THE WATER 265 



the cresses that are cultivated at the crystal well- 

 heads near Park House are surely the finest in 

 England ! — good land for arable cultivation, good 

 pasturage, and plenty of woodland for a 

 supply of fuel, and timber for house building. 

 The gault clay near the surface in the vale assists 

 in causing the outflow of water from the chalk, 

 feeding the stream that has for a thousand years 

 worked the mills which have existed there, probably 

 on the same sites. 



