MICROSCOPICAL EXAMINATION OF FLOUR. 
13 
Tests similar to those made on break roll products were made 
on middlings stock. Middlings are usually recognized as being the 
medium granular particles of the endosperm resulting from the crack- 
ing of the wheat kernel on the break rolls. After proper purification 
or removal of the branny material, the middlings are milled, on the 
reduction rolls, to the fineness of flour. The results of experimental 
work done on middlings stocks are recorded in Table 11. 
Table 11. — Results of examination of middlings stocks. 
Sample No, 
Type of wheat. 
Bolting cloth. 
Bran 
particles. 
Hairs. 
Total. 
15196- K-E... 
Hard 
FIRST MIDDLINGS STOCK. 
lOxx, llxx, 12xx 
22 
14 
36 
23 
18 
19 
59 
21 
5 
5 
7 
29 
100 
11 
7 
25 
59 
48 
8 
8 
27 
14 
6 
69 
19 
18 
9 
34 
36 
21 
9 
10 
76 
7 
38 
8 
82 
26 
26 
29 
115 
40 
18 
9 
21 
74 
74 
10 
65 
57 
80 
55 
43 
18 
4 
16 
2 
22 
3 
- 12 
8 
2 
3 
3 
2 
50 
1 
5 
1 
6 
. 27 
4 
1 
6 
5 
3 
26 
22 
24 

5 
7 
5 
4 
6 
25 
1 
23 
10 
9 
1 
5 
2 
24 
6 
13 
1 
5 
22 
36 
9 
19 
57 
18 
12 
10 
40 
17144-L-I 
do 
.do 
lOx 
18 
17190-L-I.. 
lOxx 
17125-L-L 
Hard and soft 
..do 
(?) 
(?) 
25 
17159- L-F. 
40 
17132-L-J 
Soft 
. ..do... 
(?) 
(?) 
22 
17133-L-L . 
71 
17165-L-B 
..do 
lOxx 
17185-L-C 
do 
lOxx 
15195- K-C. 
Hard 
SECOND MIDDLINGS STOCK. 
12xx, 13xx, 14xx 
17144-L-J . 
do 
lOx .. 
17146-L-G. 
.do 
llxx, 12xx 
17190-L-I.. . 
.do 
llxx 
150 
17125- L-N 
(?) 
12 
17159- L-G. . 
.do 
(?).. 
17132-L-K 
Soft 
do 
(?) 
(?) 
26 
17133-L-0 
65 
17165- L-C 
. ..do 
lOxx 
75 
17185-L-D. 
.do 
lOxx . . 
17144-L-K... . 
Hard 
THIRD MIDDLINGS STOCK. 
lOx, llx 
17146-L-I.. . 
do 
llx, 12xx 
33 
17190-L-J 
do 
10 KX, llXX 
19 
17125-L-P 
(?) 
9 
17128-L-K 
.do 
(?).. 
95 
17159-L-H... 
do 
(?) 
17173-L-0 
.do 
(?).. 
42 
17132-L-L 
Soft 
.do 
(?) 
(?) 
9 
17133-L-Q 
39 
17165-L-D 
.do 
lOxx . 
33 
17167-L-J 
do 
.do 
26 
17185-L-F 
lOxx. 
13 
15196- K-J 
Hard 
FOURTH MIDDLINGS STOCK, 
llxx, 12xx, 14xx. 
16 
17190-L-K 
.do 
llxx, 12xx 
101 
17125-L-T 
(?) 
8 
17128-L-0 
do 
(?) 
61 
17159-L-I 
.do 
(?) 
18 
17171-L-L 
. .do 
91 
17132-L-M 
Soft... 
do 
(?)--■ 
(?) 
27 
17133-L-S 
31 
17165-L-F 
do 
do 
12xx 
31 
17167-L-M 
(?).. 
139 
17167-L-K -.. 
do 
(?).. 
46 
15196- K-K 
Hard 
FIFTH MIDDLINGS STOCK, 
llxx, 12xx, 14xx 
31 
17144-L-M 
do 
lOx, llx 
10 
17146-L-H 
do 
llxx, 12xx 
26 
17190-L-L 
do 
llxx, 12xx 
96 
17128- L-P 
(?) - 
110 
17159- L-J 
. ..do 
(?) 
19 
17171-L-M 
do 
12xx 
84 
17173-L-P 
do 
(?).. 
114 
17133-L-U 
Soft 
(?) - .. : - .... 
98 
17165- L-H 
12xx 
67 
17167-L-0 
do 
(?) 
53 
