Reviews — Dr. Meusch's JVorwegian Researches. 85 



Yesegonsk and Poshekon ; S. Neketen, Observations on the Use of 

 the terms diluvium, alluvium and eluvium ; V. Domger, Geological 

 Investigations made in the Ekatereuoslav Government, etc. ; E. 

 Shmalgaozen, Observations on Araucarites rhodeanus, Goepp. ; A. 

 Krasnopolsky, On Geological Investigations on the Western Slope 

 of the Urals ; F. Schmidt, Preliminary Account of Investigations on 

 the Baltic Iron-oi'e Deposits ; A. Micbalsky, On Geological Obser- 

 vations made in the Kyleletz Government ; and P. Armashevesky, 

 Account of Investigations made in the Poltava Government. 



W. R. J. 



le IB "V I IB "W^ s. 



Dr. Eeusch's Discovert of Silurian Fossils in the Highly 

 Altered Eocks of Bergen Peninsula in Norway. 



Die fossilien fijhrenden krystallinischen Schiefer von Bergen 

 IN NoRWEGEN VON Dr. Hans H. Reusoh. Autorisirte Deutsche 

 AusGABE VON R. Baldauf. (Leipzig, 1883'.) 



THE announcement of the discovery by Dr. Reusch of Silurian 

 fossils in highly altered rocks has excited so much interest that 

 a German edition of the work in which the details of the discovery 

 are recorded will be heartily welcomed. The work in question 

 consists of 134 octavo pages. It is illustrated by a coloured 

 geological map and section, and by 92 excellent woodcuts. What- 

 ever opinion the reader may form, as to the correctness of some of 

 the author's conclusions, he will readily admit that the work is a 

 most valuable contribution to the literature of a branch of geological 

 science which is at present very little understood. 



After some general remarks on the geology of Norway, and on the 

 difficulties which the field geologist has to contend with in con- 

 sequence of the climate of the country and the sparseness of its 

 population, the author proceeds to describe in greater detail the 

 geological structure of the Bergen peninsula. The highest part 

 of the peninsula lies to the east and attains in the Gulfjeld an 

 elevation of 986 metres. It is composed of saussnrite-gabbro and 

 greenstone (?) and forms a zone of country which extends in the 

 northern part in a north and south, and in the southern part in a 

 north-east and south-east direction. To the south and east of this zone 

 occur the crystalline schists which, in the neighbourhood of Osoren, 

 a town on the south coast of the Bergen peninsula, contain Silurian 

 fossils. They comprise conglomerate, sandstone, micaceous clay-slate 

 (Thonglimmerschiefer), with crystalline limestone, talc-mica-schist, 

 hornblende-schist, gneiss, etc. Rocks of the same series occur at 

 Trengereid in the north-eastern part of the peninsula, and probably 

 also at Bergen, but the author has not discovered fossils in the latter 

 locality. That part of the peninsula which lies between the ai'ea 

 occupied by the Bergen schists and the zone of saussurite-gabbro 

 is denominated by the author the Ulriken gneiss district. The 

 dominant rock is gneiss in many varieties ; sometimes fine-grained 



