h ocAstetter ^ Gumhel—Eozobn in Bohemia and Bavaria. 309 



Laurentian and Huronian systems of Canada, and Murchison's 

 "fundamental gneiss" of Scotland. In Eastern Bavaria Herr 

 Giimbel distinguishes (1) the Hercynian clay-slate ; (2) the Her- 

 cynian mica-schist (Upper Laurentian) ; (3) the Hercynian gneiss 

 of Bavaria and Bohemia (comprehending the Donau gneiss, or gneiss 

 of the Danube) ; (4) the Bojic gneiss (3 and 4 together , constituting 

 the "primitive gneiss,'" equivalent to the Laurentian system). 



The Eozoon and the serpentinous marble, or ophicalcite, of which 

 it forms part, are then carefully described, — both the Canadian 

 Eozoon, after Dawson, Carpenter, and Hunt, and the Bavarian, from 

 Herr Giimbel's own careful researches, assisted by Herm Reber and 

 Schwager. The gneiss and its associated rocks and minerals are 

 described, especially the limestone and its Eozoonal structure, 

 together with some obscure organic remains, possibly Bryozoan. 

 This marble is equivalent to that of Krum^nau, treated of by Dr. 

 Hochstetter. There are also bands of marble higher up, in the 

 Hercynian clay-slate, on the south and south-e^st of the Fichtel- 

 gebu-ge, near Wunsiedel, answering to the Cambrian or Huronian 

 zone ; and this marble contains traces of Eozoon sufficiently distinct 

 to be termed Eozoon Bavaricum by Herr Gumbel. Dr. A. Fritsch 

 has found Annelid-marks in this grauwacke at Przibram ; and Dr. 

 Eeuss has detected Crinoidal and Foraminiferal remains in a lime- 

 stone equivalent to the above near Eeichenstein. 



Herr Gumbel finds Eozoon Ganadense also in the famous pargasite 

 of Finland ; traces of Eozoon in a piece of coccohte-limestone from 

 New York ; in the serpentinous marble of Tunsberg ; in the chon- 

 droditic marble of Boden, Saxony ; in a serpentinous blackish 

 marble from Hodrisch, Hungary ; and in a seipentine-marble from 

 Reichenbach, Silesia. 



Characteristic Eozoonal structures, and some obsciu-e organisms, 

 axe very well figured in plate i. ; and two specimens of the Eozoon- 

 rock itself, prepared with acid, are nature -printed with colour in 

 plates ii. and iii. T. E. J. 



IIL — On the Jostedal-br^ Glaciers in Norway. 



By C. M. Doughty, B.A. 



[8vo. London, Stanford, 1866, pp. 14, with a coloured chart.] 



THE author describes the chief ice-streams which form the outlets 

 of the southern slope of the great Jostedal-brge.^ Glaciers, 

 he says, may be divided into two kinds — one consisting of a stream 

 and reservoir, like those common in the Alps ; and the other forming, 

 as it were, a crust to a large tract of land, and having several 

 streams or outflows, like that at present covering Greenland. The 

 Norwegian Glaciers, for the most part, are certainly of this nature, 

 from the peculiar character of the country — a great Alpine boss, as 



' The Jostedal-brse lies between the parallels of 61° and 62^ It is a ridge of 

 irregular shape, some sixty miles long, but of inconsiderable breadth. 



