the Fruit of Cucurbita . 467 
In Exp. 7 there is rapid loss of weight in the morning, 
diminishing in amount when the blinds are pulled down, 
changing to gain in weight when clouds appear at 3 p.m. 
At about 4 p.m. the blinds were pulled up prematurely, and 
growth fell to zero. As evening came on the gain in weight 
is rapid, but falls again at 9 p.m. 
EXPERIMENT VIII.— Sept. 1 6, 1892. V2. 
Time. 
Reading. 
Rate. 
Temp. C°. 
mm. 
Mgr. per min. 
No sun. 
8.10 a.m. 
240.5 
14.0 
.20 „ 
239-5 
15-0 
.40 „ 
236-5 
+ 44 
16.5 
9.0 „ 
234-5 
+ 33 
i 7-5 
•45 , 
228 
+ 48 
19-3 
Cloudy still. 
Disturbed plant. 
10-15 „ 
229.5 
21-0 
Sun. 
.40 „ 
235 
-73 
21-3 
11.0 „ 
241.5 
— 109 
2I.3 
Sun. 
•55 „ 
25 I -5 
— 60 
23-3 
Sun and cloud. 
-12.30 p.m. 
253-5 
-19 
210 
12.59 » 
257 
-46 
20-0 
Cloud. 
I - 2 9 „ 
254-5 
+ 28 
18-5 
Some rain. 
2.1 „ 
250-5 
+ 44 
18-5 
Cloud. 
•41 >, 
248 
+ 21 
20*8 
Faint sun. 
3-42 „ 
249 
-5 
22.5 
Sun. 
4- 1 3 „ 
249 
21.0 
Sun oblique. 
.46 „ 
248 
20-0 
5-19 „ 
246 
1 8-0 
Sun behind buildings. 
•33 >> 
244-5 
+ 19 
17 
Added weight. 
6.0 „ 
365 
l6-0 
6.30 „ 
364 
14-0 
7.10 „ 
361 
+ 19 
12-5 
8.0 „ 
357 
+ 27 
II-O 
9.0 „ 
35 i 
+ 33 
10-0 
10.0 „ 
343-5 
+ 42 
100 
Exp. 8 is given in Fig. 4. The opposition between the 
weight curve and that of temperature is very distinct. The 
nocturnal fall is absent. 
In Exp. 9 we have loss of weight appearing when the 
shading was prematurely removed at about 4 p.m. The 
afternoon rise is rapid and is followed as usual by a fall. 
