0\ THE CIRCL'LATION OF rNDERGROLND WATERS. 



289 



Well sunk at South Wales Portland Cement and Lime Works, Lim., 

 Penarth, near Cardiff, in 1892. 



Collected b}' the Cardiff Naturalists' Society. 



The water level varies within a range of 2.5 feet. Not connected witli 

 the tides, but a regular ebb and flow within limits of 4 or 5 feet. 

 Analysis shows the water to be highly charged with CaSO^, almost to 

 saturation ; also much CaCO^. Smaller quantity of MgS04, NaCl, MgCl.^. 



Information from the manager (W. J. Cooper, Esq.) through Cardiff 

 Naturalists' Society. 



1894. ' u 



