. V. MAPS, ETC. 685 



certain extent maintained, they have been attenuated successively in the 

 more recent soils. Moreover, where a soil has been raised on the flanks of 

 mountains, it presents generally a strong declivity, which is well shown by 

 the approach of the horizontal curves, but disappears at a short distance from 

 the mountains. The sixth map of the plate represents the actual seas of 

 France, of which it shows the orography. It indicates also the proportion 

 of carbonate of lime in the marine deposits which form on the shores, the 

 upheaving and subsidence of the coasts, the distribution of the rainfall, &c. 



3232a. Specimens of Charts published by the Navy 

 Department. 



General Direction of the Depot of Marine Charts and 

 Plans, Paris. 



Cherbourg Roads, 1836. 



Directions of currents in the Channel, 1855. 



Coasts of the mouths of the Rh6ne, 1848. 



Coasts of Italy, 1863. 



Approaches to Brest, 1868. 



Island of Ouessant, 1868. 



Guadaloupe, 1874. 



Japan, 1874. 



3236a. Collection of Maps, Plans, Plaster Casts, and 

 Photographs. M. Delagrave, Paris. 



3236b. Map of Travel, setting off by differently coloured 

 tracings the relative antiquity and importance of the Roman 

 roads. M. Hayaux du Tilly, Paris. 



3237. Proposed Itinerary for the Voyage of a Circumnavi- 

 gating Vessel, for 1877. 



2. Also, view and section of a vessel fitted for voyages of obser- 

 vation round the world. 



La Societe des Voyages d* Etudes autour du Monde, Paris. 



These drawings have been executed in the office of the Societe des Forges 

 et Chantiers de la Mediterranee, in accordance with the designs of M. Dupuy 

 de L6me, member of the Institut, and President of the Administrative Council 

 of the Societe des Forges et Chantiers. , 



NOTE. The Societe des Voyages d'Etudes autour du Monde (society for 

 making voyages round the world for scientific observation) is being formed 

 by a number of persons with the intention of creating a new element in the 

 higher branches of practical instruction. 



Its immediate object is to organise regular voyages round the world, in a 

 vessel specially fitted for that purpose, and in which will be found united all 

 the facilities and appliances suitable for developing and acquiring useful 

 knowledge relative to the various branches of science, economic, geographic, 

 and industrial, and particularly for obtaining information on the commercial 

 resources, actual wants, and special tendencies of distant lands. 



This progressive attempt has received the official approbation of the geo- 

 graphical societies of England and France, the French Meteorological Society, 

 the Society for the Encouragement of National (French) Industry, and the 

 Acclimatisation Society. It includes the last-named society among its 

 founders. 



