﻿280 Notices of Memoirs — Dr. Ch. Barrois — Devonian of Brest. 

 nsroTiciES oif" nvcE^vcoii^s. 



I. —Note sur le terrain Devonien de la Eade de Brest. By 

 Dr. Ch. Barrois. (Ann. de la See. Geol. du Nord, vol. iv. p. 59.) 

 rnHE Devonian strata of Britanny are found scattered here and there 

 J_ in the synclinal hollows of the Silurian beds, and have formed 

 the subject of numerous papers by many eminent French geologists. 

 They consists of sandstones, grauwacke, limestones, and schists, 

 and are divided by the author into five sections, each characterized 

 by its distinct assemblage of fossils. M. Barrois carefully describes 

 these several divisions and their contained fauna ; and discusses their 

 l^robable equivalents in other regions. His views on this latter 

 point will be best gathered from the following table, which he has 

 provisionally drawn up. 



Divisions of the Lowes, Devonian. 



Eade de Brest. 



Nassau. 



Ardennes, Eifel. 



1 1 1 Schists of Fret. 

 M o & )> Schists of Pors- 

 ,_■ o guen. 

 J 



Schists of Wissenbach. 



Iron Ore of Fourmies, with 

 ^■pirifer cultrijugatus. 







Grauwacke of Hierges (base). 

 Red Schists of Vireux and 



Burnot. 

 Black Sandstone of Vireux. 



i o Foliated schists, 

 |j^ § 1 slates. 



. " ^ 1 Limestone. 

 M ^ Grauwacke. 



11 1 Slates. 

 |3 ). Limestone. 

 g" i Grauwacke. 



O o I 



J, ^ Slates of AUe. Lime- 

 "l-S i_ stone of Bouillon. 

 ^ o ' Grauwacke of Mon- 

 '■- J tigny. 



O m 



2 a; g 



S 1 1 1 White Sandstone. 

 -^ -g .2 1 Iron Ore. 



•^ cj S 1 



Taunus Sandstone. 

 Johannisberg Ore. 



Anor Sandstone. 







Gedinian. 



IT. — The Geology of the Northern Part of the English Lake 

 District. [Desci'iption of Quarter-sheet 101 S.E. of the 

 Geological Survey Map of England and Wales.] By J. Clifton 

 Ward, F.G.S., etc. 8vo. pp. 132. (London. 1876.) 



THIS Memoir, the first issued by the Geological Survey in de- 

 scription of the Lake District, is devoted to an account of the 

 geology of the country around Keswick, including the lakes of 

 UUswater, Thurlmere, Derwentwater, Bassenthwaite, Crummock 

 Water, Buttermere and Ennerdale. Mr, Ward commences with a 

 brief account of the Physical Geography, and then gives a general 

 description of the rocks ; these embrace the Skiddaw Slate, the 

 Volcanic Series of Borrowdale (Green Slates and Porphyries), the 

 Basement Conglomerate (often called Upper Old Eed Sandstone), the 

 Carboniferous Limestone, Glacial Deposits and Alluvium. Besides 



