H,ONS., 
| J Jones Lith: 
| 
The numerous gulleys are, however, aimost- mvariavry 
covered with a thin stratum of porous sandy clay and gravel, 
with a pretty strong clay substratum. 
Even if the ridges of paleozoic rocks were less steep, and 
better clad with soil, it is evident if they absorbed much of 
the rainfall, that it would be conveyed to great depths 
beneath the surface, and could not again appear as springs 
except under very peculiar circumstances. 
The granite rocks may retain small supplies of water, which 
slowly percolating through the close seams of such a rock, 
will reappear in small patches of swamp or in springs, but 
these latter are seldom found of large volume. 
Streams of water which are seen to issue from granite 
rocks, are usually traceable to some swamp or morass in the 
/ 
