ISiS Dr Boue on the Elevation of Mountain Chains, 



in the hills of Tarere, the chain of Les Maures, and the primi- 

 tive hills of Corsica. 



I have also given examples of fractures in the direction from 

 north to south in Hungary, Styria, and Carinthia, but of an entire- 

 ly different date; certainly more recent than the greensand. (See 

 my Resume for 1832, p. 121, and the Bulletin de la Soc. Geol. 

 de France, vol. iv. p. 75.) But my objections have become 

 useless, since M. de Beaumont now acknowledges the possibility 

 of the parallelism of upheavings (r?dressemens) which have taken 

 place at different epochs. 



The fourth system of elevation is that of the Nethei'lands and 

 the Southern part of Wales. Freisleben and other geologists 

 have pointed out in the beds of the red secondary sandstone and 

 zechstein of Mansfeld, faults and inflections in a direction near- 

 ly from east to west. These accidens seem to M, de Beaumont 

 merely a peculiar case of those irregularities in stratification 

 which are common to all the sedimentary deposits not posterior 

 to the zechstein, from the river Elbe to Wales. In this way he 

 attributes to this system all those singular bendings of the car- 

 boniferous strata of the Netherlands and the Bristol Channel. 

 These movements were anterior to the formation of the secon- 

 dary conglomerates of Malmedy ; as well as that of the mag- 

 nesian conglomerate of England, a rock to which Sedgwick has 

 assigned a date posterior to that of the magnesian limestone of 

 the north of England. 



The coal measures of Sarrebruck covered by the horizontal 

 beds of the Vosges sandstone, must have been affected by that 

 disturbance, and this subject deserves the further consideration 

 of geologists. Now, let us compare what M. de Beaumont 

 tells us about Belgium and the Sarrebruck country, with the ob- 

 jections I made to his first paper in 1830 (J. de Geol. vol. ii. 

 p. 347.), and the examples I gave of recent elevations in the 

 direction from east to west, (Bull, de la Soc. Geol. de France, 

 vol. iv. p. 76.) M. de Beaumont gets over the difficulties by 

 admitting completely his first system, and a return of the same 

 direction in the upheavings. Yet I still contend, that in the coal 

 measures there are irregularities in the stratification which have 

 had their origin in the mode of formation of the deposit, and 

 which arc not to be confounded with dislocations. (See Mem. 



