01 



six inches to the mile. A large map on rollers, formed 

 of 60 sheets of the 6 in. Ordnance Survey mounted 

 together. 



Lent bi/ the Geological Survey of Scotland, Prof. A. 



1876. Oeikie, F.R.S., Director. 



This map is an illustration of the detailed work of the 

 geological survey of Scotland. The whole county of Ayrshire 

 is surveyed on this scale, though only the mineral districts are 

 published on these maps, the general map of the country being 

 on the scale of 1 in. to the mile. At the foot of the map a 

 MS. sheet is inserted to show the stages of progress in the field 

 work of the survey. Two specimens are likewise given of the 

 detailed vertical sections on the scale of 40 ft. to the inch, 

 which are published in illustration of these coalfields. 



196. Selection of maps and publications to illustrate 

 the progress of the Geological Survey of Spain. 



Presented by the Commission of the Geological Map 



1877. of Spain, Madrid. 



The following are exhibited : 



(a.) Geological map of the coalfield of San Juan de las 

 Abadesas, province of Gerona, by Amalio Maestre, Madrid, 1855. 

 Scale, -g^j-j-oip or more than 1 in. to the mile. Shows five different 

 colours. 



(6.) Geological map of the province of Palencia, by Don 

 Casiano de Prado, Member of the Commission of the Geological 

 Map of Spain, 1856. Scale, ^^Viro' or a hout 7 miles to the 

 inch. Shows 10 colours. 



(c.) Geological map of the province of Valladolid, by Don 

 Casiano de Prado, 1854. Scale, 4 \, , or about 7 miles to the 

 inch. Shows three colours. 



(d.) Geological map of the province of Madrid. Published by 

 the Council of Statistics of the Kingdom of 1864, and formed by 

 Don Casiano de Prado, Engineer of Mines, Member of the Com- 

 mission of the Spanish Geological Map, 1854. 



(e.) Graphical scale of altitudes of the northern part of the 

 province of Palencia. Made by the direction of Don Casiauo 

 of Prado, 1856. 



(/.) Geological and stratigraphical map of the mountains of 

 the province of Palencia, by Don Casiano de Prado, 1857. 



((/.) Sections of the north and north-east of the province of 

 Madrid, including the Sierra di la Yruela and the Cerros de 

 Concha within the limits of La Puebla de la Muger Muerta. 



197. Geological and topographical atlas accompanying 

 the Report of the Geological Exploration of the Fortieth 

 Parallel, made by the authority of the Honourable the 

 Secretary of War under the direction of Brigadier and 

 Brevet-Major- General A. A. Humphreys, Chief of En- 



U 69149. F, 



