OS THE CIRCULATION OF UNDERGROUND WATERS. 



293 



This water is one of the purest commonly found, .and with care to avoid 

 surface contamination would be most suitable for domestic and for table 

 use. For brewing purposes, however, and especially for ale-brewing, it is 



Fig. 2.— Section of Llanrhaiadr (Pentre Meadows) Bore hole. 

 June 14, 1875. 



Siu-faceof GrounJ. Yds. ft. in. 



G ravel i 





Clay 



Red SaiKl 



Red Sandstone Rock, 

 uubottomed. 



y '<. 



too soft, and therefore cannot be recommended, though for stout-brewing 

 it would oflfer some advantages, and should a suitable supply not be 

 obtainable additional hardness might be added to the water artificially. 



