Issued July 15, 1911. 



U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF CHEMISTRY BULLETIN No. 138. 



H. W. WILEY, Chief of Bureau. 



TRANSLOCATION OF PLANT FOOD AND ELABORA- 

 TION OF ORGANIC PLANT MATERIAL 

 IN WHEAT SEEDLINGS, 



BY 



J. A. LE CLERC AND J. F. BREAZEALE, 



Laboratory of Plant Physiological Chemistry. 



WASHINGTON: 



GOVERNMENT PRINTING OFFICE. 

 1911. 



