100 GEOLOGY. 



Stokes, Arthur H. Notes on the Coal Seam and Geology of Suderoe. 



Trans. Chesterfield and Derby Inst, of Eng. vol. ii. part viii. 



pp. 320-335, plates xxxvii.-xl. (maps, sketch, section, rocks). 

 The island, the most southern of the Faroe group, is mountainous 

 and precipitous, and consists of beds of trap, basalt, and dolerite. 

 The coal-bearing beds, which are in the midst of the trap, may be 

 50 feet thick ; the seams are thin ; and it is estimated that there may 

 be fourteen millions of tons in the small coal-field. Parts of the coal 

 have been altered by the trap, the beds of which appeared moulded 

 upon each other, as if one had hardened before the next flowed over 

 it ; and it is concluded that the coal was deposited in an interval 

 between submarine eruptions. Analyses of 3 coals are given, and the 

 minerals and rocks of the island are noticed. W. W. 



Stolpe, M. Om Siljanstraktens sandstenar. [Sandstones of the 

 Siljan district.] Geol. foren. Stockholm Forhandl. bdt. i. pp. 17- 

 28, pi. ii. 



Gives a number of observations respecting the order of stratification 

 in the neighbourhood of the Siljan lake (Dalecarlia). A geological map 

 is given, in which the following divisions are distinguished : — Leptcena 

 limestone, sandstones, and upper graptolite-schists. 2. Trinucleus 

 schists, CAasmops limestone, and Oi^thoceras limestone. 3. Diegerberg 

 sandstone. 4. Porphyry and Eurite-grits (Felsites). 5. Granite. 

 6. Hyperite (Gabbro and Hypersthenite). G. A. L. 



. Beskrifning till Kartbladet " Bjorksund." Sveriges geol. un- 



tersok. [Description of map No. 53, Swedish Geological Survey.] 

 Pp. 15. 



Studer, B. Geologisches von Aargletscher. [Geology of the Aar 

 Glacier.] 12mo. 5 pp., 1 plate. Berne. 



— — . On the junction of the granite and crystalline schists on the 



left bank of the Aar-glacier. Mittheil. naturf. Gesell. Bern. 

 The granite is shown to be the newer of the two. 



. Die Gotthard-Bahn. [The St. Gothard Eailway.] Petermann's 



Mittheilungen, Bd. xx. pp. 339-343. 

 Lecture to the Nat.-Hist. Soc. of Berne. The points of geological 

 interest in piercing the tunnel are discussed. 



Stur, D. Momentaner Stand meiner TJntersuchungen iiber die 



ausseralpinen Ablagerungen der Steinkohlenformation und des 



Eothliegendes in Oesterreich. [Present condition of my researches 



on the Extra- Alpine deposits of the Carboniferous formation and 



Rothliegende in Austria.] Yerh. k.-k. geol. Beichs. pp. 189- 



209. 



A full account of the characters and divisions of the Carboniferous 



formation and Rothliegende of Austria, outside the Alps, as known to 



the author. The stratigraphical portion of this investigation is not 



finally completed, and it will be followed by an examination of the 



plant-remains found in the deposits in question. H. A. N. 



