6 BULLETIN 644, U. S. DEPARTMENT OF AGRICULTURE. 
pound of fiber from 10,785 to 8,089. This reduction of 2,696 seeds 
is equal to 67 bolls of 40 seeds each, or 60 bolls of 45 seeds each, or 
an average of 64 bolls, which means a saving of 25 per cent in the 
number of bolls to be picked. 
Table II. — Relation of the lint index to the number of seeds and of 5-lockcd 
bolls required to produce 1 pound of cotton fiber. 
Required to produce 1 pound of fiber. I 
Average 
differ- L 
| 
Number of bolls. 1 number 
100 seeds, 
the lint 
percent- 
age 
being 33. 
Lint index. 
of bolls for 
Number 
i each 10 
of seeds. 
Bolls of 
Bolls of 
pomes 
Average. ; ^ lint 
40 seeds. 
45 seeds. 
index. 
Grams. 
4.0 
11.325 
2?3 
251 
267 
8.1 
4.2 
10, 785 
269 
239 
254 i 
8.5 
4.4 
10,295 
257 
228 
242 
54 
8.9 
4.6 
9.847 
246 
218 
232 
9.3 
4.8 
9,437 
235 
209 
222 
9.7 
5.0 
9,080 
226 
201 
213 
I 10.1 
5.2 
8,711 
217 : 193 
205 ) 
f 10.5 
5.4 
8,388 
209 186 
197 10.9 
5.6 
8.0S9 
202 
179 
190 1 36 
< 11.3 
5.8 
7.810 
195 
173 
184 
11.8 
6.0 
7,550 
188 
167 
177 U 
I 12.2 
6.2 
7,306 
182 
162 
172 1 
f 12.6 
6.4 
7,078 
176 
157 i 166 II 
13.0 
6.6 
6,S64 
171 
152 1 161 } 25 
\ 13.4 
6.8 
6,661 
166 
148 : 157 
13.8 
7.0 
6,472 
161 
143 152 J |t 14. 2 
7.2 
6,291 
157 
139 148 ll 'f 14.6 
7.4 
6,121 
153 
136 144 15.0 
7.6 
5,960 
149 132 140 \ 19 \{ 15.4 
7.8 
5,807 
145 129 137 1 15.8 
8.0 
5, 662 
141 
125 
133 
I 16.2 
Total reductions due to an increase 
of 4 grams in weight of 100 seeds. .. 5, 653 
142 
126 
134 
Increasing the lint index from 4 to 5 reduces the number of seeds 
to be harvested to secure 1 pound of cotton fiber from 11,325 to 9,060, 
or from 267 bolls to 213 bolls. Expressed in terms of bolls to be 
picked, this is an average reduction of 54 bolls per pound of fiber. In 
other words, a variety with a lint index of 4 will run 25.3 per cent 
more bolls to the pound of fiber than a variety with a lint index of 5. 
In terms of labor employed, this means that if two men are picking 
at the same rate or number of bolls per hour, the one picking in a 
variet} T having a lint index of 5 will gather the same quantity of fiber 
in 8 hours that the other, working in a variety with a lint index 
of 4, will gather in 10 hours. 
If a variety having a lint index of 6 be compared with one having a 
lint index of 4, it will be seen that 90 bolls more, or 50.8 per cent, must 
be gathered in the smaller seeded variety than in the larger seeded in 
order to secure a pound of fiber. In the one case the laborer must 
pick 88,500 bolls, while in the other he must gather some 133,500 bolls 
to 2ret a bale of lint cotton. TVe have seen from Table I that the same 
