24 TRANSPIRATION IN A DESERT PERENNIAL. 
were placed in the open and brought into the laboratory for weighings. The 
wind velocity was high all the morning, remaining so without apparent 
change until 2 o’clock, when it increased to at least 25 miles an hour. 
TaBLE 6.—Transpiration of potted plant No.1. Experiment VI. Date, April 12, 1911. 
. L Relative 
Time. tT £E E Temperature. humidity. 
oF, p. ct. 
Ch AMMA Me! ceue eee Il demmeat: |} Varnes 72 26 
9 48 a.m. | 0.00897 0.0361 0.248 78 22 
10 47 a.m. 00945 0413 . 228 83.5 20 
11 48 a.m. 00945 0433 -218 84.5 il 
12 48 a.m. -00897 0461 194 89 9 
1 47 am. 00924 -0505 .183 88.5 8 
2 47 a.m. -00908 0508 .178 86 8 
3 48 a.m. 00831 -0472 178 80 9 
25 é : he 
hop -e. 
# Wee, eke ie Pt 
WB 
-10 
.05 
r.00 
P05 7 aia 
04 E Jee 
gee 
03 
-02 
.O1 
00 
T ae TS Se 
008 td Serr aoe ot 
—— 
t.007 
-006 
F.0U5 
r 004 
.003 
.002 
001 ast REN v " " u u 
$ 9 0 Hh wT 8 4 
Fic. 10.—Graph for transpiration of potted plant No. 1. 
Exp. VI. 
