93 .GEOLOGY. 



Plocq, — . [Artesian Wells at Dunkirk.] Bev. Geol. t. xi. pp. 151, 

 152. 



- Gives sections of two borings, showing much sand and some marly- 

 clay overlying a great thickness of Eocene clay (Ypresian), in which 

 they stop. Gr. A. L. 



Ponzi, Prof. G. Studj sulla geografia naturale e civile dell' Italia, 

 pubblicati per cura della deputazione ministeriale istituita presso 

 la Societa Geografica Italiana. [Essays on the Physical and 

 Political Geography of Italy.] Pp. 250, with atlas. Eom,e. 



Contains a geological map of the Eoman Basin, with explanatory text. 



Popovics, A. B. Geologische Skizze iiber Serbien. [Geological 

 * ■ Sketch of Servia.] Belgrade. 



. Posepny, F. Ueber den inneren Bau der Offenbanyaer Bergbauge- 



gend. [Structure of the Mining District of Offenbanya.] VerJi. 



Ic.-lc. geol. JReicJis. pp. 70-74. 



The veins are mostly lines of dislocation into which ores have been 



subsequently introduced : the eruptive rocks are not the cause of the 



dislocations so much as the eifect. E. B. T. 



^-. Deber einige tektonische Verhaltnisse der Bergbaugegend 



von Boitza in Siebenbiirgen. [Some physical relations of the 



Mining District of Boitza, Styria.] Verh. 7c.-Jc. geol. EeicJis. 



pp. 77-80. 



The veins are partly in augite-porphyry and partly in the dacite dykes, 



which intersect the former, which is Mesozoic, overlain by Tertiary red 



shales and sandstones ; the latter eruptive rock is Tertiary. E. B. T. 



Potter, — . Sur les sables Landeniens. [The Landenian Sands.] 



Bull. Soc. Geol. France. 3 ser. t. ii. pp. 577-579. 



Urges that the true equivalence of the lignitic group of the white 



sands of the Paris Basin must be looked for in the lower portion of the 



Ypres clay. G. A. L. 



Guin, L. Ch. Sol et rivages primitifs du Havre. [Ancient Shores 



of Havre.] Bull. Soc. Geol. Norm. t. ii. fasc. 1, p. 3. 



- Radimsky, V. Das Wieser Bergrevier. [The Wieser Mining Dis- 



trict.] Zeitsch. Berg- Hutt. Ver. Kdrnthen, 1875, no. 15-18. 



Ramsay, Prof. A. C. Geological history of some of the mountain 

 chains and groups of Europe. Lectures at the Eoyal School of 

 Mines. Min. Journ. vol. xlv. pp. 57, 79, 106, 135, 162, 191. 



Rath, Gc. vom. Der Monzoni in siidostlichen Tirol. [The Monzoni 

 in S.E. Tyrol.] Bo7i7i. 



Reich, H. Beschreibung der Diamantbohrung der k.-k. priv. Staats- 



Eisenbahn-Gcsellschaft bei Bohmisch-Brod. [Diamond-boring at 



Bohmisch-Brod.] Jahrh. Ic.-h. BergaJcad. pp. 302-310. 



This bore-hole has been put down by the Austrian State Railway 



Company in searching for a possible extension of the Coal Measures of 



Kladno under the New Red Sandstone plain. The depth reached was 



