324 Notices of Memoirs — F. Bitter von Hauer. 



Eruptive rocks occur, melaphyre, porphyrite, etc. 



One colour is used for the Carpathian sandstone. It is not 

 attempted to divide it into Cretaceous and Eocene divisions ; the 

 Nummulitic beds, however, are separately mapped : the conglomerates 

 connected with the Eocene are described as many thousands of feet 

 thick. 



The varieties of Trachytic eruptive rocks of Eocene age seem to 

 be numerous. 



2. The Southern Transylvanian and Banat Mountains. 



The crystalline rocks are represented by mica schist and gneiss, 

 for which one colour is used, hornblende and chlorite schists being 

 fi'equently intercalated. In one district eruptive quartz -porphyry has 

 broken through these ; in one place granite is in contact with Per- 

 mian strata, at another it contains pieces of sedimentary rock, which 

 seem to be carboniferous, and give a post-carboniferous age to the 

 eruption. Again, Neocomian Limestones have been altered by con- 

 tact with the granite, showing that the granite is here newer than 

 the Lower Cretaceous beds. 



Besides the granite, there are porphyry and tuffs of Cretaceous age, 

 the latter containing Cretaceous plants. 



Of sedimentary rocks in this district we have Carboniferous shales, 

 limestones and sandstones, with Crinoids, Corals, and Plants, a coarse 

 conglomerate being at the base. The Permian exists as greywacke 

 with some red shale, and has trap-ashes connected with it. Fossils 

 have been found, the plants indicate the existence of two or three 

 horizons. The Trias may be present, but details are wanting to 

 enable it to be separately mapped. The Lias is an important forma- 

 tion, from the considerable Coal-bed which it bears in the Steyerdorf 

 district. Both Lower and Middle Lias are present. 



The sandstone between two of the Coal-beds has yielded a rich 

 fossil flora ; the age is probably Am. planoriis zone of Lower Lias. 

 Jurassic beds are present, the A. Murchisonce zone of the Inferior 

 Oolite, probably some of the higher zones, and even the Bath Oolite. 

 At Swinitza the Oolites, though rich in Ammonites, are only six feet 

 thick altogether. 



The Upper Oolite is represented, but its divisions are not sufficiently 

 worked out. Of the Lower Cretaceous some beds are referred to the 

 L. Neocomian and considered to be the age of the Berrias beds, others 

 to the Aptien, viz. Upper beds at Rossfeld. The Upper Neocomian 

 is also shown by beds with Biidistes and Cafrotina. The Upper 

 Cretaceous is represented by beds of the Gosau type, and by beds 

 with Exogyra columha (Cenomahien). 



The Eocene occupies a very much smaller area in the Bauat than 

 in the other districts east and west of Siebenburgen. The newer 

 Tertiaries are represented in the Schylthal by coal-bearing beds ; 

 fossils show them to be of the age of the freshwater Molasse 

 (Miocene). In the neighbourhood of Dobra the Cerithium beds of 

 the Miocene occur. 



3. The Mountains of the Western Transylvania Boundary. 



The crystalline rocks are represented by mica schist, gneiss, and 



