1863.] murchisox — pekmiax of Bohemia. 299 



with and resting on sandstone and the coarse lower conglome- 

 rate. 



My own method of dividing the series, such as it was presented to 

 me in a section from the south of Liebestadtl to Seniil, is as follows, 

 irrespective of the exact places of the igneous rocks in other dis- 

 tricts : — 1st. Overlying red marls and sandstones (see figure, p. 301, 

 Nos. 1-5), which in the sequel will be noticed as possible equivalents 

 in time of the Zechstein of Northern Germany. 2nd. Dark-coloured 

 bituminous shale, with some limestone, coal, and many organic re- 

 mains, including numerous Fishes, and passing into sandstone and 

 grits, with abundance of Plants (6-10). 3rd. Lower sandstones and 

 conglomerates (1 1-13). 



This triplex series has been subdivided by the Austrian Surveyors 

 into eight parts, each part distinguished on the map by a different 

 colour. To these are to be added the igneous rocks called melaphyr- 

 and felsite-porphyry, as well as certain members of basaltic rock • 

 whilst thin seams of coal and limestone also form integral parts of 

 this compound group*. 



* As my inspection of this tract was hasty, I cannot pretend to affirm that 

 the details vrhich I describe in this section are applicable to the whole of the 

 vide Permian region lying to the south of the Riesengebirge. According to the 

 table of colours hi the Austrian Geological Map, No. IX., the tract around 

 Liebestadtl is occupied by sandstone and schist, marked No. 14, whilst two other 

 subdivisions, wliich^ponstitute the 'upper stage' of the Austrian Surveyors, consist 

 of schists and marls, with hornstone and bituminous schist (Brandschiefer and 

 brownish-red argillaceous beds), the Nos. 11 and 12 of the map. As I nowhere 

 saw such an order of superposition, I have not alluded to it In fact, all the 

 dark-coloured schistose and bituminous rocks which I saw between Liebestadtl 

 and Semil pass distinctly under the sandstone to the south of the Liebestadtl 

 station, and rest on older sandstones and conglomerates. It is, indeed, evi- 

 dent, from an inspection of the two Austrian maps only (Nos. IX. and X.), 

 that the general succession is that which I have indicated. Thus, in the eastern 

 portion of the sheet No. IX., we find that on the flanks of the crystalline rocks 

 of the Riesengebirge, the lower conglomerates and sandstones, with some schists, 

 are followed by other sandstones, the arkose of the authors, and, thirdly, by the 

 widely spread red sandstones and marls (the No. 14 of the Austrian Table), 

 which range from Trautenau and Pilnekaw on the east to Liebestadtl and 

 Lomnitz on the west. 



Again, one of the arkose- sandstones, which underlies No. 14 on the north, 

 or towards the Riesengebirge, rises again in the south, and throws the overlying 

 beds, No. 14, into a trough. It is specially in the western half of the sheet 

 No. IX., or the neighbourhood of Hohenelbe, that the bituminous schists occur, 

 and, where I saw them, they most assuredly underlie the red sandstones and marls 

 south of Liebestadtl, as in my section. Since the arrows inserted on the map, as 

 regards this tract, indicate the south-easterly dip correctly, and are in accordance 

 with my section, it is probable that, in the complication of colours used, an error 

 may have arisen, for which the original observer is not responsible. The suc- 

 cession which I found in this section is exactly analogous to that which I for- 

 merly described as occurring at -Braunau, far to the east, where limestones and 

 bituminous schists, with Palceoniscus, &c, reposing on older sandstone and con- 

 glomerate, are surmounted by red sandstone, &c. (See ' Siluria,' 2nd edit. p. 343.) 

 In the table of colours of the Austrian Geological Map, the igneous rocks 

 termed felsit-porphyry and melaphyr are placed above all the divisions of this 

 group, from which I presume that the author, M. Jokely, wished to show that 

 these eruptive rocks traverse all the strata, and occasionally overlie them. From 

 my observation, however, I should infer that these rocks arc for the most part 

 regularly associated with several members of the group. Thus, near Semil, 



