go GEOLOGY. 



PosEPNY, F. Die Blei- urid Galmei-Erzlagerstatten von Raibl in 

 Kiirnten. [Lead- and Zinc-ore deposits of Raibl, Carinthia.] 

 Jahrb. k.-k. geol. Reichs. Bd. xxiii. Heft iv. pp. 317-424, 3 plates. 



The metalliferous limestone and dolomite of the Raibl district occurs 

 below the Raibl shales. All the Plant and Fish remains of these beds 

 have come from one locality ; with them occur Ammonites Aon and 

 A. Archelaus, Halohia Lommeli, &c. The metalliferous limestone con- 

 tains scarcely any fossils, but is paralleled with the Hallstadt limestone. 

 The nature of the Lead and Zinc deposits is described, and their genesis 

 discussed, details concerning the impregnations of ore in the rock being 

 illustrated by coloured lithographic facsimiles. These deposits are 

 neither in beds nor in veins, yet they partake of the nature of both ; 

 they were evidently formed after the rock, and are of secondary origin ; 

 the deposits are frequently geodal with concentric layers of different 

 ores. The ores have apparently been introduced into cavities and 

 fissures dissolved out of the limestone, elimination of the calcareous 

 matter and infiltration of the metallic minerals perhaps going on 

 together. They are intimately connected with faults and joints, along 

 which the dissolving waters have apparently moved and eaten away the 

 rock irregularly. Analogous features in the deposits of lead and zinc 

 ores in England and other countries are also noticed. E. B. T. 



. l)ie Eruptivgesteinsgange von Mies in Bohmen. [Veins of 



eruptive rock at Mies, Bohemia.] Yerh. k.-k. geol. Reichs. 



pp. 237-239. 



Gives reasons for concluding that certain masses, which intersect the 



ciay-slates of the neighbourhood, are trappean veins, instead of being 



sandstones, as some authorities have maintained. H. A. N. 



Post, H. von. Kalkgranit funnen i Sverige. [Calciferous granite 

 found in Sweden.] Geol. foren. Stockholm Forhandl. bdt. i. 

 pp. 3-7. 



Note of occurrence in East-Gothland. 



QuiQTJEREz [A.]. [Notes on the caverns of the Bernese Jura.] 

 Indicateur d'Antiquites Suisses, p. 512. 



R.iDDE, — . Vier Yortrage iiber den Kaukasus. [Four essays on the 

 Caucasus.] 4to. 72 pp., 2 pi. Gotha. 



Ramsay, Prof. A. C. The Physical History of the Yalley of the 

 Rhine. Quart. Journ. Geol. Soc. vol. xxx. pp. 81-93 (map and 

 woodcuts). 



Between Basel and Bingen there is a broad lake-like valley, mainly 

 occupied by modern and old alluvia of the river, fringed by Miocene 

 beds, which rise from beneath the alluvium, and lie against the older 

 rocks — these last forming the hill-ranges of the district. Between 

 Bingen and Rolandseck a narrow gorge is cut through the older rocks. 



The author believes that during parts of the Miocene period the 

 drainage of the broad valley was from north to south, into the area now 



