232 DOMAIN XI. DECOMPOSED. 



of which such gravel as we are now speak- 

 ing of ,might be produced. These strata 

 seem to rise up from under the secondary, 

 where they are intersected by the road ; 

 and, for as much as appears, are not of 

 great thickness, so that they cannot have 

 afforded the materials of this gravel direct- 

 ly, though they may have done so indi- 

 rectly, or through the medium of the red 

 sandstone ; that is to say, a primary rock 

 of which they are the remains, may have 

 afforded materials for the gravel in the 

 sandstone ; and this sandstone may, in its 

 turn, have afforded the materials of the 

 present soil, and particularly the gravel 

 contained in it. 



" Pudding-stones being very liable to 

 decomposition, have probably, in most 

 countries, afforded a large proportion of 

 the loose gravel now found in the soil. 

 The mountains, or at least hills, of this 

 rock, which are found in many places, 

 prove the <>reat extent of such decomposi- 

 tion. Mount Kigi, for instance, on the 



