ON NATIONAL GEOLOGICAL SURVEYS : — EUROPE. 



237 



The details of Coal Measures, Cliff Sections, &c, are given on sheets 

 of 'Vertical Sections,' 3s. 6d. each. 



An ' Index Map,' scale four miles to the inch (1 : 253,440) has been 

 published of "Wales and the adjacent districts, in six sheets, price 3s. 6d. 

 each. An Index Map of the whole of England and Wales, upon the 

 same scale, is now in progress. 



In all maps of the United Kingdom the meridian is Greenwich. 



The publication of the Maps of England dates from about 1839, 

 those of Ireland from 1855, of Scotland from 1859. 



The number of maps and sections published is shown in the following 

 table > :— 



The prices of the 1-inch maps are from Is. 6d. to 8s. 6d. for Eng- 

 land (a few detailed drift maps at higher prices) ; Is. 6d. to 3s. for 

 Ireland ; 4s. to 6s. for Scotland ; of the 6-inch maps, 4s. to 6s. 



The 'Memoirs' of the Geological Survey date from 1845. Four 

 volumes were consecutively numbered ; vol. 1 and vol. 2 (in two parts) 

 contain several papers. The other two volumes and all later ' Memoirs' 

 are each confined to one subject or district. 



Memoirs or Explanations of sheets of the map have been issued since 

 1859 ; those published are — for England, 49 ; Ireland, 92 ; Scotland, 17. 



British fossils are described in ' Decades ' (thirteen published, from 

 1849) and ' Monographs ' (four published, from 1859). 



'Mineral Statistics' were published annually from 1853 to 1882; 

 but in 1883 the Mining Record Office, in which these were prepared, was 

 removed to the Home Office, and the statistics are now issued as parts of 

 the Reports of the Inspectors of Mines. 



No official general map has been issued by the survey, but the follow- 

 ing maps, on scales varying from seven to eleven and a half miles to 

 the inch, have been published by the directors of the respective surveys ; 

 they are reductions of survey work to date : British Islands, by A. C. 

 Ramsay, 1878 ; England and Wales, by A. C. Ramsay, 4th ed. 1879 ; 

 Ireland, by J. B. Jukes, 1867 ; Ireland, by E. Hull, L878 ; Scotland, by 

 A. Geikie, 1876. 



1 A Catalogue of the Publications of the Geological Survey of tlie United Kingdom 

 to 1884 has been issued, with index maps, pp. 95, price 1*. 



