666 
INDEX. 
Aralo-Caspian deposits, condition of western boundary , 304. 
, conclusions concerning, 323. 
Aralo-Caspian or Steppe limestone, meaning of, 407. 
, description of, 2119. 
, conclusions drawn from the 
monotonous brackish-water nature of its zoological cha- 
racter, 300 ; conclusions modified, 652, 
, general section of, from the 
sea of Azof to that of Aral, 311. 
Area Oreliana, a Devonian shell at Orel and Ottrada, 56, 68. 
Archangel, fundamental rock beneath, probably Devonian, 49. 
, red and green Devonian marls between it and Onega, 
49. 
, white carboniferous limestones of, 73. 
, Permiau rocks in ascending the Dwina from, 172. 
, estuary deposits of the Dwina at, 570. 
Archangelskaya, north-east of Kargopol, fossils and ledges of 
carboniferous limestone at, 76. 
d’Archiae, Vicomte, his memoir on pahcozoic fossils, 2. 
— — on the formation Cretacee, 261, 262. 
Arctic Ural and Tinian Uange, general account of, 404 et seq 
, geological conclusions from the examination of, 418. 
Ardwick, near Manchester, presence of a Permian species of 
fish in upper carboniferous rocks at, 212. 
Argillaceous schist with auriferous veins near Miask, 435. 
limestone (Lower Silurian) between Isvosk and 
Petropavlosk on the Volkof, 30. 
iron ore in small quantities only, associated with 
the coal at Lissitchia-Balka (Donctz), 109. 
limestone concretions (Jurassic) at Vassili-Maidan, 
244. 
and siliceous masses representing the cretaceous 
series in the government of Kharkof and Kursk, 267. 
Arkose, or Lowest Silurian grit, resting on granitic gneiss in 
Sweden, 16. 
Armenia, discovery of true Eocene tertiary beds in, by M. Du- 
bois de Montpereux, 289. 
Armstrong, Col., map of t he neighbourhood of Petrozavodsk, 23. 
Arsagar, saliferous lulls (Permian) of, 192. 
Mount, the opinion of Pallas concerning, 318. 
Arsk near Kazan, section at, showing the marls and tufaceous 
limestone of the Permian system, 161. 
Artcmefka, conntrv of the Donetz, carboniferous scries at, 9J. 
Artesian wells likely to be effectual in reaching saline springs, 
183 197. 
Artinsk, account and age of the carboniferous grits of, 123. 
, grits and limestones of, west of Zlataust, 354. 
, grits of (repeated on the flanks of the Guberlmski lulls), 
Arzamas', fossils (Permian) found there identical with English 
magnesian limestone species, 165. . . ■ 
Asaphus expansus and Ilhams cramcxmda, characteristic tn- 
lobites of lower Silurian rocks of Scandinavia and Russia, 
12, 15*, 29, 37. . . , 
Buchii and A. tyrannies in lower Silurian rocks ot 
Norw ay and Sweden, 12, 15* ; very rare in Russia, 23. 
Asbestos, presence of, in the Guberlinski greenstone, 448. 
Asmus, Prof., his account of the Diirpat Devonian fishes, 53. 
Astrakhan, steppe of, a dried brackisli-sca-bottora, 31b. 
, limestone of the, 196. . 
, salt of, probably from Permian rocks, 1J<>. 
origin of the springs of, 320. 
Astrrr.a emarciata. See Uthastruiion emarciatum. 
Asturias, Silurian rocks in the, 4. 
Asuppcn (Corn-land), fossiliferous Devonian rocks of, aO. 
Auerbach, M., his discovery of fossil plants in the Jurassic grits 
of Klin resembling those found nearer Moscow, 240. 
Augite, abundaut crystals of, in the Katchkanar, 392. 
Augitic porphyry south of Kizilsk, 445. 
Auriferous alluvia, nature of, 476; limits of, 4/9. 
not found in Permiau conglomerates, 4/4. 
of Neviansk, 368 ; near llissersk, 390. 
of the Ural, 472 ; near Ekaterinburg, 476. 
Auriferous alluvia of Chrestovodsvisgensk, 480. 
of Pcsliauka, 482 ; of Soimanofsk, 487. 
of Cossatchi-datchi, 439, 491 . 
, hypothesis concerning the origin of, 492. 
rich zone in the environs of Miask, 434. 
quartzose veins near Miask and Ekaterinburg, 435, 477. 
sand separated from coarse gravel at Pcshanka, 482. 
Aurochs (Bos), the former existence of and present habitat, 
503, 638. 
Aushkul, Lake (South Ural), igneous and auriferous rocks at, 
437, 488. 
, Lake and Mount of (South Ural), lithographic sketch 
of, 437, 654. 
Austen, his memoir on greensand referred to, 260. 
Australia, palaeozoic rocks in, 6*. 
Aventurine found near Ekaterinburg, 362 ; Siberian variety of, 
434. 
, vase of, presented to Mr. Murchison by the Em- 
peror of Russia, 434. 
Avicnla retroflem and A. reticularis, upper Silurian fossils of 
Ocsel and Gothland, 19, 35*. 
, its importance among the Permian Monomyaria, 209. 
, its abundance in the Permian rocks, 21 7. 
* Avrachs,’ or ravines, nature of in Russia explained, 570. 
Avziausk zavod (South Ural), precise age of limestones of, not 
determined owing to the absence of fossils, 459. 
Axinm, a characteristic genus of the Permian system, 209. 
Axis, geological, of Russia in Europe, 53. 
, central, of the Ural rocks, 359. 
of the Ural, direction of, 466. 
Azof, sea of, tertiary sections north of, 296. 
, section from this lake to the sea of Aral, 31 1. 
Azoic rocks, meaning of the term, 10*. 
Babka, Sylva, &c., Permian sections near these rivers, 142. 
Baehmuth, north of the coal-fichl of the Donetz, 89. 
, probability of coal in the ridges south of, 1 18. 
, red rocks (Permian) occupying the vale of, 98. 
, Permian rocks overlying the carboniferous strata 
near, 115, 651. 
, chalk and upper Jurassic rocks north and east of, 98, 
118, 249. 
Baer, M., his observations on isles in the Gulf of Finland, 24*. 
, his discovery of coal in Nova Zemlia, 582. 
and Koppeu, M-, observations on the Volga, 578. 
Bagaratz, or Bagariatsk, south east of Ekaterinburg, carboni- 
ferous limestone at, 364 ; gypsum 25 versts from, 422. 
Bakalski (South Ural), iron ores of, 429. 
Balaebna, near Nijnv Novngorod, variegated marls with gypsum 
and salt springs at, 179. 
Balkh, country between this district and Khivah, probably 
covered by Aralo-Caspian deposits, 310. 
‘ Baltas,’ or fissures, seen in various parts of Russia, 571. 
Baltic provinces of Russia, Silurian rocks of, 25. 
, nature of the drift in, 510. 
Baltisch Port, Esthonia, large size of Ungulites at, 28. 
Barande, M., his collection of Silurian fossils from the neigh- 
bourhood of Prague, 3*. 
Baratinski (Obschey Svrt), fossiliferous grit (Jurassic) near, 247- 
Barhot de Marni, Si., has supplied the authors with many car- 
boniferous fossils (see Cossatchi Datchi), 44). 
Bannin-mis cape, north end of Tinian range, schists of, 41. 
Baruack rag of Northamptonshire, resemblance of the steppe 
limestones at Novo Tcherkask to, 299. 
Bannikova, cliffs of (Permian) white gypsum at, 167. 
, J urassie beds in situ near, 244. 
Barotzi, Major, his assistance, 365. 
Barton (Hants), fossils found at, identical w-ith older tertiary 
Russian species, 289. 
Basaltic character of the igneous rocks south of Kizilsk, 445. 
rocks of Tchaitzin-mis (Tinian range), 415. 
Basaltrcea, a proposed new genus of corals, described, 619. 
inconferta, description of, 621, 
