47 ^ Darwin. — On the Growth of 
Exp. 1 6 is given in Fig. 6 ; it shows a general but not an 
exact relationship between the curves of humidity and 
growth. 
EXPERIMENT XVII.— June 21, 1893. V6. 
Time. 
Reading. 
Rate. 
Temp. C°. 
Psychr. 
mm. 
H per min. 
Cloudy. 
6.20 
a.m. 
8 -57 
I 4*4 
99 
7.0 
» 
•68 
+ 2-7 
8.0 
„ 
.81 
+ 2-1 
17.0 
97 
9-5 
„ 
•77 
—0-6 
18.5 
83 
.40 
„ 
• 7 i 
-i -7 
21.7 
70 
•45 
>) 
•60 
New zero. 
10.15 
•62 
+ 0.7 
24.4 
7 1 
Sun. 
•45 
n 
.56 
— 2.0 
26.4 
68 
House watered ; 
blinds down. 
11. 17 
>> 
• 7 1 
+ 4.6 
22.7 
76 
Cloudy. 
•45 
•86 
+ 5*3 
20-2 
80 
Blinds up. 
12.15 
p.m. 
9‘°5 
+ 6.3 
19-2 
81 
.46 
.19 
+ 4-5 
177 
87 
Rain. 
2.45 
„ 
* 2 5 
+ 0.5 
19-0 
85 
Cloudy. 
3 -i 5 
„ 
.29 
+ i -3 
I8.7 
84 
3-45 
„ 
.27 
— 0.6 
20-3 
83 
4 -i 5 
.27 
o-o 
I9.7 
84 
•45 
„ 
.27 
o-o 
19-5 
84 
5-30 
„ 
•35 
+ 1.7 
l8-8 
88 
6.0 
,, 
•43 
2.6 
I 7 , 9 
88 
.30 
•56 
4-3 
17-0 
96 
7.0 
•65 
3-o 
16.4 
98 
•30 
,, 
.72 
2-3 
16.0 
98 
8.0 
„ 
•79 
2-3 
•30 
„ 
•90 
3-6 
15.6 
99 
9.0 
„ 
.98 
2-6 
15-5 
99 
10.0 
10-12 
2-3 
15.0 
100 
Exp. 1 7, which is given in Fig. 7, PI. XXIII, shows a closer 
parallelism of the curves. 
The next and final series was made on a vigorous gourd, 
V7 1 , grown in the propagating pit in which V6 was cultivated. 
I have given it in some detail, because I obtained a continuous 
series of readings for two nights and two days. 
1 On July 12, 1893, the vertical diameter was 113 mm. 
