INDEX. 
561 
Olenus humilis, 45. 
micrurus, 43, 203. 
scarabaeoides, 45. 
Omalius d'Halloy, M. d', 331, 393. 
Omphyma subturbinata, 220. 
Oncoceras, sp., 165. 
Oneida sandstone, 429. 
Onny River, 124. 
Onondaga limestone, 431. 
Ophileta compacta, 165. 
Orbiculoidea Forbesii, 226. 
Orbigny, M. Alcide d', 18, 222, 309, 424, 
425 458 459. 
Ord of Caithness, 255, 257. 
Origin and distribution of gold, conclu- 
sions as to the, 472. 
Oriskany sandstone, 430. 
Orkney Islands, Old Red Sandstone of 
the 255 
Orme'rod, kr. G. W., 310. 
Ormo, 349. 
Orthis Actonise, 192. 
alata, 51. 
biforata, 193, 194. 
Bouchardi, 227. 
calligramnia, 51, 192, 227. 
flabellulum, 192. 
porcata, 193. 
remota, 51. 
reversa, 210. 
spiriferoides, 194. 
striatula, 51, 193. 
testudinaria, 68. 
vespertilio, 68. 
virgata (O. calligramma), 192. 
Orthoceras Avelinii, 48. 
bilineatum, 200. 
Brongniarti, 200. 
duplex, 357. 
encrinale, 48. 
filosum, 232. 
Ludense, 232. 
Maclareni, 160. 
prima; vum, 232. 
subundulatum (Creseis Sedgwicki), 
232. 
tenuicinctum, 200. 
— : — vagans, 200. 
sp., 165. 
Orthonota angulifera, 229. 
nasuta, 68. 
prora (O. semisulcata), 229. 
Osersky, Col., 345, 358. 
Owen, Dr. Dale, 19, 28, 330, 432, 433. 
Owen, Prof. R., 151, 303, 343, 356, 428, 
457, 477, 482, 545. 
Pacht, M. R., 364. 
Page, Mr. D., 142, 239, 251, 261, 292, 
297. 
Paillette, M., 415, 418. 
Palaeaster asperrimus, 191. 
hirudo, 225. 
obtusus, 191. 
Ruthveni, 225. 
Palseocoma Colvini, 127. 
Marstoni, 127. 
Palaeocyclus porpita (Cyclolites lenticula), 
Palaeoniscus Frieslebeni, 343. 
Palae ontology of New York, Prof. James 
Hall on the, 432. 
Palaeopyge Ramsayi, 28. 
Palaeozoic life, change to Secondary, 481 ; 
general spread of, 500 ; geographical 
range of, 503. 
Palaeozoic rocks, general succession of, 15. 
Palaeozoic rocks of the Alps, 369; Bel- 
gium, 398 ; British North America, 
434; France, 406; Germany, 381 ; the 
Harz, 390; Italy, 421 ; Moravia, 371; 
North America, 424, 546 ; table of the 
order of superposition of the, 446 ; Nor- 
way, 353; Poland, 370; Portugal, 419 ; 
Rhenish Provinces, 392 ; the Riesenge- 
birge, 370; Russia, 367; Sardinia, 421; 
Saxony, 385; Spain, 415; Styria, 369; 
Thuringia, 382; Turkey, 369. 
Palaeozoic succession of animals, 476. 
Palasterina primaeva, 225. 
Palmer's Cairn landslip, 129. 
Pander, Dr. C, 192, 345, 355-363, 544. 
Paradoxides Davidis, 203. 
Hicksii, 44. 
Parennes, Ardoises de, 408. 
Parker, Rev. J., sketches by, 39. 
Parkinson, Mr., 224. 
Partsch, M., 371. 
Passage-beds from the Upper Silurian 
rocks into the Old Red Sandstone, 136, 
549. 
Patella Saturni, 197. ' 
Pattison, Mr. S. R., 279, 480. 
Peach, Mr. 0, 10, 145, 164, 166, 258, 264, 
268, 269, 478. 
Pecopteris lonchitidis, 300. 
Peebles-shire, Silurian rocks of, 150. 
Pellico, M., 416. 
Pembrokeshire, Caradoc formation in, 74 ; 
Carboniferous rocks of, 289 ; Llandeilo 
formation in, 52 ; Old Red Sandstone 
of, 247 ; Silurian rocks of Marloes Bay, 
143. 
Peneen, 331. 
Pengelly, Mr., 16, 333. 
Penrith sandstone, 331. 
Pentamerus-limestone, 430. 
Pentamerus lens, 90. , 
liratus, 90. 
oblongus, 90. 
undatus, 90. 
Pentland Hills, 153, 159 ; Old Red Sand- 
stone of the, 249. 
Pentland, Mr., 424. 
Perceval, Mr., 427. 
Percy, Dr., 28, 450, 459. 
Permian life to Secondary, change from, 
481. 
Permian rocks, 16 ; of England, 327 ; 
France, 413; Germany, 313; Ireland, 
