Plate 7.— Salts of Copper on Wheat. Season 1914. .05 per wnt. of Copper in 

 different forms. 



(a) No treatment ; (ta) sulphate ; (c) phosphate ; (d) carbonate ; (e) nitrate ; (f) arsenite. 

 d c b a 



Plate 8.— Salts of Copper on Wheat. Season 1914. .05 per cent, of Copper in 



different forms. 



Roots of plants in Plate 7. 



(a) No treatment ; (ta) sulphate ; (c) phosphate ; (d) carbonate ; (e) nitrate. 



