﻿Trof. Milne — Across Europe and Asia. 



403 



After this a third ProcZttcirts-limestone is found, which rests nncon- 

 formably upon the underlying Devonian. The repetition of this 

 Productus-livne&ionQ may perhaps be explained in a manner similar 

 to that which I have suggested as an explanation for the intercala- 

 tions of the Fusulina-WmQsioriQ^ on the western side of the Urals. 



The general relations of these three coal-fields are shown in the 

 foUowine: table : 



II. 



III. 



South op Moscow. 



West of Urals. 



East of Urals. 



1. Limestone with i^M«M- 

 lina cylindrica. 



1. Millstone-grit. 



2. Limestone with F^ 



cylindrica. 



3. Sandstone, slate, and 



Coal. 





2. Limestone with. Fro- 

 ductus g.igas. 



4. limestone with Fro- 

 ductus gigas. 



1. Limestone with F. 



gigas. 



2. Sandstone, Coal and 



conglomerate. 



3. Limestone with F. 



gigas. 



4. Sandstone,conglome- 



rate and Coal. 



5. Limestone with F. 



gigas. 



3. Clay-slate with Stig- 

 maria Jicoides and 

 Coal. 



5. Sandstone and Coal. 



DeTonian. 



Devonian. 



Devonian. 



As the materials which form this table, and the description I 

 have given, were collected from verbal information and the little 

 that I saw, they must only be taken as giving a general outline of 

 the chief geological features of this district, which will shortly be 

 published in St. Petersburg with detail and accuracy. 



Up to the present time little or nothing has been known about the 

 existence of coal upon the eastern side of the Urals. At many 

 places it has, however, been discovered, as at Geogorshina, Irbit- 

 skeeya, Vershene, etc. The general dip at these places is S.W. 

 towards the Urals. In the northern parts it is more anthracitio 

 than in the south, but this seems to be connected with the fact that 

 there it is more bent and contorted, owing to its approaching more 

 closely to the crystalline rocks. Some specimens from the above- 

 mentioned localities had this character, and they were also vexy 

 friable. Their friability resulted from the numerous small joints by 

 which they were traversed. Some of these joints were stained with 

 iron, others held a small quantity of loose carbonaceous dust, whilst 

 a few contained a white talcose mineral. The thickest seam yet 

 found on this eastern side of the Urals is between six and seven feet, 

 but this is divided by some clay partings. The thickest seam in 

 Eussia is, I believe, in the Solekamsk district on the Eiver Luma, 



