746 



INDEX. 



Ox Mountains, account of the mica slate of, 161. 

 Oxford, analysis of a saline spring near, 263. 



Padstow, remarks on peculiarities of structure in 

 the calcareous slates west of, 655, 665 note. 



notice of fossils found near, 667, 697. 



Parish, Sir Woodbine, notice of fossils found in 

 the Bognor rocks, 262. 



Pennar, observations on the valley of the, 540. 



Pentacrinites, notice of fragments of, found in a 

 well at Hampstead, 132. 



Pentland, J. Esq., reference to his observations 

 on Indian tertiary deposits, 277. 



Peperite, description of, near Caesarea, 595. 



Permizen Bay, notice of calcareous slates in, 667. 



Petherwin group, notices of fossils found in, 693, 

 694, 697. 



agree gene- 

 rally with those of Barnstaple, Marwood, &c., 

 694. 



placed on a parallel with the 



Barnstaple beds, 694. 



Petrification, first ocular demonstration of pro- 

 gressive steps in, 214. 



Petroleum springs, notice of, in Coalbrook Dale, 

 438. 



Phillips, Prof., remarks on his opinion that rocks 

 are imperfectly elastic in the mass, 620. 



■ observations by, on the Devon- 

 shire fossils, 692, 693. 



list by, of coal plants found near 



Kanturk, 54. 



Pindee Hills, description of, 555. 



Pinnacles, account of, in the Bermudas, 120. 



Plastic clay, notice of, in a well sunk at Hamp- 

 stead, 131, 133. 



■ the fossils found in the bed 



of hard stone between the London clay and 

 the, 133. 



■• near Read- 



127. 



in Suffolk, 361. 



Plesiosaurus, exposition of the general characters 



of the vertebral column of, 521. 

 — — macrocephalus, description of, 515, 



I'ertebrae, 525. 



vertebrae, 526. 



tail, 527. 



Plesiosaurus macrocephalus, comparison of, with 



the P. Hawkinsii, 523. 

 . the 



cervical vertebrae, 523. 

 . . dorsal 



■ sacral 



the 



pecto- 



pelvic 



head, 531. 



Plymouth limestone, considered to be the equiva- 

 lent of that of Berry Head, 650. 



description of, 653. 



not traceable west of White- 

 sand Bay, 653, 664. 



■ description of a section from 



ral extremity, 529. 



extremity, 530. 



Dartmoor to the, 653. 



from 



the, to Bolt Head, 656. 



corals found in, 697. 



Point of Garron, notices of the neighbourhood of, 



77, 79, 80. 

 Pointe de Monts to the Seven Islands, account 



of the coast from, 90. 

 Polparrow, description of the strata near, 665. 

 Poolacloger, contorted strata north of, 165. 

 Popple bank. North Devonshire, observations on, 



282, 285, 

 Por!ock,remarks on the neighbourhoodof, 639,645. 

 Pottinger, Col., notice of fossils collected in 



Cutchby, 717. 

 Porphyry, in the north-east of Antrim, described, 



73. 

 dislocating 



effects of and changes produced by, 73. 

 newer than 



the old red sandstone, more ancient than the 



new red, 7S. 

 a bed of clay porphyry, probably in- 

 cluded in old red sandstone, at Fair Head, 74. 



