Mar. 34,1933 
Temperature and Evaporation on Aphis pomi 
983 
Table III .—Relation of evaporation to rate of development of Aphis pomi, igig 
Aphid series No. 
Date of birth. 
Date 
first young 
produced. 
Develop¬ 
mental 
period. 
Total 
evapora¬ 
tion. 
Average 
daily evap¬ 
oration. 
Days . 
Cc . 
Cc . 
Mar. 31 
Apr. 29 
29 
342.5 
11. 8 
Apr. 29 
May 17 
18 
410. O 
22. 8 
3 . 
May 17 
June 2 
16 
294. O 
18. 4 
4 . 
June 2 
17 
15 
336 * 2 
22. 4 
5 .. 
3 
18 
15 
335-5 
22. 4 
4 
18 
14 
203. 6 
14-5 
7 . 
5 
19 
14 
285.9 
20. 4 
8. 
6 
20 
14 
277.8 
19.8 
9 ... 
9 
23 
14 
242.7 
17. 2 
10. 
10 
24 
14 
265.9 
18.9 
12 
25 
13 
260. 7 
20. 0 
13 
24 
II 
217.4 
19. 8 
13 . 
17 
29 
12 
268.8 
22. 4 
14 . 
18 
29 
II 
240. 2 
21. 9 
15 . 
20 
July 1 
II 
243-3 
22.1 
21 
2 
II 
253-5 
23.0 
17 . 
22 
3 
II 
265.7 
24.1 
18...... 
23 
3 
IO 
248. 5 
24. 8 
19. 
24 
5 
II 
288.8 
26. 2 
25 
7 
12 
296.5 
24.7 
26 
8 
12 
304-3 
25-4 
27 
8 
II 
295-5 
26. 9 
23 . 
28 
9 
II 
320.9 
29. 2 
24. 
29 
8 
9 
256.6 
28.5 
25. 
, 3 ° 
10 
IO 
316.0 
31.6 
July 1 
11 
IO 
3 i 3 -o 
31*3 
27.. 
2 
12 
IO 
306.1 
30.6 
28. 
3 
12 
9 
272. 6 
30.3 
29. 
4 
14 
IO 
322.4 
32.2 
30. 
6 
15 
9 
318.0 
35-3 
3 i. 
7 
17 
IO 
368.4 
36.8 
32 . 
8 
19 
11 
405-5 
36.9 
33 . 
9 
18 
9 
3 I 7-9 
35-3 
34 . 
11 
20 
9 
345-9 
38.4 
35 . 
12 
22 
10 
429.0 
42.9 
36. 
13 
22 
9 
392-5 
43-6 
37 . 
14 
21 
7 
286.1 
40.9 
38. 
16 
24 
8 
339-4 
42.4 
39 . 
29 
Aug. 9 
11 
196.9 
17.9 
40. 
30 
10 
11 
222.1 
20. 2 
41. 
3 1 
11 
11 
245.0 
22.3 
42.. 
Aug. 3 
11 
8 
192.9 
24.1 
43 . 
4 
i 7 
13 
382.5 
29.4 
44 . 
7 
i 7 
10 
309-1 
30.9 
45 .. • 
8 
18 
IO 
305-1 
30.5 
46. 
11 
19 
8 
238.0 
29. 8 
47 . 
12 
20 
8 
254- 6 
31.8 
48. 
13 
20 
7 
238.5 
34 .1 
49 . 
14 
23 
9 
304.3 
33-8 
16 
24 
8 
237.2 
29-7 
5 i. 
19 
28 
9 
286.9 
318 
52 .*.. 
20 
30 
IO 
320.1 
32.0 
53 . 
21 
„ 30 
9 
285.9 
3 i *7 
23 
Sept. 2 
IO 
274.0 
27.4 
24 
5 
12 
263.7 
21. 9 
56 . 
25 
7 
13 
23 S -8 
18.1 
26 
7 
12 
207.9 
17-3 
58 . 
27 
9 
13 
193.2 
14. 8 
28 
12 
15 
187. 2 
12.5 
29 
13 
15 
170. I 
11 -3 
