Mar. , 4 , .,,,3 Temperature and Evaporation on Aphis pomi 
973 
m^t r ^ h Q re i C ° r r S ^ f P ^ eci P itation - to writer is indebted to the Depart- 
° f the 0re g° n Agricultural Experiment Station. Obser¬ 
vations on precipitation were made daily at 5.00 p. m. and hence are 
asrfw^'^tv mparablC With 1116 tem P erature and evaporation records 
as given m this paper. 
Table I. Daily evaporation and precipitation, 1gig, at Corvallis, Oreg. 
Date. 
Evap¬ 
ora¬ 
tion. 
Precip 
ita- 
tion. 
Character of 
weather. 
Cc. 
Inches. 
Mar. 31 
22.5 
O 
> 
H 
II .2 
O 
Cloudy. 
2 
do. 
3 
13-0 
do. 
4 
5-7 
• 6 5 
do. 
5 
7.0 
•57 
do. 
6 
8.0 
.04 
do. 
7 
10.3 
0 
Partly cloudy. 
8 
12.7 
0 
do. 
9 
0 
do. 
10 
24.0 
.20 
do. 
11 
.08 
12 
24.0 
0 
13 
13-8 
.12 
do. 
14 
l8.8 
0 
15 
14.9 
0 
16 
*•7 
.12 
Cloudy. 
17 
4.1 
• 7 i 
do. 
18 
6.5 
•47 
do. 
•15 
do. 
20 
18.7 
. 10 
Partly cloudy. 
21 
0 
22 
34-2 
0 
23 
14.9 
0 
24 
12.2 
T. 
do. 
25 
8.4 
.07 
do. 
26 
0 
27 
31.8 
0 
28 
18.4 
0 
29 
26.4 
0 
30 
34-6 
0 
May 1 
19.7 
2 
17.9 
0 
do. 
3 
0 
4 
91.7 
0 
5 
35-6 
0 
6 
39 -i 
0 
7 
26.1 
0 
8 
I 7*7 
0 
do. 
9 
20.2 
0 
do. 
10 
0 
do. 
11 
24.7 
. 11 
do. 
12 
9.1 
. 10 
do. 
J 3 
24.6 
14 
8.8 
•°5 
do. 
15 
7-9 
•05 
Cloudy. 
16 
5-3 
.22 
do. 
17 . 
0 
do. 
18 
21.4 
0.03 
do. 
19 
21.4 
0 
20 1 
31.0 
0 
Date. 
Evap¬ 
ora¬ 
tion. 
■ Precip 
ita- 
tion. 
H Character of 
weather. 
Cc. 
Inches, 
May 21 
O 
22 
49-1 
O 
23 
22.8 
O 
24 
O 
Partly cloudy. 
25 
16.4 
•55 
Cloudy. 
26 
13-3 
0 
Do. 
27 
14.7 
0 
Do. 
28 
18.0 
0 
Do. 
29 
9-3 
•!5 
Partly cloudy. 
30 
16.1 
.06 
Do. 
3 i 
0 
June 1 
61.4 
0 
2 
27.7 
0 
3 
34 -o 
0 
4 
45-6 
0 
5 
3 i -3 
0 
6 
30-3 
0 
7 
0 
8 
58.7 
0 
9 
14.0 
.02 
10 
10.9 
0 
Do. 
11 
J 3-7 
0 
Do. 
12 
12.9 
0 
Do. 
13 
9-5 
.08 
14 
16.3 
0 
Do. 
12.3 
.02 
16 
18.5 
0 
Do. 
17 
28.6 
0 
18 
27.9 
0 
J 9 
23.2 
0 ' 
Do. 
20 
15-4 
0 
Do. 
21 
21.3 
0 
Do. 
22 
17.2 
0 
Do. 
23 
27.2 
0 
24 
29 -4 
0 
25 
30-9 
0 
26 
8.8 
. 10 
27 
21.9 
0 
Do. 
28 
17.0 
0 
Cloudy. 
29 
29-5 
0 
, 30 
24.7 
0 
July 1 
25.6 
0 
.. 2 
33*5 
0 
3 
39 -i 
0 
4 
28.4 
0 
5 
20.2 
0 
Partly clou ly. 
6 
16.9 
0 
Do. 
7 
38.7 
0 
8 
47-3 
0 
9 
41.6 
0 
Do. 
10 
22.0 
0.2 
