INDEX. 
690 
Petrozavodsk, transverse dislocations near, 24. 
. elevations of compared to that of the Tinian, 4 to. 
, appearances of drift, at, 514, 515. 
direction of scratches on the rocks near, 5,10. 
Phillips, Prof.’ John, his ■ Geology of Yorkshire' referred to, 1. 
t his works on palicozoic fossils, passim. 
his suggestion concerning the fossils of the 
English magnesian limestone, 7*. 
Philippi Prof., his identification of fossils from the vV lehczka 
rock salt, 291. 
Physical geography of Central Russia, 20*. 
I of the. Ural mountains, 539 et seq. 
. (ancient) of Russia and the Ural mountains, 
471 et seq., 521, 554. 
Piana river, interesting sections of Permian rocks at, 165. 
, belemnites observed in the bed of the, 241. 
, concretions of impure argillaceous (Jurassic) limestone 
between this river and the Sura, 245. 
Piamla, concretions of pink gypsum (Permian) at, 174. 
Piattisbianskaya, section of cretaceous rocks on the Don be- 
tween this town and Golabinskaya, 270. 
Pictet, his memoir on the conservation of summer-ice in natural 
caverns, 197. , , _ 
Pictina, a village on the Don where the most southerly Devo- 
nian rocks occur, 60. 
Pijema or Pishma river, Devonian rocks on the, 414. 
l’inega river, carboniferous limestone on banks of the, 77 ; 
Permian rocks with gypsum, 172. 
, section of the cliffs near the town of, 173. 
Pinsk, marshes of, the southern limit of the erratic blocks, 5 to. 
Pinus r.embra, its abundance in the Ural mountains, 3J1. see 
sketch, 428, 654. 
Pisolitic limestones (carboniferous) near Vitegra, 7o. 
(Permian), account of, 143. 
(Jurassic) on the Douetz, 250. 
Planer-kalk of Sasonv, its geological position, 261. 
Plants, fossil (carboniferous), 79, 112, 129, 410. 
(Permian), in highly cupriferous gnts, 144. 
compared by M. Urongniart with car- 
boniferous and oilier plants, 219. Sec vol. ii. 
(Jurassic), of the siliceous grit of Moscow, 240. 
Plastic clavs between Kremcnetz and Grodno, 285. 
Piatanoff, Captain, his assistance, 143. 
Platiniferous alluvia, nature of, 484. 
Platinum, origin of the ore of, 483. 
alluvia of, in the central ridge of the Ural, 3J3. 
and gold diffused through the rocks in winch they 
Play,°M. le, his description of the coal-field of the Donetz, 120 
t on the igneous origin of magnetic iron ores and 
platinum of the Ural, 376, 380, 484. 
Pies, red marl covered by Jurassic rocks near, 178. 
, succession of Jurassic rocks between this place aud Ki- 
neshma, 233. 
Plesiosaurus, remains of, found near Moscow, 417. 
< Pleta,’ or Orthoceratite limestone, its position in the Russian 
lower Silurian, 25*. 
general account of, 28*. 
passage upwards into supe- 
rior strata possibly traceable by the examination of the 
country west of Baltiscli Port, 34. . - 
proved by its lossils to be- 
long to the lower Silurian rocks, 36*. 
Pliny, his view of the changes that had taken place around the 
Caspian before his time, 577. 
Pliocene, date of the steppe limestone, 29.1. 
of the Caspian deposits, 323. 
Pocroi (Kovno), grey Silurian limestone at, 35. 
l’odgornoi, hills of grit and conglomerate thrown off by the Gu- 
herliuski hills (South Ural), 449. 
Podolia, height of the western extremity of the granitic steppe 
of, 21. 
, extent of Silurian formations in, 38 . 
Podolia, mioetne tertiaries in, 283, 294. (See Dubois.) 
Poland, sandstones south of Warsaw belong to the same series 
as the siliceous grits of Moscow (Jurassic), 241. , . , 
. Jurassic rocks of, connect the oolites of England with 
those of Russia, 253. 
, account of the cretaceous rocks of, 263. 
, middle tertiary deposits in, 283. 
( the southern part of that country surrounded by erra- 
tic blocks, 526. 
Polish frontier, erratic blocks in this district, »23. 
Polished rocks in the government of Olonetz, 530. 
no proof of glacial action exclusively, 552. 
Polist river, lower members of Devonian system visible m its 
water-conrse, 42. 
Polypifers of the Permian rocks all distinct from those ot the 
carboniferous series, 216. 
Pomerania, trainees of Scandinavian boulders in, 5-3. 
Pontefract rock of England represented by some of the Permian 
grits of Russia, 202. 
Popot'skoe (Donetz), anthracite of, 101. 
Popovka (a tributary of the Slavenka), transverse rents of the 
strata near, 31*. 
, fossiliferous beds of lower Silurian limestone near, 29. 
Poritz, south of Czarskoe-celo, marlstone cliffs of Devonian 
age at, 33. 
Porphvry of Ringerigge (Norway), 13*. 
— alternating with schists in the Irendvk, 453. 
and other rocks of the axis of the South Ural, 454. 
, augitic, of Elagodat (North Ural), 379. 
■, copper mines at the junction ot this rock with lime - 
stone at Tnryinsk, 398. 
near Verch-Uralsk, 444. 
Porphyritic breccia of Mount Sabliu, 411. 
Posen,’ absence of great erratic blocks in the plain of, 5-3. 
Posidonia shale (Jurassic) of the Ijcma, 417. 
Possbbea, on a tributary of the Siass river, dome of lower Silu- 
rian flags at, 30*. 
Prague, Silurian strata near, 3*. 
Preobrajenski-gora (Orsk) greenstone porphyry and jasper, 4 10. 
Preobrajensk, section across the plateau of, 450. 
, zavod of (South Ural), 452. 
Preservation of the skin and hair of the mammoth, &c. a natural 
effect of the Siberian climate, 495. 
Prikslia (Valdai). See Friulchlca, the name being spelt in this 
way by mistake in the text. 
Pristau ’(South Ural), Silurian rocks between Alina and, 432. 
Priutehka (properly Priksha) rivulet (Valdai), admirable natural 
sections of Devonian aud carboniferous strata in the gorge 
of, 45, 46, 71. 
r fossils of upper limestone of the, /2. 
Product™, great abundance of, in the carboniferous series of 
Russia generally, 134. 
f common in the carboniferous system of the Donetz, 
94. 
■- giganteus (Jicmisphericus, Sow’.) characteristic of the 
lower limestone of Tula and Kaluga, 79. 
striata {anomala, Sow.) found in the lower limestone 
of the Valdai Hills, 72. 
, character of the Permian species of this genus, 20/. 
Cancrini, beds containing, 154. 
horrescens the zeclistein analogue of P. horridus, 21 / . 
limes tone(carhoniferous), its position in the series, 78. 
(Permian), description of, 153. 
. viioiuiiyi .w.w.-j. Ilf, 
Productive coal-seams beneath the chalk near Uspensk, 
Protozoic tvpe developed in the lower Silurian rocks of England, 
Norway, Sweden, Russia and America, 2 to 39*. 
Prussia, account of erratic blocks in, 522. 
Psammitic sliale (cretaceous) south-west of \ olsk, 274. _ 
grauwneke in the gorge of the Lrmanzelair, 4o2. 
PtcrophyUum Murchisonianum a fossil of the siliceous (Jurassic) 
grits of Moscow, 240. . 
Pudolsk on the Pakra, uppermost bedB of white (carboniferous) 
limestone at, 81. 
