18 
BULLETIN 1365, U. S. DEPARTMENT OF AGKICULTUKE 
Table 10. — Number of squares produced, shed, and developed into open bolls on 
specific nodes of fruiting branches on the vegetative limbs borne by the Acala 
main stalks shown in Table 7, season of 1925 
Nodel 
Node 2 
Node 3 
Nodes 4 to 
last 
Last node 
only 
Branches of 
one node 
only 
Plant No. 
Squares 
o 
a 
> 
3 
b 
Squares 
& 
o 
> 
3 
B 
Squares 
•3 
> 
IB 
X) 
OT 
"3 
b 
Squares 
-3 
a 
o 
1 
SI 
-3 
"3 
Squares 
■3 
© 
Pi 
"3 
> 
© 
-3 
3 
B 
Squares 
1 
c 
8 
3 
O 
It 
B 
•a 
fit 
m 
-3 
8 
3 
O 
B 
-3 
o 
m 
•3 
8 
3 
-3 
o 
S-c 
Ph 
- 
02 
■3 
© 
© 
X) 
o 
j-i 
B 
-a 
■3 
8 
3 
*a 
o 
£ 
xJ 
© 
,3 
-3 
© 
o 
3 
•a 
o 
B 
-3 
a> 
o 
t> 
■3 
a; 
3 
B 
1 
4 
2 
31 
6 
25 
12 
8 
1 

12 
1 
4 
2 
2 

2 
12 
1 
4 
4 
1 
1 
2 
28 
6 
23 
11 
8 
1 
2 
18 
6 
14 
7 
8 


5 

2 


1 
2 
28 
6 
23 
12 
8 
1 
2 
27 
6 
23 
11 
8 


1 


1 

6 
11 
4 
18 
6 
5 
13 
6 
11 

18 
6 
5 
12 

2 

3... 
18 
15 
2 
8 
7 

3 
4 

5... 
8 
7 
2 
7 
7 
2 



1 
1 
1 
1 



6 
n 
7 
n 
8 
9 
7 
7 6 
10 _•. _-_ 
1 
11 
12 
12 
1 

12 
8 

4 
3 

1 
1 

12 
12 

13 
4 
1 
4 
15 
16 
11 
3 
1 
4 
15 
15 
11 

14 
25 
7 
16 
10 

3 
5 
1 
5 
18 
7 
14 
15 
5 
9 
1 

1 
8 
3 
8 
3 
7 
1 


2 
2 

18 
7 
14 
18 
7 
14 




15 

16 
4 
4 


17 

18 
9 
2 
1 
7 
6 

3 
3 

7 
7 


19 
20 
10 
5 
1 
5 
5 

2 
2 

5 
5 

4 
4 

Total 
167 
43 
25.7 
37 
22.2 
142 
104 
73.2 
9 
6.3 
63 
56 
88.9 
3 
4.8 
17 
.... 
16 
94.1 


143 
141 
98.6 
2 
1.4 
125 
118 
94 4 
3 
Percentage 
?, 4 
SHEDDING OF SQUARES FROM SPECIFIC NODES OF FRUITING 
BRANCHES 
Elsewhere in this bulletin the position of a node of a fruiting 
branch upon which a square was borne has been shown to influence 
the length of time required for that square to reach the flowering stage. 
Therefore it seemed of interest to ascertain whether the same in- 
fluence was exerted on the length of time a square persisted on a 
node before it fell and was recorded as a "shed." The ages at the 
time of shedding, for squares that appeared in 10-day intervals 
throughout the seasons of 1924 and 1925, on specific nodes of the 
fruiting branches of the 20 plants of Pima and of Acala cotton, are 
shown in Tables 11 and 12. In collecting the data the ages of the 
squares from the fruiting branches of the main stalks and of the 
secondary stalks or vegetative limbs were recorded separately, and 
they are so presented. In view of the few squares produced beyond 
the third node of fruiting branches in 1924, it was not thought 
advisable to make a class for node 4 in Table 11 for presenting the 
ages of squares which shed from this node, as was done in Table 12 
for 1925. 
In each variety and in both years a general increase in the age at 
which the squares were shed may be noted by comparing the early 
10-day intervals with those later in the season. From the varying 
ages indicated for the nodes in each interval on the Pima, the loca- 
tion on the fruiting branch occupied by a square did not seem con- 
sistently to hasten or to retard the shedding of the square. On the 
