22 
BULLETIN 911, U. S. DEPARTMENT OF AGRICULTURE. 
Table XXV. — Time of cocooning and number of cocoons of the second brood of the 
grape-berry moth, Sandusky, Ohio, 1917 — Continued. 
Dates of collection of larva?. 
Total 
co- 
coons. 
Mean 
dailv 
Date of cocooning. 
Oct. 2 to Nov. 4. 
tem- 
pera- 
ture. 
Sept. 7 
! 1 
6 

3 
1 
1 

6 
10 
8 
9 
7 
14 
29 
26 
37 
20 
78 
72 
48 
119 
123 
88 
80 
42 
50 
134 
93 
99 

82 
61 
16 
15 
26 
36 
2 
177 
144 
55 
121 
124 
100 
6 
7 
8 
6 
6 
2 

32 
10 
46 
1 
3 
13 
58 
! 8 
62 
9 
'"' 
62 
10 
52 
11 
52 
12 
58 
13 
65 
14 
65 
15 
66 
16 
64 
17 
64 
18 
64 
19 
67 
20 
69 
21 
60 
22 
59 
23 
57 
21 
59 
25 
| 
59 
26 
| 
64 
27 
60 
28 
!'" 
58 
29 
60 
30 
52 
Oct. 1 
48 
2 
::::::::::::-:::•::::: 
52 
3 
! 
58 
4 
54 
5 
50 
fi 
44 
7 
50 
8 
45 
9 
43 
10 
1 
45 
11 
45 
12 
1 
i 
i 
40 
13 
38 
15.. . 
1 
1 
4 
1 
2 
1 
55 
16 
50 
17 
1 
2 
49 
18... 
64 
19 
3 
1 
i 
1 
1 
4 
1 
47 
20 
2 
40 
21 
43 
22 
1 
41 
23 
40 
24 
1 
42 
25 

42 
26 
44 
27 
42 
28 
3 
44 
29 
48 
30 
3 
1 
1 
1 
4 
7 
31 
31 
32 
Nov. 5 
3 
46 
10 
50 
Jar discontinued 
Nov. 21 
Nov. 21 
Nov. 21 
Nov. 21 
Nov. 21 
Nov. 21 
2,309 
PERCENTAGE OF COCOONING PREVIOUS TO AND DURING GRAPE 
HARVEST. 
Table XXVI shows the time of cocooning of the larvae that left 
the fruit in the fall of 1917. This does not necessarily indicate, 
however, that all the larvae left the fruit before the end of grape 
harvest, for observation showed that a considerable part of the 
second brood of larvae were only partially grown at the time of harvest 
and that large numbers of larvae actually left the vineyards in the 
fruit. No accurate method of determining what part of the total 
