318 Mr. Horner on the Mineralogy of the Malvern H'llh, 



be a grauwacke-slate, as that name has so very wide a range ; but It is 

 in general much less indurated than any rock I have yet seen, to 

 which that denomination has been applied. 



Whether I am correct or not in the application I have made of 

 the Wernerian names to the individual rocks of the Malvern district, 

 if we consider their geological arrangement, we shall find that they 

 exhibit appearances very inconsistent with the Wernerian system of 

 Geognosy. 



The most remarkable feature of this district is the very great con- 

 trast between the two sides of the range. On the eastern side, a level 

 plain, extending for many miles ; on the western, a constant suc- 

 cession of hills. Now if the unstratified rocks in the centre are 

 to be considered as the oldest, and if the stratified rocks have been 

 deposited upon them, how does it happen that they are only found on 

 one side, that not a vestige of the strata that occur on the western side 

 is to be met with on the eastern, and vice versa, that the red sandstone 

 of the eastern side is not to be found on the western ; at least for 

 three or four miles all along the range, beyond which my observa- 

 tions did not extend. Besides, if the stratified rocks were deposited 

 on the unstratified central rocks, we should expect to find their 

 bearing always parallel to the direction of the range, and their dip 

 uniformly towards the west, corresponding with the slope of the 

 hill, supposing, what is maintained in the Wernerian system, the 

 possibility of a stratified rock being deposited in any other than a 

 horizontal or nearly horizontal position. We should also expect, 

 in so short an extent as that of the Malvern range, that the same 

 kind of stratified rock would always be found next to the unstratified. 

 But I have shewn that neither of these things occur. It is true 

 that the direction of the strata is in general paralld to that of the 

 range J but there are some remarkable exceptions to it, as in the lime- 



