916 
Journal 0} Agricultural Research voi. xxvii, no. « 
Tabi,E XIV .—Average values of the physicochemical constants for the various plant 
associations 
Habitat. 
Mean 
depres¬ 
sion of 
freezing 
point, 
A. 
Mean 
atmos¬ 
pheres 
osmotic 
concen¬ 
tration, 
P. 
Mean 
specific 
electrical 
conduc¬ 
tivity, 
K. 
Mean 
ratio, con¬ 
ductivity 
to depres¬ 
sion, 
K/A. 
Mean 
chlorid 
per 
liter. 
Cl. 
Stansbury Mountains at higher altitudes 
(Table I): 
Ligneous. 
1.419 
17.06 
O.OI225 
1 
O.OO904 
0.68 
Herbaceous... 
I.094 
I 3 -I 7 
.01726 
.01674 
1.42 
Sagebrush association®: 
Ligneous. 
I.832 
22.01 
.02433 
•01333 
2.65 
Herbaceous. 
I.165 
14.01 
.02132 
.01884 
2.83 
Sagebrush association of the foothills 
canyons (Table II): 
Ligneous. 
I.625 
I9.5O 
-OI 535 
.01005 
0.88 
Herbaceous. 
1.166 
I4.OI 
.02209 1 
.OX988 
3.58 
Washes through sagebrush association 
(Table III): 
Ligneous.. 
2.070 
24.88 
.02704 
.01308 
3 - 3 i 
Herbaceous. 
1-359 
16.33 
.02136 
.01563 
2.76 
Sagebrush association, alluvial fans 
(Table IV): 
Ligneous. 
1.723 
20. 70 
.02552 
.OI459 
2.77 
Herbaceous. 
1.124 
x 3 - 53 
.02073 
.01871 
2.36 
Sand-hill mixed association (Table V): 
Ligneous. 
I- 7 I 3 
20.63 
.02503 
.OI470 
2.90 
Herbaceous. 
I. IOI 
13.24 
.02096 
.OI934 
i -75 
Kochia association (Table VI): 
Ligneous. 
2.255 
27.08 
.03904 
.01853 
7-53 
Herbaceous . 
I * 37 I 
16.49 
.02390 
•01759 
2.71 
Shadscale association: a 
Ligneous. 
1.546 
18.58 
.02836 
.01845 
5.88 
Herbaceous. 
1.207 
14 - 5 1 
.02479 
.02017 
3-57 
Typical shadscale association (Table 
VII): 
Ligneous. 
1.866 
22.40 
.03276 
.01806 
7-43 
Herbaceous. 
1.237 
14.87 
•02523 
.02050 
2.10 
Washes through shadscale association 
(Table VIII): 
Ligneous.. 
1.368 
16.46 
.02592 
.01867 
3-55 
Herbaceous.. 
1 -155 
13.88 
.02377 
'.01940 
4-30 
Greasewood-shadscale association (Table 
IX): 
Ligneous . 
2.674 
31.98 
.04525 
.01792 
18.50 
Herbaceous. 
°-954 
11.50 
.01942 
.02012 
1.70 
Grass-flat communities (Table X): 
Ligneous ... 
2.863 
34-37 
.05843 
.02080 
14.80 
Herbaceous . 
1.963 
23.57 
.04080 
.02153 
12.53 
Salt-flat communities (Table XIII): 
Ligneous . 
3-157 
37-87 
.06247 
.02143 
26.45 
Herbaceous . 
2.880 
34 -60 
.05690 
.02030 
24.30 
o These averages have been obtained by merely combining the totals for the subhabitats given below. 
They have not been recalculated from new species means in the cases in -which the same specks is found 
in two of the subhabitats. 
