386 DEVONIAN AND CARBONIFEROUS LIMESTONES (TCHUSSOVAYA). 
Stina voi, or the wall. Though we did not discover fossils at this spot, there can 
be no doubt that this is true carboniferous limestone, both from its lithological 
identity with rocks a little lower down the river, which contain characteristic 
remains, and from being similarly superposed to true Devonian rocks. In fact, 
after various contortions of the inferior beds, the very same limestone, i. e. a light 
grey uniform rock, like the prevalent carboniferous limestone of England, and 
very different from the dark-coloured and white- veined Devonian limestone, rises 
up into the bold and lofty cliffs called Multik, 300 feet high, the beds of which 
plunge towards the Ural, and in which we found the Productus Scoticus, Caryo- 
phyllia fasciculata (Flem.), with other mountain limestone forms 1 . 
These masses of limestone are, indeed, 
distinctly seen to lie in a trough ; since on 
proceeding somewhat eastward by a bend 
of the river towards Oslanski Pristan, 
we again met with precipitous peaks of 
Devonian limestone (Igluvostroi-kamen), 
for the most part in highly broken and 
grotesque forms as represented in this 
woodcut. 
The older members of the Devonian 
system, or the upper part of the Silurian 
(where there are few limestones and fos- 
sils it is impossible to draw neat lines 
of division in a rapid survey), are thrown 
about with an inverted inclination, often 
plunging towards the Ural, and occupy 
low domes and undulations around the 
station of Oslanski Pristan. These de- 
posits are composed of purple, red and greenish and grey schists and grits, with 
1 Productus gigas, P . antiquatus, P . Scoticus, Spirifer Mosquensis, with Caryopkyllia fasciculata (Flem.) • 
Harmodites reticulata ( Syringopora , id. Goldf.), H. ramulosa, Favosites spongites, and other carboniferous 
fossils occur at Ilink and further up the stream. Several of the corals mentioned in this and other pages 
had not been seen by Mr. Lonsdale when these sheets were going through the press, and they may under 
his scrutiny be occasionally distinguished by other names. (See in subsequent part Mr. Lonsdale’s de- 
scription of the corals.) 
