870 
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 
Ribes wolfii Rothrock 
Big Cottonwood Can¬ 
yon. 
Do...... 
Rosa fendleri Crepin 
Big Cottonwood Can¬ 
yon. 
Do... 
Do___ 
Rubus parviflorus Nutt 
Big Cottonwood Can¬ 
yon. 
Do... 
Rubus leucodermis 
Doug 1. 
Big Cottonwood Can¬ 
yon. 
Salix scouleriana Bar- 
ratt 
Big Cottonwood Can¬ 
yon. 
Salix subcaerulea Piper 
Big Cottonwood Can¬ 
yon. 
Sambucus melanocarpa 
A. Gray 
Big Cottonwood Can¬ 
yon. 
Do__ 
Do.. 
Sambucus coerulea Raf 
(= S. glauca Nutt.) 
Big Cottonwood Can¬ 
yon. 
Do.. 
Do.. 
Do... 
Sambucus microbotrys 
Rydb. 
Big Cottonwood Can¬ 
yon. 
Sorbus scopulina 
Greene 
Big Cottonwood Can¬ 
yon. 
Symphoricarpos albus 
(L.) Blake (-5. 
racemosus Michx.) 
Big Cottonwood Can¬ 
yon. 
Symphoricarpos vacci- 
nioides Rydb. 
Big Cottonwood Can¬ 
yon. 
Do.... 
Type 
Aspen-fir. 
Spruce-fir. 
Aspen-fir.. 
.do. 
.do. 
Aspen-fir. 
Spruce-fir. 
Aspen-fir.. 
Aspen-fir. 
Spruce-fir. 
Aspen-fir.. 
Spruce-fir. 
Aspen-fir. 
Aspen-fir. 
_do. 
_do. 
Chaparral. 
Spruce-fir. 
Aspen-fir. 
Aspen-fir. 
Aspen-fir. 
_do_ 
Situation 
Northern aspect. 
Northern aspect, 
(open). 
Northern aspect. 
Southern aspect. 
_do. 
Northern aspect. 
Eastern aspect.. 
Northern aspect. 
Northern aspect 
Northern aspect. 
Northern aspect 
Ridge-top.. 
Northern aspect. 
Southern aspect. 
_do... 
Northern aspect. 
Southern aspect. 
Northern aspect. 
Northern aspect. 
Northern aspect. 
Southern aspect. 
_do. 
Alti¬ 
tude 
Feet 
7,450 
10,000 
7, 500 
7,450 
7,450 
7,450 
9,000 
7,500 
7,500 
8,950 
7,500 
10,000 
7,500 
7,450 
7,450 
7,450 
7, 550 
8,850 
7,500 
7, 500 
7,450 
7,450 
Date of 
collec¬ 
tion 
1920-1921 
July 19 
July 15 
July 13 
July 19 
July 26 
July 12 
Sept. 9 
Sept. 13 
July 13 
Sept. 9 
July 13 
July 15 
Sept. 13 
July 26 
Sept. 7 
Sept. 12 
...do_ 
Sept. 9 
July 13 
July 13 
July 19 
Sept. 7 
Depres¬ 
sion of 
freezing 
point 
Degrees 
c. 
1.27 
1.36 
I. SO 
1.31 
1.48 
1.12 
1.14 
0. 79 
1.61 
1. 46 
1.13 
1.12 
1.05 
1.36 
1.26 
1.28 
1.46 
1.15 
1 . 91 
Os¬ 
motic 
pres¬ 
sure 
Atmos¬ 
pheres 
15.3 
16.4 
15.6 
15.8 
17.8 
13.5 
13.7 
9.5 
19.4 
17.6 
13.6 
13.5 
12.6 
16.4 
15.2 
15.4 
17.6 
13.8 
22.1 
23.0 
1.70 20. 4 
1. 67 | 20. 1 
