ON NATIONAL GEOLOGICAL SURVEYS : — EUROPE. 225 



Bohemia. — This is a section of the Austrian Survey, under the control 

 of Anton Fritsch ; the maps are those of the ' Neue Special- Karte,' scale 

 1 : 75,000, referred to above. The text is included, as ' Geologische 

 Abtheilung,' in ' Archiv der Naturw. Landesdurchforschung von Bohmen,' 

 with plates and extra maps on various scales. 



Hungary. — This Survey was established as a section of the Austrian 

 Survey in 1868, but was soon after made a distinct body under the title 

 ' Konigliche ungarische geologische Anstalt ; ' its head-quarters and the 

 place of publication is Budapest. But it is still in connection with the- 

 central institution at Yienna, and an abstract of its work appears in 

 the Verhandlung. 



The first director was Max von Hantken, who was succeeded in 1882 

 by Johann Bockh. The survey is done on the scale of 1 : 28,800. 



The publications date from 1871. These are in Hungarian, but a 

 German version is given in ' Mittheilungen, aus dem Jahrb. k. n. geol. 

 Anstalt,' dating from 1872. About 22 sheets of the map are published. 



Bavaria. 



Bureau der Geognostischen Untersuchung des Konigreichs Bay em (Munich). 



The survey was commenced in 1851, under C. W. von Giimbel, the 

 present director. The publications date from 1858 ; they have been 

 issued at Gotha, but in future will be published at Cassel. 



The field work is done on various scales, from 1 : 5,000 to 1 : 25,000 ; 

 the publication is usually on the scale of 1 : 100,000, but in special 

 cases 1 : 50,000. 



Two meridians are used on the maps — Ferro (18° 9' W. of Green- 

 wich) and Munich (11° 36' E. of Greenwich). The maps are not con- 

 toured. 



Explanations of separate sheets are not published, but the maps 

 are grouped, for purposes of explanation, as follows : — 



1 ' Geognostische Beschreibung des bayerischen Alpengebirges und 

 seines Vorlandes ' (southern frontier), 5 maps. 96 marks. 1861. 



2. ' Geog. Besch. des ostbayerischen Grenzgebirges ' (Bayreuth, 

 Ratisbon, Passau), 5 maps. 108 marks. 1868. 



3. ' Geog. Besch. des Fichtelgebirges und Frankenwaldes ' (N. of Bay- 

 reuth), 2 maps. 70 marks. 1879. 



There is no official general map ; but the director has published 

 the following, without text : — ' Geog. Uebersichts- Karte des Konigreichs 

 Bayern,' Munich, 1858, 1 : 500,000. Price 17'20 marks. 



Belgium. 



Service de la Carte Geologique de la Belgique (Brussels). 



This survey is conducted as a part of the ' Musee Royal d'Histoire 

 Naturelle de Belgique ' (Brussels). The work is executed under the 

 1 Commission de Controle de la Carte Geologique de la Belgique,' com- 

 1884. Q 



