Dec. 1, 1925 
Leaf-Tissue Fluids of Egyptian Cottons 
1031 
Apparently Egyptian cotton has a greater capacity for the accumula¬ 
tion of chlorides with the march of the season (60 than has Upland 
cotton. 
Table III. — Comparison of the ratio of specific electrical conductivity (k) to freezing- 
point depression (A) in Egyptian, Sea-Island, and Upland cotton , as grown at 
Sacaton, Ariz., in 1922 and 1924 
Variety 
Determinations made in 
1922 
Determinations made in 1924 
First series, 
Aug. 10 to 
Aug. 13 
Second 
series, Aug. 
17 to Aug. 20 
First partial 
series 
Second par¬ 
tial series 
First whole 
series 
Second 
whole 
series 
N 
Mean 
N 
Mean 
N 
Mean 
N 
Mean 
N 
Mean 
N 
Mean 
Egyptian: 
Ashmuni_ 
8 
0.02578 
8 
0.02506 
8 
0.02397 
8 
0.02461 
12 
0.02366 
14 
0.02421 
Zagora___ 
8 
. 02520 
8 
.02470 
8 
. 02401 
8 
. 02447 
12 
. 02394 
14 
. 02389 
Sakel_ 
8 
. 02512 
8 
.02426 
8 
.02254 
8 
. 02311 
12 
. 02278 
15 
.02250 
Pelion.. 
8 
. 02596 
8 
. 02490 
8 
.02406 
8 
.02461 
12 
. 02392 
13 
.02460 
Assili_ 
8 
. 02596 
8 
.02486 
8 
.02291 
8 
.02336 
12 
. 02278 
15 
.02253 
Pima_ 
8 
. 02510 
8 
.02375 
8 
.02329 
8 
. 02301 
11 
. 02282 
13 
.02254 
fifta island 
8 
. 02304 
8 
.02425 
8 
.02304 
11 
.02417 
Upland: 
A PfllfL . __ 
7 
. 02348 
8 
. 02360 
7 
. 02348 
11 
. 02334 
Meade_ 
8 
. 02537 
8 
. 02473 
8 
. 02390 
8 
.02340 
8 
. 02390 
11 
.02296 
Lone Star.. 
8 
.02261 
8 
. 02291 
8 
. 02261 
11 
. 02246 
The question naturally arises as to whether the higher chloride 
content is peculiar to the Pima variety of Egyptian cotton, which 
has developed in the Southwest from a long series of ancestors which 
had been grown under the frequently saline conditions of this region, 
or whether it is a characteristic common to Egyptian cottons in 
general. The results for a series of analyses carried out by a method 
proposed by Lawrence and Harris {12) appear in Table IV. 
Table IV. — Comparison of the chloride content {in terms of grams of Cl per liter) 
in Egyptian } Sea-Island, and Upland cotton, as grown at Sacaton, Ariz., in 1922 
and 1924 
Determinations made in 
1922 
Determinations made in 1924 
Variety 
First series 
Aug. 10 to 
Aug. 13 
Second 
series, Aug. 
17 to Aug. 
20 
First par¬ 
tial series 
Second par¬ 
tial series 
First whole 
series 
Second 
whole 
series 
N 
Mean 
N 
Mean 
N 
Mean 
N 
Mean 
N 
Mean 
N 
Mean 
Egyptian: 
Ashmuni, Ei__ _ 
7 
6.51 
8 
7.04 
7 
3.54 
8 
3.98 
11 
3.48 
14 
3.95 
Zagora, E2 _ 
8 
6.14 
8 
6.82 
8 
3.56 
8 
3.66 
11 
3. 56 
14 
4.04 
Sakel, E3___ 
•7 
6.07 
8 
6.50 
8 
3.50 
8 
3.82 
11 
3.60 
13 
3.94 
Pelion, E4 _ 
7 
6. 86 
8 
6. 95 
8 
4.12 
7 
4. 73 
12 
4.30 
11 
4.82 
Assili, E5_ _ 
8 
6.21 
8 
6.59 
7 
3.16 
7 
4.20 
11 
3.79 
13 
4. 50 
Pima _ _ 
7 
7.44 
8 
7.89 
7 
3.02 
8 
3. 59 
10 
3. 05 
13 
3.53 
£5pa island 
7 
2. 21 
7 
2.09 
7 
2.21 
10 
2.12 
Upland: 
A na.la, _ _ 
7 
2.35 
8 
2.79 
7 
2.35 
10 
2.65 
Meade __ 
8 
4.61 
8 
4. 61 
8 
1.88 
8 
2.32 
8 
1.88 
11 
2.33 
Lone Star- 
7 
1.45 
7 
1.56 
7 
1.45 
11 
1. 58 
