Notices of Memoirs — Brief A bstracts. 325 



clayslates, the schistose group occupying a larger area by far than 

 the massive crystalline rocks, granites, Diorites, etc. 



The eruptive rocks are numerous ; red porphyries occur in the 

 Dyas and Trias districts. Lias beds have been altered in one case, 

 here the eruption would be probably of Jurassic age ; Augite- 

 porphyry, Melaphyr, and Syenite (the latter eruptive through Lias) 

 occur. The trachytic rocks are present in three groups, viz. 

 Propylite (Dacite and Greenstone Trachyte), Trachyte proper 

 (Andesite), and Ehyolite. Their eruption took place in newer 

 Tertiary times. 



Of tiae sedimentary rocks the Carboniferous are the oldest in this 

 district. The Permian (Dyas) is probably present ; the separation 

 between it and the Trias being indistinct. The Muschelkalk is pro- 

 bably represented by limestones and Dolomites, but no fossils have 

 been found. Tlie oldest fossils are those of the Lias, but there are 

 no Coal-beds in Lia,s beds in this district. Oolitic beds are found — 

 the Cretaceous are largely developed. The Eossfeld beds (L. 

 Neocomian) contain Amm. cryptoceras; above the Caprotina limestone, 

 beds with Gosau fossils occur. 



The Eocene rocks are thick and cover a large area. Stache has 

 separated them into three groups, viz. Lower Eocene, freshwater 

 mostly, Chara seeds, Faludina, etc. Middle Eocene, marls with 

 NummuUna perforata, limestones with N. Icevigata, and gypsum- 

 bearing beds. Upper Eocene, includes beds which may be of L. 

 Miocene (Aquitanien) age. 



Newer Tertiary beds, — the three stages of the Yienna Tertiaries 

 occur, the Marine, the Sarmatic, and the Cbngeria beds, but they are 

 not always separately mapped. 



The paper ends with a few words on the Transylvania midland 

 district, which is entirely newer Tertiary or Quaternary. — E. B. T. 



5. — Brief Abstracts. 



1. — Beitrae&e zur Kenntniss fossiler Binnenfaunen. By Theodor 

 FucHS. , Jahrbuch der h. k. Geologisclmn Beichsanstalt, Jahrgang 

 1873, Band xxiii. No. 1, pp. 19-26, with 2 plates of fossils. 



IN this paper some new species from the Vienna Tertiaries are 

 described and figured ;. they are as follows : 



From the Congeria Beds. 



Cardium Neumayeri. 



Karreri. 



pseudo-obsoletum. 



Melanopsis- avellana, 



obsoleta. 



Sfurii. 



Dreissenomya intermedia. 



Melania Letochos. 



From the Sarmatic Stage. 



Turbo Aningeri. I Melania applanata. 



Melania suturata. \ Syndosmya sarmatica. 



E. B. T. 



2- — Jones, Prof. T. E. Flint: its Nature, Character, and Adapta- 

 bility for Implements. EeUquice Aquitanicce, parts xiv.,^ xv., pp. 

 202, 205.. 4to. [1874.] 

 Flint,, in one condition or another, is found in most calcareous 



