CONTENTS 



Page. 



Origin of the term "Graham flour" 7 



Definitions of Graham flour 9 



Conditions of the trade 9 



Examination of Graham flour 13 



Methods of obtaining samples 13 



Methods of examining samples 13 



Physical examination 14 



Chemical methods 15 



General description of samples 15 



Results of analyses 16 



Discussion of results of analyses 27 



Samples ground in the Bureau of Chemistry (Table 1) 27 



Samples of true and imitation Graham flours (Tables 2, 3, 4, and 5) 



purchased on the market 28 



Graham flour samples 34 



Imitation Graham flour samples 39 



General average results 48 



Nitrogen content and gliadin number 48 



Comparison of samples from the same .millers at different times 49 



Comparison of samples of imitation Graham flours 53 



General discussion on milling Graham flour 53 



Wheat meals, or improperly called whole- wheat flours 54 



Labeling of Graham flour 55 



Summary 56 



Definitions of milling and chemical terms used in this bulletin 57 



5 



