10 
BULLETIN 1096, U. S. DEPAETMEXT OF AGEICULTUEE. 
For the purpose of determining hulls from the fiber content and 
from the protein content in mixtures of meal and hulls the following 
formulas have been developed : 
Formula 1. 
Let X=the hulls 
Then 100-X=the meal 
0.675X+0.047 (10(>-X)=fiber 
0.628X+4.7=fiber 
fiber-4.7 
X 
0.62S 
Formula 2. 
Let A^=hiills 
Then 100 -X=meal 
0.054X+0.517 (100-X)=protein 
0.054X+51.7 -0.517X=protein 
-0.463X=protein - 51 .7 
51.7— protein 
X= 
0.463 
Table 12. — Basis for calculating hull content of mixtures of hulls and meal from fiber 
and protein content. 
Hulls. 
Fiber. 
Protein. 
Hulls. 
Fiber. 
Protein. 
HuUs. 
Fiber. 
Proteia. 
Hulls. 
Fiber. 
Proteia. 
Perct. 
Perct. 
Perct. 
Perct. 
Perct. 
Perct. 
, Per ct. 
Perct. 
Perct. 
Perct. 
Perct. 
Per ct. 

4.7 
51.7 
26 
21.0 
39.7 
52 
37.4 
27.6 
78 
53.7 
15.6 
1 
5.3 
51.2 
27 
21.7 
39.2 
1 53 
38.0 
27.2 
79 
54.3 
15:1 
2 
6.0 
50.8 
28 
22.3 
38.7 
i 54 
38.6 
26.7 
80 
54.9 
14.7 
3 
6.6 
50.3 
29 
22.9 
38.3 
I 55 
39.2 
26.2 
81 
55.6 
14.2 
4 
7.2 
49.8 
30 
23.5 
37.8 
56 
39.9 
25.8 
82 
56.2 
13.7 
5 
7.8 
49.4 
31 
24.2 
37.3 
57 
40.5 
25.3 
83 
56.8 
13.3 
6 
8.5 
48.9 
32 
24.8 
36.9 
58 
41.1 
24.8 
84 
57.4 
12.8 
7 
9.1 
48.5 
33 
25.4 
36.4 
•59 
41.8 
24.4 : 
85 
58.0 
12.3 
8 
9.7 
48.0 
34 
26.0 
36.0 
"60 
42.4 
23.9 
86 
58.7 
11.9 
9 
10.3 
47.5 
35 
26.7 
35.5 
61 
43.0 
23.5 [ 
87 
59.3 
11..4 
10 
11.0 
47.1 
36 
27.3 
35.0 
62 
43.6 
23.0 ' 
88 
60.0 
11.0 
11 
11.6 
46.6 
37 
27.9 
34.6 
63 
44.3 
22.5 
89 
60. 6 
10.5 
12 
12.2 
46.1 
38 
28.6 
34.1 
&4 
44.9 
22.1 
90 
61.2 
10.0 
13 
12.9 
45.7 
39 
29.2 
33.6 
65 
45.5 
2L6 , 
91 
61.8 
9.6 
14 
13.5 
45.2 
40 
29.8 
33.2 
66 
46.1 
21.1 
92 
62.5 
9.1 
15 
14.1 
44.8 
41 
30.4 
32.7 
67 
46.8 
20.7 
93 
63.1 
8.6 
16 
14.7 
44.3 
42 
31.1 
32.3 
68 
47.4 
20.2 
94 
63.7 
8.2 
17 
15.4 
43.8 
43 
3L7 
31.8 
69 
48.0 
19.8 
95 
64.4 
7.7 
18 
16.0 
43.4 
44 
32.3 
31.3 
70 
48.7 
19.3 
96 
65.0 
7.3 
19 
16.6 
42.9 
45 
33.0 
30.9 
71 
49.2 
18.8 
97 
65.6 
6.8 
20 
17.3 
42.4 
46 
33.6 
30.4 
72 
49.9 
18.4 1 
98 
66.2 
6.3 
21 
17.9 
42.0 
47 
34.2 
29.9 
73 
50.5 
17.9 , 
99 
66.9 
5.9 
22 
18.5 
41.5 
48 
34.8 
29.5 
74 
51.1 
17.4 , 
100 
67.5 
5.4 
23 
19.1 
41.1 
49 
35.5 
29.0 
75 
51.8 
17.0 ' 
24 
19.8 
40.6 
50 
36.1 
28.6 
76 
52.4 
16.5 
25 
20.4 
40.1 
51 
36.7 
2S.1 
77 
53.0 
16.0 
From the figures given in Table 12, obtained by applying these 
formulas, it is possible to determine the hull content of a mixture 
of meal and hulls from the fiber content or the protein content. 
These determinations can be only approximations, since the fiber in 
hulls and the protein in the meats vary somewhat. They are accu- 
rate enough, however, to be of value in control work and are the 
only measuring sticks for hulls known at present. The methods 
are not sufficiently accurate to make it worth while to reduce the 
products to an equal oil basis, as the oil in the meals does not vary 
