strata, 230, 298. 



— Portland stone, 301. 



— Portland sand, 269. 



— Kimmeridge clay, 303. 



— Oxford oolite, 316. 



Resemblance, notice respecting the, of deposits of 

 different epochs, 333. 



Rhine, height of its surface at Bonn, 433, 472. 



, Valley of the, physical features of, 462. 



Rhinoceros tichorinus, tooth of, found by Mr. 

 Horner in a gravel pit near Bonn, 478. 



Ridge, Vale of Wardour, section at, 247. 



Ridges, anticlinal, of curved strata, near Seven- 

 oaks, Kent, described, 133, and note. 



of small extent, supposed mode of their 



formation, 136. 



Ridges, another hypothesis explaining, 136, 



note. 

 Ridgeway fault, in Dorsetshire, description of the 



great, iQ. 

 , no indications of 



ruin and violence throughout its line, 42. 

 Ringstead Bay and Osmington faults, 39. 

 Risell, notice of beds on sides of, 87. 

 River gorges, of the Wealden, remarkable, 151. 

 Rivers, their mode of egress from the Wealden 



tract, 132. 

 , their course transverse to the chalk, fa- 

 voured by the stratification, 151. 

 Rock, extensive sheets of bare, frequent in the 



Ghats of the Dukhun, 422. 

 Rocks, sedimentary, of Bonn, relative ages of, 



464 — 466. 

 , of the Dukhun, remarks on 



431. 

 , volcanic, of the environs of Bonn, 467; 



their ages in relation to each other, and to the 



sedimentary rocks, 467. 

 Roderberg, an eruption from, subsequently to the 



commencement of the deposit of the loess, 



478. 

 , alternation of volcanic ejections with 



the loess near, 475. 

 . — , recommendation by Mr. Horner of a 



recently published account of the, by M. Carl 

 Thomae, 472. 

 , volcanic eruption of the, 447, 468. 



Rose, R. C. Esq., of Swaff'ham, his account of 

 West Norfolk, referred to, 309. 



, section by, from SwafFham to 



Lynn, (Plate X. a. No. 25); 310. 



Rosley, new red sandstone not conformable to 

 coal strata near, 387, note, 



Rothe todte liegende of Germany, not repre- 

 sented by the magnesian conglomerates near 

 Bristol, 400, 403. 



Riippell, Dr., on Ichthyosiagones, referred to, 348. 



Salt Brook," stones in a rivulet so called, in- 

 crusted with common salt and carbonate of 

 lime, 425. 



