LETTER OF TRANSMITTAL 



U. S. DEPARTMENT OF AGRICULTURE, 



BUREAU OF CHEMISTRY, 

 Washington, D. C., November 14, 1912. 



SIR: I have the honor to submit for your approval a manuscript 

 on " Graham flour," prepared by J. A. Le Clerc and B. R. Jacobs. 

 This manuscript gives the data from the chemical and physical 

 study of many samples of such flour found on the market and in the 

 mills, besides that of samples prepared in the laboratory. The 

 result of this study has a practical bearing on the enforcement of the 

 Food and Drugs Act, inasmuch as it is now perfectly feasible and 

 possible to detect true Graham flour from imitation Graham, made 

 either by the use of a mixture of low-grade products and bran, or by 

 the use of whole wheat meal from which a part of the flour or bran 

 has been abstracted. This study could not have been made without 

 the free and full collaboration of many millers. To them special 

 thanks are due. I recommend the publication of this manuscript 

 as Bulletin No. 164 of the Bureau of Chemistry. 



R. E. DOOLITTLE, 



Acting Chief of Bureau. 

 Hon. JAMES WILSON, 



Secretary of Agriculture. 



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