232 report — 1884. 



Russia. 



This survey l was commenced in 1882 ; the director is B. Cheresheff. 



The publications comprise Reports in 8vo., and Memoirs in 4to ; the 

 latter are illustrated by maps and plates ; some of the Memoirs are descrip- 

 tive of sheets of the maps, others of certain formations in various districts. 



The Reports are in Russian only ; the Memoirs have title in French 

 (' Memoires du Comite geologique '), and a translation or precis in 

 German. 



The map is on the scale of 1 : 420,000 ; to be completed in 154 sheets; 

 3 sheets are published. The meridian is Pulkowa, 30° 19' B. of Greenwich. 



The map has explanations and title in Erench : — ' Carte geologique 

 generate de la Russie d'Burope.' 



A map of the Urals, prepared by the mining engineers, has been 

 published by A. Karpinsky — ' Geologische Karte des Ostabhanges des 

 Urals,' 3 sheets, 1884. Scale 1 : 420,000 ; with enlarged parts of 

 1 : 210,000. 



Saxony. 



Konigliclie Geologische Landesuntersuchung von Sachsen (Leipzig). 



This survey dates from 1872 ; the publications from 1877. 2 The direc- 

 tor has from the commencement been Hermann Credner. There are 

 eight assistant geologists. 



The scale for mapping and publication is 1 : 25,000 ; the meridian i» 

 Ferro, 18° 9' "W. of Greenwich. The maps — ' Geologische Special- Karte 

 des Konigreiches Sachsen,' are contoured at intervals of 5 metres on 

 the lowlands and 10 metres on the hills. 



The division of the maps, as regards lines of latitude and longitude,- 

 is the same as in the Prussian maps. The maps of Saxony have a special 

 numbering of their own, but most of those now published would be con- 

 tained within Grad-Abth. 58 and 72 of the large Prussian map. 



The maps show all the drift- deposits, the soils being sometimes noted 

 and described in detail. In some cases a separate edition, showing only 

 the solid rock, is issued. There are also special issues for certain mining 

 districts. 



Much attention is paid to the petrological variations in the crystalline 

 rocks, these being noted by letters and signs. 



Thirty-five sheets are published, all in the western part of Saxony, 

 but those in the extreme south-west are not yet issued. The price of each 

 sheet is 2 marks ; of the accompanying ' Erlauterung ' 1 mark. 



A general map has been published by the director, ' Uebersichtskarte 

 des Sachsischen Granulitgebirges und seiner Umgebung,' scale 

 1 : 100,000, 1884 ; price, with Erlauterung, 5 marks. 



1 For descriptions of this Survey, and of its publications, see Nature, vol. xxix. 

 p< 93 ; xxx. p. 608 ; Geol. Mag., dec. iii. vol. i., p. 84, 1884. 



2 Detailed descriptions of the work and publications of the Survey of Saxony have 

 been published by the director (H. Credner) in Mittheil, des Vereinsfiir Erdhunde zu 

 Leipzig, 1877 and 1880. 



