/l/ Among other satisfactory solutions are those 

 of: Withrow, R. B. , and Withrow, A. P.; Shive, 

 J. W. , and Robbins, W. R.; Thimann. K. V., and 

 Edmondson, Y. H.; Chapman, H. D.; -.rown, S. M. , 

 and Rayner, D. S.; Haas, A. R. C, Steinberg, R. 

 A.; Smith, P. F.; Stewart, W. D. , Youden, W. J., 

 and Arthur, J. M. /2/ To be added twice weekly 

 or as indicated by the appearance of plants. /5/ 

 Equivalent amounts of iron may be supplied as or- 

 ganic iron salts, i.e., iron tartrate or K-Fe-eth- 

 ylene diamine tetra-acetate. 



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