THE PRE-ADAM1TE EARTH. 



cated on the fourth column those at which its direction has been 

 determined. 



202. In laying down upon the map the directions of the several 

 systems, their divisions into such as run between N.W. and S.E., 

 and between N.E. and S.W., becomes very apparent, as will 

 appear by reference to fig. 117, in which the several systems are 

 indicated by peculiar marks as follows : 



203. The systems directed between the N.W. and S.E. run from 

 the Rhine towards Provence and Brittany, and those between 

 the N.E. and S.AV. from Normandy, Brittany, and the Pyrenees 

 towards the Apennines. 



204. The geological dates of these several systems of elevation, 

 determined, as will presently appear by the position of the strata 

 on their flanks and at their bases, are as follows : 



I. System of Vendee raised before the deposition of the Cumbrian 



group. 

 II. System of Finistere raised between the Cumbrian and the green 



slate of Longmynd. 

 10 



