INDEX. 
675 
Felkener, Lieut., his account of the rocks on the east shore of 
the Caspian, 308,312. 
Felspar, decomposed, of Kaltchedausk, 3G6. 
porphyry, of a pink colour, in the lower conglomerate 
of the lionet'/, coal-field, 93 ; in the South Ural, 444, 453. 
Felspathic rocks of the lrendyk ridge, 453. 
associated with gold ore, 477. 
and gneissic rocks of the southern steppes, 91. 
Fenestella, most abundant coral of the Permian system, 206, 221. 
Feodorofskaya, on the Volga, J urassic beds capped hy cretaceous 
rocks at, 246. 
Per oxydule (magnetic iron), its constant presence in igneous 
rocks, 380. 
Ferruginous sands with ironstone concretions, with fossiliferous 
J urassic rocks, 233. 
with green grains, in the Moscow basin, 236. 
sandstone of Tatarova, fossil plants of, 240. 
of Russia, probability that all of them belong 
to the coral rag formation, 243. 
and lignite, underlying oolitic beds at 
Kamenka on the Donee/, 251. 
Fibrous iron ore of Ynrasamskoi in the South Ural, 426. 
Filosofskaya, in northern Russia, Fusulinse observed near, 87. 
Finland, gulf of, the structure of some of its transverse erup- 
tive islands described, 24*. 
, section on the shores of the gulf of, 34. 
, angular blocks on the banks of the gulf of, 511. 
, identity of erratic blocks on the Slavenka with the 
rocks of, 512. 
Fischer de Waldheim, M., his work on the environs of Moscow 
referred to, 80. 
, his Rhopalodon Manlettii of the 
Permian rocks, 154. 
, his names of Permian plants, 219, 
and vol. ii. 
— , his researches concerning the Juras- 
sic fossils of Russia, 234. (See vol. ii.) 
, his account of the fossil quadrupeds 
of Russia, 501 . 
Fishes, fossil, their remains not hitherto found in the Silurian 
rocks of the continent, 33*. 
(Devonian), remains of. in marlstone south of St. 
Petersburg, 33, 39* ; at other places, 42 et seij. 
Fishes, fossil (Devonian), M. Eicliwald’s memoir on this subject 
commented on, 39. 
fouud in the gorge of the Priksha, 46. 
, no other fossils found in the sandy 
and argillaceous Devonian rocks near Lake Onega, 48. 
, of Riga, 52 ; of Orel, 56. 
, gigantic species from Dorpat, 53. 
■ — , of Russia, and their relation to those 
found iu Scotland in the old red sandstone, 65 et seq. 
, remains of, fouud on the Vol, 414. 
(Permian), account of, 212. 
, not. rare in rocks of this epoch, 218. 
(Jurassic), from the Volga, 240. 
(Tertiary), described by Pallas, 494. 
Fissures, singular, seen iu some parts of Russia, 571. 
Flags, calcareous, on the western flank of Mount Kalu in the 
South Ural, 459. 
, on the Vloia, 30*. 
Flagstones of Bechefou the Kalmiuss (carboniferous), 95; and 
shale of the Miuss (carboniferous), 99. 
, granitic, near Kanevsk and Miask (South Ural), 
423, 435. 
Flexible schists (Silurian) on the Ukhta, 414. 
Flexures and contortions in the country of the Donetz,, J3, 103 ; 
on the flanks of the Ural, 357, 363, 383 et seq., 429 et seq., 
456 et seq. 
Flint, courses of, in the cretaceous rocks of Uspensk, 26b. 
and chert associated with Permian grits and shales, 153. 
Floods occurring in Russia during the spring, their great extent 
and effects, 572. 
Flora, Permian, general remarks on, 218. 
Foraminifera, great abundance of, in the rocks of the Russian 
carboniferous series, 135. 
Forbes, Prof. Edward, his existing Scottish analogy to the be- 
ginning of the Aralo-Caspiau formation, 302. 
, his proofs that the arctic character of 
species does not wholly depend on latitude, 552. 
Forbes, Prof. James, his views of the nature of glacier move- 
ment, 509. 
Forehhannner, Prof., his analysis of metamorphosed limestone 
at Djelebeck (Norway), 14. 
— , his memoir on the conversion of fucoid 
schists into gneissosc rocks, referred to, 14*. 
, his geological map of Denmark, 541. 
, his opinions on the transport of boulders, 
555. 
Forests, absence of, in Southern Russia, 564. 
, effects of their destruction in Northern Russia, 578. 
Fossiliferous beds (Silurian) on the banks of the river Is, North 
Ural, 394. 
(Devonian) on the Serebrianka and Tehusso- 
vaya, 384. 
(Carboniferous) appearance of on the Issetz, iu 
Siberia, 363. 
on the eastern flanks of the 
Ural, 439. 
(Permian), at Sviaslc and Kazan, 162. 
, on the river Piana, 1GG. 
(Jurassic) of the Ural, 406. 
(Jurassic) at Okscvo, on the Oka, 233. 
Fossils (Silurian), general remarks on their distribution, 36 et 
seq. 
many species common to Russia and other 
parts of the world, 36*, 37*. 
, absence of, near the Silurian axis of the lrendyk chain, 
460. 
(lower Silurian) from many localities in the governments 
of St. Petersburg and Esthouia, 26, 27 lo 39. 
in the Arctic Ural, 408. 
(upper Silurian) of Norway, 12*. 
of Gothland, 18*. 
■ , wide distribution of certain species of, 
19. 
— — found hy M. Pander in the Russian 
island of Oesel, 35. 
■ found iu the Ural mountains, 364, 370, 376, 382, 396, 
401 , 402, 456 et seq. 
found in the Arctic Ural, 408. 
found in the Tinian range, 413. 
(Devonian) of Marina and Poritz (St. Petersburg), 32*, 
33, 39*. 
of Tchudova south of Su Petersburg, 42. 
• at Bor, on the Volkof, 43. 
iclithyolites on the banks of the Volkof, 44. 
between Riga and Dorpat, 52. 
gigantic bones of fishes ( Chelonichthys As- 
musii ) at Dorpat, 53. 
•, general view of, 62 et seq. 
of the flanks of the Ural mountains, 364, 368, 384, 386, 
390, 397. 
of the Timan range, 414. 
(carboniferous) of the limestone of the Priksha, 72. 
, casts of, iu magnesian limestone of this 
period, 73. 
, of the Moscow limestone, 80. 
, of the Fusutina limestone, 76, 85, 86, 98. 
, associated with coal at Alcxandrofsk, 96. 
. , of the limestone alternating with the 
coal seams of Lissitchia Balka, 110. 
, of the Donetz coal-field, their importance 
to the practical miner, 122. 
, characteristic of the calcareous grit of 
Artinsk. 128. 
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