Dr. Feistmantel '■ — Bohemian Coal Fauna and Fassage-Bcds. 111 
stones (arooses) with a richly Kaolinic cement, and including nu- 
merous silicified coniferous stems of the genus Araucarites in the 
sarae condition as we find them in Northern Bohemia in the true 
Permian forraation. Of these Red Sandstones I gave lately two 
sketches in my Versteinerungen der bdlim. Kohlenformation, Cassel, 
1S76, pl. xiii. 
These Red Sandstones are mostly developed in the Southern 
part; we find them on the railway (frorn Pilsen to Furth, in 
Bavaria), near Weipernitz, and especially near Zwug, Rothon- 
jezd, 1 Auherzen, etc. Also liere we find numerous stems of Arauca- 
rites, and I have no doubt these Red Sandstones are truly Permian. 2 
/. General View oe the Strata in the Pilsen Basin. 
(descending order.) 
a. With Araucarites. 
b. Spherosiderites, with animal-remains of Permian affini- 
ties near Ledec and Zilow. 
Shales with Carboniferous Flora. 
Coal-seam. 
Nürschan Gas-coal, with Carboniferous Flora and a Fauna 
of generally Permian character. From this horizon 
Dr. A. Fritsch has made his largest collections. 
3. Lower Coal-seam ( Shales and Spherosiderites with Carboniferous Flora. 
District ( Coal-seam. 
Every one studying this table will perceive that No. 1 is truly 
Permian, No. 3 is truly Carboniferous, and No. 2 must be taken as 
a passage-bed, as I have represented it in my later papers, 8 while 
in the first papers I took it as lowest Permian, judging from the 
animal-remains onlv. 
Dr. Anton Fritsch, before the Glasgow meeting, pronounced the 
Nürschan Gas-coal also as a “ passage-bed,” a view which I had ad- 
vocated already three years ago (1873). The historical development 
of the different opinions I give further on. 
2. The Coal-field of Kladno-Balconitz. 
a . The Rakonitz Gas-coal, locally called “Schwarte.” 
This Coal-field is in the north- westem portion of the area men- 
tioned above. It extends generally E.N.E., and is the richest of the 
Bohemian Coal-fields. There is the same Classification here as in 
the Pilsen Coal-basin. 
The Lower Coal-seam District. 
This lies immediately on Silurian rocks, and has a northern dip ; 
the Southern boundary runs from the locality Kralup (twenty 
English miles north of Prague) westwards across the localities 
Minitz, Wotwowitz, Zakolan, Brandeisl, Kladno, Lahna, Ruda, 
Rakonitz, Lubna, Petrowitz, and so on. 
1 This village Rothonjezd (Roth = red) has certainly obtained its name from the 
red colour of the soil, which is caused by the decomposed Red Sandstones. 
2 Professor Krejci of Prague is also of the same opinion. 
3 Jahrb. d. k. k. geolog. Reichsanst. 1873 ; Abh. d. k. bohm. Gesellscli. d. 
Wissenschaften, 1874; Yerst. d. bohm. Kohlenablagerungen, Cassel, 1874. 
1. Red Sandstones. 
2. Upper Coal-seam J 
District } 
