J. J. Griffith 395 



(d) clue attention to the construction of river and leat embankments 

 and proper care of existing ones; 



(e) selection of stock, usually cattle, least susceptible to lead 

 poisoning for grazing affected pastures; 



(/) giving a large area of unaffected along vvitli the affected land 

 for grazing so as to avoid close confinement to poisoned herbage ; 



(g) allowing the washing of pastures by rain after floods before 

 further grazing; 



(A) fencing off the very worst of the poisoned land. See Photograph 

 "V"; 



(i) threshing contaminated hay before it is supplied to the animals; 



(j) the strict avoidance of utilising mine wastes from ditches, etc., 

 for any purpose that may lead to injury to land or stock. 



In conclusion I wish to thank Dr E. J. Russell for several valuable 

 suggestions, and also the Commissioner of Agriculture for Wales, 

 C. Bryner Jones, Esquire, for his kind interest in the work. 



{Received May lOlh, 1919.) 



