ON NATIONAL GEOLOGICAL SURVEYS : — EUROPE. 231 



About 26 ' Lieferungen ' are issued, containing 142 sheets ; which, for 

 convenience of reference, may be grouped as follows : — 



Berlin, Potsdam, &c 27 



Wettin, Jena, &c. 84 



Wiesbaden, Frankfort, &c 13 



Saarbruck, &c 18 



142 



Although all maps fit into the complete system of 'Grad-Abth.' and 

 * Blatt.' the earlier sheets published have a different set of numbers. The 

 position of each map however, and its relation to the new system of 

 numbering, can be seen from the index-map on each ' Lieferungen.' 



A descriptive test (' Erlauterung ') is issued with each map. 



There are also ' Abhandlungen,' dealing with special districts, palaeon- 

 tology, &c. These date from 1872. They contain numerous plates and 

 maps, the latter being sometimes separately issued. 



The ' Jahrbuch,' dating from 1880, contains shorter papers, reports &c. 



A reduction of the above-mentioned map — ' Geologische Karte der 

 Provinz Preussen,' scale 1 : 100,000, is in course of publication. 



Numei'ous general maps of Germany or of parts of it are published, 

 the most important of which is that of H. von Dechen — ' Geologische Karte 

 der Rheinprovinz und der Provinz Westfalen,' in 35 sheets, scale 1 : 80,000. 

 A continuation of this map, on the same scale, being a reduction of the 

 new Prussian survey, is now being prepared. The Wiesbaden sheet 

 (numbered 35) was issued in 1882. 



Geological surveys of some German States have been made on the 

 scale of 1 : 50,000, not all directly by the Government ; but the great survey 

 above described will probably absorb these, and will re-map the districts 

 on the larger scale. 



Amongst these local surveys are the following : — - 



Baden, made by Zittel and. Sandberger. 



Hesse. ' Geologische Specialkarte des Grossherzogthums Hessen und 

 der angrenzenden Landesgebiete.' This survey, under the direction of 

 R. Ludwig, is in eighteen sheets, with text. It was made by the 

 * Mittelrheinischer Geologischer Verein' (Darmstadt), and was published 

 from 1856 to 1872. 



Upper Silesia. — A ' Specialkarte der Oberschlesischen Bergrevier.' 

 scale 1 : 10,000, is published by the 'k Oberbergamt in Breslau ' ; in 

 ' Lieferungen,' of ten or more sheets. The price of each sheet is 1^ mark. 



Roumania. 



Biurouhu Geologicih Romanic (Buchurest). 



Established in 1882, under the direction of Gregoriii Stefaneseu, 

 for the purpose of providing materials for the International Geological 

 Map of Europe. One Report has been published (' Anuarulii Biuroului 

 Geologicii,' anulii 1882-1883, JS T o. 1, pp. 114, 1*84). The rocks contained 

 within the kingdom which are briefly described in this Report, are : — 

 Crystalline Schists (Archaean), Jurassic, Eocene, Miocene, Pliocene and 

 Quaternary. This Report contains descriptions, with analyses, of mineral 

 springs. 



