712 SEC. 16. GEOLOGY AND MINING. 



3290. Geological Section from Paris to Brest. 



Delesse, Paris. 



This outline section has been executed, under the direction of M. Mille, 

 Chief Engineer of Roads and Bridges, by Messrs. Torger, Delesse, and 

 Guillier. It is on a scale of 40,000 for the length, and 20 times larger for the 

 heights. It follows the line of the railway which, leaving Paris, passes by 

 Bonneval, Chateaudun, Vendome, Tours, Angers, Nantes, Vannes, and 

 Quimper, and comes out at Brest. Many classic regions are traversed in this 

 itinerary, as the Paris basin, Beauce, Touraine, the Valley of the Loire, and a 

 part of Brittany. 



On this section can be followed the succession of the different geological 

 stages, which are marked the whole length of the railway ; their position is 

 determined by their height above the level of the sea, so that, notwithstanding 

 the exaggeration of the scale of elevation, it is easy to ascertain their relative 

 position. 



In the regions of La Beauce the subterranean sources of water supply have 

 been specially studied. 



This section also affords information as to the materials of construction 

 furnished by each geological stage, and the vegetable soil and the nature of 

 the crops. 



Geological studies of this kind are eminently useful if they precede the for- 

 mation of railways, because they supply a knowledge of the difficulties likely 

 to be encountered during the course of construction, as well as the resources 

 which may be reckoned on in each region traversed ; and even when made 

 after the completion of a railway, they supply facts highly useful to science 

 and industry. 



In pursuance of the orders of M. de Eranqueville, Director-General of 

 Bridges and Railways, these geological surveys have been carried on by 

 M. Mille over a great part of France. 



3291. Original Sketches, illustrative of Geological 



Scenery and sections, taken by Dr. Buckland between 1815 and 

 1840. The Oxford University Museum, Geological Section. 



1. Landslip, Lyme Regis. 



2. View of Coast near Lyme Regis. 



3. View of Coast near Sidmouth. 



4. View of Coast near Sidmouth. 



5. Submarine Forest of Stolford near Bridgewater. 



6. View of Coast between Charmouth and Abbotsbury. 



7. Bird's eye view of Dartmoor and south coast of Devon. 



8. View of Vale of Severn between Malverns and the Cotswolds. 



9. Coast view between Beerhead and Axmouth. 



10. Parallel roads of Glen Roy. 



1 1 . View of Exmouth. 



12. Brent Tor near Tavistock. 



13. Dunolly Castle near Oban. 



14. View of Shapton Sands. 



15. View of south coast of Lyme Regis with Portland in the 

 distance. 



3292. Geology. Collection of specimens of felspars and 

 amphibolitic rocks from Belgium and the French Ardennes. This 



