16 
BULLETIN 557, U. S. DEPARTMENT OF AGRICULTURE. 
not true of flour color except with wheat which is fairly low in test 
weight and then the color falls somewhat lower than with the heavier 
wheat. This holds true with all three classes of wheat with which 
this comparison was made. 
This table is arranged to bring out such connection as may exist 
between the percentages of sound wheat and flour yield and color. 
By percentage of sound wheat is meant that portion of the sample 
remaining after all damaged kernels, seeds, dirt, and other grains 
have been removed. As in these studies the analyses were made on 
samples prepared for milling and after most of the impurities, such 
as seeds, dirt, and other grains, had been separated, the main factor 
to be considered is damage, other determinations averaging so low as 
to be almost negligible. 
An analysis of Table III from this standpoint reveals a direct con- 
nection between the flour yield and the percentage of sound wheat. 
With all three classes there is a fairly regular decrease in flour yield 
as the percentage of sound wheat decreases. 
Table III. — Relation of weight per bushel and soundness of wheat to flour 
yield and color of bread in hard red spring, hard red winter, and soft red 
winter wheat of the crops of 1911, 1912, and 1913. 
Ranges in percentage of sound wheat. 
95 to 100. 
90 to 94.9. 
85 to 89.9. 
80 to 84.9. 
79.9 or less. Average of all. 
Class of wheat 
and ranges in 
weight per 
bushel 
(pounds). 
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Hard red spring: 
64 to 65 9 
2 
P.ct. 
72 
100 
98 
96. 5 
3 
12 
34 
P.ct. 
73.3 
70.9 
71.1 
71.5 
92.3 
p.ct: 
P.ct. 
P.ct. 
5 
52 
82 
40 
14 
12 
P.ct. 
72.8 
71.4 
71.2 
70.5 
67.1 
95 4 
62 to 63.9.... 
60 to 61.9 
35 71.5 
24 71.6 
96.5 
96 
95.2 
5 
18 
4 
4 
72.2 97.21 
71.1 94.4 6 
70. 1 97. 7 9 
68. 7 95 
n.'s 
95" 
97.5 
95 fi 
58 to 59.9. . . . 
56 to 57.9 
8 
3 
70.8 
67.4 
99.2 
99 
16 
70.9 88 
68.7 95 
67 92 
3 
5 
4 
65.7 
67 
66.5 
66.3 
99.3 
88.4 
91 
94.9 
93 >? 
54 to 55.9. . . 
6 
65.9 
97 
2 
66. 3 93. 3 
72 
31 
69.691.3 12 
Average... 
71.3 
97.7 71 
70.9 95.9 
70. 8 95. 3 19 
91.8 205 
70. 6 95. 7 
Hard red winter: 
64 to 65.9 . 
20 
25 
4 
1 
72. 8 
73.7 
72.4 
73.1 
97 
95 
98 
94 5 
13 73.2 
93. 5 
94.6 
94.7 
1 
6 
8 
2 
1 I 
74.6 97 
n.i 
99 35 
73.1 
95 9 
62 to 63.9. . . . 
60 to 61.9.... 
58 to 59.9 
24 
8 
73. 5 
72.0 
19 
7 
72.5 94.7 
71.3 96.6 
72 ,97. 5 
70 95.8 
67.3 96 
4 
7 
4 
1 
72.2 97. s 7s 
70.3 94.9 34 
69.9 94.6 7 
66.9 94 3 
68. 8 s9 2 
73. 2 95. 1 
71.196 
69. 6 95 
56 to 57 9 
2 
69.3 94.5 
68. 5 94. 2 
54 to 55.9... 
1 
63. 8 91 
66.3 90 
Average... 
50 
73.2 96.3 45 73.2 
94.3 
2s 72.2 95.2 18 
70.7 96 is 
69. 1 95. 4 
159 
72. 3 95. 3 
Soft red winter: 
62 to 63.9.... 
60 to 61.9. . . . 
58 to 59.9. . . . 
56 to 57 9 
17 
18 
2 
70.3 
69.6 
70.4 
95. 8 14 
98. 2 20 
79 2 
69.6 
69.8 
64.2 
95.6 
97.6 
100 
17 
6 
70.693.4 .... 
69. 1 95. 7 9 
70.2 94 8 
69.5 
69.3 
93.7 
92.8 
2 
2 
2 
1 
1 
.....1.1 
67.197"' 
67.9 91 
60.2 84.3 
64.4s9 
6.5. 1 75. 3 
37 
66 
20 
2 
3 
1 
70.195.4 
69.5 96.7 
69 92. 3 
60.2 84.3 
54 to 55.9 
2 
65. 7 95. 1 
65. 3 93. 1 
52 to 53.9... 
65 1 75. 3 
Average... 
37 
69.9 
96. 1 36 
69.4 
97 
31 69.2 95.3 17 
69.4 
93.3 8 
1 
65 
88.6 129 
1 
69. 3 95. 3 
1 
