Br. Feistmantel — Bohemian Coal Fauna and Passage-Bcds. 119 
well-known Prof. F. Römer of the University of Breslau, that he 
considers the Nürschan Gas-coal as corresponding with a similar 
deposit at Klein-Neundorf in Silesia, whick is indeed so. 
Very soon after Herr Stur’s paper, with an amount of facts without 
arguments, a simply but clearly written article by the Bohemian 
local geologist, Prof. Krejci, appeared , 1 wherein the Professor, after 
mauy long years of experience and practice in Bohemian geology, 
has explained the matter in a most natural way. 
Wliile acknowledging the abilities of all the authors, who have 
written on the subject, he yet for good reasons cannot concur either 
in Herr Stur’s or Herr Weiss’s opinions, and he adopts that view 
which I have illustrated so repeatedly. 
He says in the couclusion of his paper (I give the translation) : 
“ The Bohemian Coal-formation, and especially the Pilsen basin, 
forms therefore a connected series of strata, of which the Lower 
portion (Radnitz, Kladno, Pilsen, etc.) is parallel with the Saar- 
brücken Series, the higher portion (Rakonitz Gas-coal) with the 
Cuseler and Leebach Series, while the Nürschan Gas-coal, however, 
has to be put at the base of the Kohlenrothliegendes of the Saarbrück 
basin, or it is analogous with the Otweiler Series , 2 which Classifica- 
tion may decide the present state of the question about the age of 
the Nürschan Gas-coal.” 
This result is the same which I had arrived at in my later papers, 
and this paper of Prof. Krejci was the first energetical contradiction 
of the opinions of those gentlemen I mentioned above. 
But a still more important expression of opinion in that way 
is Dr. A. Fritsck’s presentation of his results of the examinations of 
the Fauna from the Gas-coals before the last Glasgow meeting. Dr. 
A. Fritsch declared the animals to be mostly of Permian character, 
and these beds as passage-beds between Carboniferous and Permian 
in Bohemia, just as I did, and as Prof. Krejci stated again, and this 
after duly considering both kinds of organisms. 
Thus Herr Stur and Herr Weiss had a very short time the satis- 
faction of having contradicted my views, as they have been so 
evidently re-established by our best local geologists and paleeon- 
tologists, and we can always suppose that good local geologists, who 
are also excellently acquainted with all other relations, will and can 
decide a question better than a visitor, who only casually examines 
the subject. 
I feit obliged to bring this subject forward, in the Geological 
Magazine, in order to give English readers an indication where 
to find, if required, the several papers on this question, so impor- 
tant in its bearings on the subject of the boundaries of the Permo- 
Carboniferous formation in general, and by way of caution as to 
Herr Stur’s publications in that direction. But here again, in 
medio virtus. Where plants only occur, they may decide the 
horizon, if they are analogous with known and already determined 
1 Sitzungsb. d. k. böhm. Gesellsch. d. Wissensch. 1874. 
2 These are the passage-beds, to which 1 also referred the Nürschan Gas-coal. 
