ON NATIONAL GEOLOGICAL SURVEYS : — EUROPE. 



237 



), with 

 ildliam, 



nado a 

 jikic as 



)y De la 

 he was 



r. De la 

 •, Arch. 



ivhon the 

 d to that 

 le United 

 entirely, 

 Scotland. 

 fty-seven, 

 )rs, three 

 reologists, 

 •e General 



le on the 

 the G-inch 

 I has been 

 maps have 

 ,inly on the 

 [iployed for 



100 feet 

 maps ot 

 maps, on 

 )ut heights 



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

 of 'Vertical Sections,' 3s. Gd. 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. G(7. 

 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 pablished is shown in the following 

 table ' :— 



^ 



1-inch map 



(1 : 6:5,3<i()) 



(sheets or quar 



ter-sheets in 



Enarland and 



Wales) 

 (!-inch maps (f: 10,500) 

 Horizontal sections 

 Vertical sections . 



> 



I 



J 



Solid. 



Drift edition of solid 



map 

 Drift only 



ISS'I 

 4!t [ 



Total 



Total 



457 



:?54 

 108 



77 



1,050 



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

 land (a few detailed drift maps at higher prices) ; If. Gd. to 3s. for 

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



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 

 185!^ ; those published are — for England, 40 ; 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; 

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

 removed to the Home Ofiice, 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, 18G7 ; Ireland, by E. Hull, 1878 ; Scotland, by 

 A. Geikie, 1876. 



' A Catahgnc of the Pnhlications of the Geological Siirrei/ of th. United Kingdom 

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



