868 
Journal of Agricultural Research 
Vol. XXVIII, No 9 
Table VIII .—Freezing point depressions and osmotic pressures of the sap of shrubs 
classified by species, locality, type, situation, altitude, and date of collection —Con. 
[Figures in italics represent averages of two or more determinations] 
Species and locality 
Type 
Situation 
Alti¬ 
tude 
Date of 
collec¬ 
tion 
Depres¬ 
sion of 
freezing 
point 
Os¬ 
motic 
pres- 
. sure 
Sericotheca dumosa 
(Nutt.) Rydb. 
Degrees 
Atmos- 
Feet 
1920-1921 
C. 
pheres 
Big Cottonwood Can- 
Chaparral_ 
Southern aspect_ 
6,400 
July 21 
3.13 
37.5 
yon. 
Do... 
_do_ 
.do__ 
6,400 
Sept. 22 
3. 23 
38.7 
Odostemon repens 
(Lindl.) Cocker. 
Big Cottonwood Can- 
Sagebrush. 
Southern aspect. 
4,500 
July 21 
1.98 
23. 8 
yon. 
Do... 
Chaparral... 
.do.. 
6,400 
..do_ 
2.51 
30.1 
Do. 
Aspen-fir... 
Northern aspert _ _ _ 
7 ,450 
July 23 
1.27 
15.3 
Do... 
Spruce-fir_ 
Ridge-top. _ I_ 
10,000 
July 15 
1. 46 
17.6 
Do.. 
Chaparral.. 
Southern aspect_ 
7,550 
July 19 
1. 76 
21.2 
Do... 
_do.. 
_do_1_ 
7, 550 
Sept. 7 
1.60 
19.2 
Do.. 
.do.... 
... .do... 
7,550 
Sept. 12 
1.65 
19.8 
Do... 
Aspen-fir_ 
Northern aspect 
7 ,450 
Sept. 20 
1.57 
18.9 
Do... 
Chaparral. 
Southern aspect. 
6,400 
Dec. 10 
2.59 
* 31.1 
Ceanothus velutinus 
Dougl. 
Big Cottonwood Can- 
Aspen-fir.. 
Northern aspect .. 
7,450 
July 11 
1.06 
12.8 
yon. 
Do.... 
Chaparral.. 
Southern aspect_ 
7, 550 
July 16 
1. 35 
16.2 
Do__ 
Aspen-fir_ 
Northern aspect 
7'450 
Sept. 20 
1 . 46 
17.6 
Do. 
Chaparral_ 
Southern aspect_ 
7, 550 
Sept. 6 
1.84 
22.1 
Do.. 
Aspen-fir__ 
Northwestern aspect. 
7, 700 
Sept. 9 
0.96 
11.6 
Do.__ 
Chaparral_ 
Southern aspect_ 
6 ,400 
Dec. 10 
3.03 
36.4 
Do. 
.do .... 
_do_ 
7' 550 
Dec. 6 
2. 58 
31.0 
Beaver Creek.. 
_do.. 
_do.. 
7 ,400 
Sept. 16 
2.10 
25.2 
Taylor Canyon_ 
Aspen-fir__ 
Northern aspect_ 
5,200 
Jan. 4 
2.99 
35.9 
Do.I.__ 
Chaparral_ 
Southern aspect. 
5^ 200 
Feb. 28 
2.73 
32.8 
Do. 
Aspen-fir_ 
Northern aspect. 
5 ,200 
...do_ 
2. 47 
29.7 
Pachystima myrsinites 
(Pursh) Raf. 
Big Cottonwood Can- 
Aspen-fir.... 
Northern aspect_ 
7,500 
July 13 
1. 33 
16.0 
yon. 
Do.... 
Chaparral... 
Southern aspect. 
7,550 
July 19 
1. 41 
17.0 
Do.... 
Aspen-fir. __ . 
Northern aspect._ 
7', 450 
Sept. 20 
1.24 
14.9 
Do__ 
_do_ 
Northwestern aspect. 
7' 700 
Sept. 9 
1.16 
14.0 
Do... 
Chaparral_ 
Southern aspect *_ 
7,550 
Sept. 7 
1. 38 
16.6 
Do... 
Aspen-fir_ 
Southern aspect (un- 
7,450 
Sept. 10 
0.66 
8.0 
der shade). 
Do___ 
.do... 
.do__ 
7,450 
Sept. 12 
0.77 
9.3 
Do..*.. 
Spruce-fir_ 
Northern aspect (un- 
8 | 500 
...do_ 
0.57 
6.9 
der shade)*. 
Do.... 
_do.. 
Eastern aspect (open) 
9,000 
Sept. 9 
0.78 
9.4 
Do... 
Chaparral__ 
Southern aspect. 
7,550 
Dec. 6 
2.00 
24.0 
Do.... 
Aspen-fir__ 
Ridge-top. .. 
9' 000 
Dec. 7 
1.94 
23.3 
Beaver Creek.. 
_do_ 
Southern aspect. 
7,400 
Sept. 16 
1. 50 
18.0 
Taylor Canyon_ 
_do.. 
Northern aspect. 
5,200 
Jan. 4 
2.15 
25.8 
Do_*___ 
.do.. 
_do.1. 
5; 200 
Feb. 28 
1. 67 
20.1 
Amelanchier alnifolia 
Nutt. 
Big Cottonwood Can- 
Aspen-fir_ 
Northern aspect_ 
7,450 
July 12 
1. 42 
17.1 
yon. 
Do.... 
Chaparral_ 
Southern aspect. 
7, 550 
July 19 
2.01 
24.2 
Do...... 
_do_ 
_do_ 
7 ,550 
Sept. 6 
1.53 
18.4 
Do.. 
_do.. _ 
_do.. 
7,550 
Sept. 12 
1. 74 
- 20.9 
Do... 
Aspen-fir_ 
Northern aspect_ 
7,450 
...do_ 
1.24 
14.9 
Do.... 
Spruce-fir_ 
Northern* aspect 
8,500 
...do_ 
1.70 
20.4 
(open). 
Cornus stolonifera 
Michx. 
Big Cottonwood Can- 
Aspen-fir_ 
Northern aspect_ 
7,500 
July 13 
1.30 
15.6 
yon. 
