EXPERIMENTS WITH SINGLE-STALK COTTON CULTURE. 
29 
materially with the size of the seed if the abundance of lint on the 
surface of the seed remained constant. Conversely, if the abundance 
of lint were not constant, the lint percentages might appear uniform 
even though the size of seed varied considerably. Thus it is desir- 
able to know whether the size of seed and the amount of lint per seed 
were affected by single-stalk culture. The weight in grams of 100 
seeds taken from each of the samples discussed in connection with 
Table XXII is shown in Table XXIII, together with the lint indexes, 
or the grams of lint on 100 seeds, of the same samples. 
Table XXIII. — Weights of 100 seeds and lint indexes (grams of lint on 100 seeds) of 
five different varieties of cotton as determined from samples of seed cotton grown in 
five single-stalk culture experiments with cotton conducted in Louisiana, Arkansas, 
and North Carolina. 
"Weight of 100 seeds (grams). 
Lint indexes= weight of lint on 100 seeds 
(grams). 
Sample. 
R. K. 
Boney. 
John 
He- 
bert. 
J. E. 
Tan- 
ner. 
H. D. 
Sloan. 
L. M. 
San- 
derson. 
R. K. 
Boney. 
John 
He- 
bert. 
J. E. 
Tan- 
ner. 
H. D. 
Sloan. 
L. M. 
San- 
derson. 
Old method: 
No. 1 
9.1 
9.7 
9.4 
10.2 
9.6 
9.5 
8.9 
9.9 
9.5 
10.6 
9.7 
9.8 
9.7 
9.7 
8.9 
10.2 
9.9 
9.4 
9.8 
9.0 
12.0 
13.1 
12.8 
12.6 
13.5 
12.7 
11.9 
11.2 
12.6 
12.2 
9.7 
9.4 
10.2 
10.6 
10.3 
10.3 
9.6 
9.8 
11.1 
10.1 
12.4 
11.2 
11.8 
11.7 
12.6 
11.8 
11.8 
11.7 
11.2 
10.2 
4.9 
5.7 
5.1 
5.7 
5.9 
6.1 
5.2 
5.6 
5.6 
5.0 
5.2 
5.1 
4.8 
4.8 
4.6 
5.3 
4.9 
4.6 
4.8 
4.4 
6.8 
6.8 
6.3 
7.1 
6.6 
6.3 
6.2 
6.0 
6.0 
6.3 
5.7 
5.1 
5.7 
5.7 
5.5 
5.5 
5.2 
6.0 
7.1 
5.9 
7.0 
No. 2 
6.6 
No. 3 
6.9 
No. 4 
7.5 
No.5 
7.4 
Single stalk: 
No. 1 
6.7 
No. 2 
7.0 
No. 3 
6.3 
No, 4 
6.6 
No.5 
6.0 
Average: 
Old method 
Single, stalk 
9.60 
9.68 
9.56 
9.66 
12.80 
12.12 
10.04 
10.18 
11.94 
11.34 
5.46 
5.50 
4.90 
4.80 
6.72 
6.16 
5.54 
5.94 
7.08 
6.52 
It will be seen from Table XXIII that, while there was con- 
siderable variation in the weights of seed representing either of the 
systems of culture, the average weight of 100 seeds was about the 
same for each system. This fact, in addition to the fact that there 
was no significant difference in the percentage of lint, would indicate 
that the density of lint on the seeds was about the same under the 
different systems of culture. That is, we would expect to find 
that the weight of lint per seed did not vary significantly. The 
figures in the second part of Table XXIII show that such was the 
case. The lint index, or the number of grams of lint on 100 seeds, 
is seen to vary only slightly and in direct proportion to the size of 
seed. 
GRADE AND LENGTH OF LINT. 
Samples of lint in each of the experiments discussed in connection 
with Tables XXII and XXIII were submitted to Mr. Fred Taylor, 
cotton technologist of the Bureau of Markets, for a report on the 
grade and length of the lint produced by the different systems of 
culture. Mr. Taylor's report is embodied in Table XXIV. 
