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. 
22 
18 
14 
4 
36 
16 
23 
2 
18 
22 
19 
3 
59 
12 
21 
8 
5 
2 
5 
3 
7 
3 
29 
2 
100 
50 
11 
1 
7 
5 
25 
1 
59 
6 
48 
27 
8 
4 
8 
1 
27 
6 
14 
5 
6 
3 
69 
26 
19 
22 
18 
24 
9 

34 
5 
36 
7 
21 
5 
9 
4 
10 
6 
76 
25 
7 
1 
38 
23 
8 
10 
82 
9 
26 
1 
26 
5 
29 
3 
115 
34 
40 
6 
18 
13 
9 
1 
21 
5 
74 
22 
74 
36 
10 
9 
65 
19 
57 
57 
80 
18 
55 
12 
« 
10 
Total. 
15196-K-E. 
17144-L-I.. 
17190-L-I.. 
17125-L-L. 
17159-L-F . 
17132-L-J.. 
17133-L-L . 
17165-L-B. 
17185-L-C. 
15196- K-C. 
17144-L-J.. 
17146-L-G. 
17190-L-I.. 
17125-L-N. 
17159-L-G. 
17132-L-K. 
17133-L-0. 
17165-L-C . 
17185-L-D. 
17144-L-K. 
17146-L-I.. 
17190-L-J.. 
17125-L-P. 
17128-L-K. 
17159-L-H. 
17173-L-0. 
17132-L-L. 
17133-L-Q. 
17165-L-D. 
17167-L-J.. 
17185-L-F. 
15196- K-J 
17190-L-K 
17125-L-T 
17128-L-O 
17159-L-I 
17171-L-L 
17132-L-M 
17133-L-S 
17165-L-F 
17167-L-M 
17167-L-K 
15196- K-K. 
17144-L-M. 
17146-L-H. 
17190-L-L. 
17128-L-P. 
17159-L-J.. 
17171-L-M. 
17173-L-P . 
17133-L-U. 
17165-L-H. 
17167-L-O. 
Hard 
....do 
....do 
Hard and soft. 
....do 
Soft 
....do 
....do 
....do 
Hard 
....do 
....do.. 
....do 
Hard and soft. 
....do........ 
Soft 
....do 
....do 
....do. 
Hard.... 
....do 
....do 
Hard and soft. 
....do 
....do 
....do 
Soft 
....do 
....do 
....do 
....do 
Hard 
....do 
Hard and soft. 
....do 
....do. 
....do 
Soft 
....do 
....do 
....do 
....do 
Hard 
....do 
....do 
....do 
Hard and soft. 
....do 
....do 
....do 
Soft 
....do 
....do 
FIRST MIDDLINGS STOCK. 
lOxx, llxx, 12xx. 
lOx 
lOxx 
(?) 
(?) 
(?) ■ 
(?) 
lOxx 
lOxx 
SECOND MIDDLINGS STOCK. 
12xx, 13xx, 14xx . 
lOx 
llxx, 12xx 
llxx 
(?) 
(?) - 
(?) 
(?) 
lOxx 
lOxx 
THIRD MIDDLINGS STOCK. 
lOx, llx... 
llx, 12XX.. 
lOxx, llxx . 
(?) 
(?).. 
(?) 
(?) 
(?) 
(?)-... 
lOxx.. 
14xxx. 
lOxx.. 
FOURTH MnDDLINGS STOCK. 
llxx, 12xx, 14xx. 
llxx, 12xx 
(?) 
(?) 
(?) 
llxxx, 12xx.... . 
(?) 
(?) 
12xx 
(?) 
.(?) ---- 
FIFTH MIDDLINGS STOCK. 
llxx, 12xx, 14xx. 
10X, llx.. 
llxx, 12xx 
llxx, 12xx 
(?) 
(?) 
12xx 
(?) 
(?) 
12xx 
(?) 
