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 i 
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 5§ 
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 
2* 
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 
Yes 
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-OO 
(?) 
332 
11080- K-00 
Yes 
555 
