LETTER OF SUBMITTAL. 



DECEMBER 19, 1888. 



SIR : I have the honor to submit herewith the manuscript of Bulletin 

 No. 20, being the report of experiments in the manufacture of sugar from 

 sorghum conducted by your direction during the season of 1888. 

 Kespectfully, 



H. W. WILEY, 



Chemist. 

 Hon. NORMAN J. COLMAN, 



Commissioner of Agriculture. 



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