MICROSCOPICAL, EXAMINATION OF FLOUR. 



27 



Table 32. — Results of examination of mill streams employed in the manufacture of a 

 clear flour (sample No. 11079-K-JJ) milled from hard wheat. 



Stock. 



Bran 



particles. 



Hairs. 



Total. 



196 



165 



361 



120 



121 



241 



100 



103 



203 



28 



24 



52 



46 



45 



91 



55 



26 



81 



56 



27 



83 



87 



31 



118 



151 



58 



209 



87 



32 



119 



82 



68 



150 



First break 



Third break (head) , 



Third break (tail) 



Fifth middlings 



Sixth middlings (head) 



Sixth middlings (tail) 



Seventh middlings (head) . 



First sizings 



First tailings (head) 



First tailings (tail) 



22 per cent clear flour J 



1 Composited from the mill streams listed above it. 

 GENERAL CONCLUSIONS ON CLEAR FLOURS. 



1. The commercial grades of so-called clear flours ranged from h\ 

 to 52 per cent. 



2. The average total offal count obtained on all commercial clear 

 flours examined was 273. This amount was decidedly in excess of 

 the amount obtained on the commercial grades already considered. 



3. As in the case of the other grades, clear flours showed a wide 

 variation in the total offal count obtained on products from different 

 mills. 



LOW-GRADE FLOURS. 



The low-grade flour is supposed to be made from low-grade mill 

 stocks, as might be inferred from the designation applied to this 

 class of products. As already stated, the better stocks, for the most 

 part, are diverted into the higher grades. The streams entering 

 into the composition of the low-grade flours are usually more or less 

 specky, due to the presence of offal material. For this reason it is 

 quite impossible to obtain an accurate count on such a flour. In 

 fact, a casual microscopical examination is usually all that is neces- 

 sary to determine the quality of the flour. 



LOW-GRADE FLOURS MILLED FROM HARD "WHEATS. 



Eleven low-grade flours milled from hard wheats were examined, 

 with the results shown in Table 33. The commercial grades ranged 

 from 2 to 10 per cent, some of the samples being bleached and others 

 unbleached. 



Table 33. — Results of examination of low-grade flours "milled from hard wheats. 



Sample No. 



Commer- 

 cial grade. 



Bleached. 



Bran 

 particles. 



Hairs. 



Total. 



11066- K 



"Per cent 



low- 

 grade." 

 2 

 2i 

 24' 

 24 

 3 

 2-5 

 5 

 5 

 8 

 6 

 10 



(?) 



243 

 310 

 340 

 310 

 252 

 175 

 353 

 274 

 269 

 169 

 317 



91 

 129 

 131 

 112 

 155 



88 

 301 

 335 

 264 

 163 

 238 



334 



15118-K 



No 



439 



15119-K 





471 



15120-K 





422 



15156- K-D 



No... 



407 



15148- K-X 



No... 



263 



11080- K-HH 



No 



654 



11080- K-II 



Yes.. 



609 



11029- K-D 



(?)... 



533 



11072- K-00 



(?)... 



332 



1 1080- K-00 



Yes . 



555 









