ON NATIONAL GEOLOGICAL SURVEYS : — EUROPE. 



225 



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

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

 1 : 7"),O00, referred to above. The text is included, as ' Geologische 

 Abtheilnng,' in' Archiv der Naturvv. Landesdurchforschung von Bohmeu,' 

 •with plates and extra maps on various scales. 



HwKjary.- -This Survey was established as a section of the Austrian 

 Survey in 18(58, but was soon after made a distinct body under the title 

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

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

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

 the Verhandlnng. 



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. 



Tho 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 tho map are published. 



Bavakia. 



Bureau der Geognostischen Untersuohimg des Kiitwjreichs Jiayern (]\runich). 



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

 present director. The pablications date from 18.")^ ; they have been 

 issued at Gotha, but in futu-'e will bo 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 : 1<)0,000, but in special 

 cases 1 : 50,000. 



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

 wich) and Munich (11° 3G' 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 ' Geoguostische Beschreibung des bayerischen Alpengebirges und 

 seines Vorlandes ' (southern frontier), 5 maps. 9G marks. 18G1. 



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

 Ratisbon, Passan), 5 maps. 108 marks. 18G8. 



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

 reuth), 2 maps. 70 marks. 1870. 



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

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

 Bayern,' j^lunich, 1858, 1 : 500,000. Price 17-20 marks. 



Bemium. 



Service de la Carte Geologique de la Jielgi'j^ue (Brussels). 



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

 Naturelle de Belgiqnc ' (Brussels), The work is executed under tho 

 'Commission de Controle de la Carte Gcologique de la Belgique,' com- 

 1884. Q 



