76 GEOLOGY. 



granite, porphyritic granite ; serpentine, amphibolite ; orthoclase- 

 granite, red granite, and " granite gneiss." Details of some ores of 

 copper and iron are given. They occur in all the formations save the 

 quartz rock, and are stated to be invariably associated with igneous 

 outbursts. H. M. 



Klipstein, Dr. A. v. Beitrage zur geologischen und topographischen 

 Kenntniss der ostlichen Alpen. [Contribution to a geological 

 knowledge of the E. Alps.] Bd. ii. 2 Abth, 4to, 93 pp., 2 plates. 



Contains papers on the following subjects : — 1. On the Gerlos and 

 Krimml district ; 2. Ahrenthal ; 3. The Campil valley and its neigh- 

 bourhood ; 4, The mountains between Corfara and the Livinalongo ; 

 5. On the ^eastern part of the Montenegro chain and on Avisio ; 6. 

 The volcanic rocks of Creppa, Cappleia, Gimnela, &c. ; 7. The moun- 

 tains between the Gaderthal and the HoUensteiner valley ; 8. Geolo- 

 gical fragments. G. A. L. 



Knop, Dr. A. Ueber die hydrographischen Beziehungen zwischen 

 der Donau und der Aachquelle im Badischen Oberlande. [Hydro- 

 graphic relations between the Danube and the Aach.] N. JaJirh. 

 Heft ix. pp. 942-958. 

 Discussion of the question whether the Aach takes its origin from 

 the Danube. Between Immendingen and Mohringen the waters of 

 the Danube sink into fissures in Jurassic limestone. Do they pass 

 underground and reappear in the Aach? 14 kilos, of aniline red 

 were thrown into one of the fissures into which the Danube sinks, but 

 the source of the Aach was not coloured : this experiment was made 

 in 1869. The author seeks to explain its failure, and suggests 

 chemical and mechanical experiments to test the question again. 

 Recommends addition of common salt or of chloride of magnesium 

 (mother liquor from neighbouring salt-works), and testing its progress 

 by precipitation with a silver salt. P. W. E,. 



Koch, Dr. G. A. Die Fervallgruppe. Verh. Ic.-k. geol. Eeichs. pp. 226- 



228. 

 Notes on this part of the Silvretta district : derives its name from 

 the red colour to which the gneiss weathers ; rocks chiefly gneiss, 

 hornblende- and mica-schists, greywacke slates, &c. E. B. T. 



Koninck, Prof. L. G. de. Notice sur le calcaire de Malowka et sur 

 la signification des fossiles qu'il renferme. [The Limestone of 

 Malowka and the meaning of its fossils.] Bull. Soc. Imp. Nat. 

 Moscou, no. 3, p. 165. 



Krejci, J. Ueber die Lagerung des Pilsner Steinkohlenbeckens. 

 [The Stratigraphy of the Pilsen Coal-field.] Sitz. 7c. hohm. Ges. 

 Wis?. (1874 vol.) p. 241 (published in 1875). 



